National's Power Management Product Portfolio Power Solutions Cat
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2006
National's Power Management Product Portfolio
Power Solutions Category
Voltage Conversion
Linear regulators Switching regulators SIMPLE SWITCHERS® Synchronous Inductorless controllers Isolated solutions High voltage Charge pumps
Voltage Control
MOSFET drivers switches H-bridges* Motor driving motion control* swap
Voltage References
Shunt Serial High precision Digitally stored calibration
Voltage Monitoring
Current gauges Battery charging Reset circuits Programmable supervisory
*Visit power.national.com information these products.
Power Solutions Application
Core Voltage (DSPs/FPGAs/ASICs)
LDOs Switching regulators Switched caps Switching controllers
Analog Signal-Path Power
LDOs Switching regulators
Lighting Management
LMUs* White drivers drivers Inductorless constantcurrent sources
Memory Power
Termination regulators Core regulators
Industrial Telecom
Hot-swap controllers MOSFET drivers controllers Buck/boost switching regulators
Servers, Datacom Networking
IMVP MOSFET drivers switches Multiphase controllers
TFT/Display Power
Boost regulators Gamma buffers Dual regulators
Portable/Battery Applications
Li-Ion battery chargers Switching regulators PMUs** regulators
*LMUs Highly integrated Lighting Management Units **PMUs Highly integrated Power Management Units
Voltage supervisory White/RGB drivers
Abbreviations Wafer
Pack
Abbreviations Temperature Range Commercial (0°C 70°C) Extended commercial (0°C 125°C typ)* Industrial (-40°C 125°C) Military (-55°C 125°C)
product package options voltage options
Temperature ranges this guide operating junction temperature ranges, unless otherwise specified.
*See product datasheets details
Contents
Standard Power Management Functions
Core Power Distributed Voltage Conversion
Switching Converter Solutions
Inductorless Switching Regulators Step-Down (Buck) Single Switching Regulators Internal Switch Step-Up (Boost/Flyback/Sepic) Switching Regulators Internal Switch Dual Switching Regulators Internal Switch Fixed-Gain Inductorless Switched Capacitor Converters Charge Pumps Automatic Step-Up/Step-Down Inductorless Switching Regulators Switching Controllers Step-Down Non-Isolated Topologies External Switch Step-Up (Boost/Flyback/Sepic) Switching Controllers External Switch Controllers Isolated Topologies Medium High Power High-Speed MOSFET Drivers Power Supply Feedback Control/Opto-Coupler Driver Circuits Isolated Switching Power Supplies Dropout Linear Regulators (LDOs) Positive Output 18-22 Dropout Linear Regulators (LDOs) Negative Output Dual Multiple Devices Standard Linear Regulators
Linear Regulators
Supervisory, Protection, Charging, Auxiliary Power Management
PWM-Output Current Gauge Voltage References Voltage Supervisors Battery Charging Solutions Hot-Swap Solutions
Telecom Hot-Swap Controllers Power Distribution Over-Current Protection Switches Load Share Controllers
Application-Specific Functions
Power-over-Ethernet (PoE) Solutions Industrial Telecom High-Voltage (80V/100V) Solutions Memory Solutions Memory Supply Plus Memory Termination
Memory Supply (VDD/VDDQ) Regulators Memory Termination (VTT) Reference (VREF) Regulators
Step-Down Switching Regulators Power Amplifiers Bsaeband Power Amplifier Interface Integrated Power Management Units (PMUs) Lighting Management Solutions
Lighting Management Units (LMUs) White Drivers Inductive White Drivers Inductorless
Automotive LDOs TFT-LCD Power Solutions Notebook PCs, Monitors, Television
Design Tools
Commonly Used Switching Topologies 42-43 Online Design Tools Power Design Resources 44-45
Packaging Solutions .Back Cover
Products
Products
LM2830 LM2831 LM2832 LM2696 LM3100 LM3674 LM25007 LM25010 LM25005 LM2717-Adj LM3370 LM1770 LM2743 LM3075 LM25115 LM5642X LM5106 LM5071 LM5026 LM5080 LP5550 LP3971 LP3917 LP3955 LM3370
Description
Load, Step-down DC-DC regulator 1.5A Load, Step-down DC-DC regulator Load, Step-down DC-DC regulator Constant time buck regulator SIMPLE SWITCHER® synchronous 1.5A, buck regulator MHz, step down DC-DC converter SOT23-5 packaging High voltage, 0.5A step-down switching regulator High voltage, step-down switching regulator High voltage, 2.5A buck regulator Dual step down DC-DC converter
Step-Down (Buck) Single Switching Regulators1 Internal Switch
Dual Switching Regulators Internal Switch
Dual synchronous step-down DC-DC converter with dynamic voltage scaling function voltage SOT-23 synchronous buck controller with external compensation N-Channel synchronous buck regulator controller output voltages High efficiency, synchronous current mode buck controller 42V, Synchronous DC-DC current mode controller High voltage, dual synchronous buck converter with oscillator synchronization 100V Half bridge gate driver with programmable dead time Integrated interface DC-DC converter with input capability Active-clamp current-mode 100V controller with gate driver Modular current sharing controller PowerWise technology compliant energy management unit Power management unit advanced application processors CDMA Cellular phone power management unit CDMA Cellular phone power management system Dual synchronous step-down DC-DC converter with dynamic voltage scaling function Lighting management unit controlling white LEDs main display sets white LEDs keypad controller with integrated half-bridge SyncFET drivers Secondary-side post regulator
Switching Controllers Step-Down Non-Isolated Topologies1 External Switch
High-Speed MOSFET Drivers Power-over-Ethernet (PoE) solutions Industrial Telecom High-Voltage (80V/100V) Solutions
Integrated Power Management Units (PMUs)
Lighting Management Units (LMUs)
LP3958
Controllers Isolated Topologies (Medium High Power)
LM5035 LM25115
Standard Power Management Functions
Switching Converters
Inductorless Switching Regulators
Product
LM2685 LM2686 LM2687 LM2750 LM2751 LM2760 LM2770 LM2787 LM2797 LM2798 LM3352 LM3354 LM3355
1Adjustable 2Custom
VOUT
+5.0 (reg) -5.0 (unreg) Adjustable negative1 4.5, 3.32 1.2/1.5 1.2/1.57 Adjustable negative1 1.82 1.5, 1.8, 2.02 2.5, 3.0, 3.32 1.8, 3.3, 4.1, 5.02 4.12
IOUT (mA)
50/15
(kHz)
1700 1000 1000 1000
(µA)
5000 1000
Other Features/Comments
ripple, independent shutdown pins ripple, shutdown noise, shutdown Excellent thermal properties Driver Short circuit thermal protection Soft-start, sleep-mode, pin-selectable voltage scaling noise, shutdown Fast turn-on time Output-OK battery-OK flags Step-up/step-down multi-gain architecture Step-up/step-down multi-gain architecture Step-up/step-down multi-gain architecture
Temp Range (°C)
Packaging
TSSOP-14, TSSOP-14 LLP-8, MSOP-8, LLP-10, LLP-10 SOT23-5 LLP-10 micro SMD-8 MSOP-10 MSOP-10 TSSOP-16 MSOP-10 MSOP-10
2.85 2.85
output voltage range: -1.5V -5.2V output voltages possible increments. Contact National more information.
LM2770 Typical Application Circuit
2.7V 5.5V
VOUT 1.2V/1.5, 1.2V/1.6 IOUT C1C2+ C2VOUT
LM2770 Efficiency Diagram
LM2770
LM2770
VSEL Sleep
Output Voltage Select Shutdown Mode
Efficiency
COUT
VOUT 1.5V IOUT
Input Voltage
power.national.com
Standard Power Management Functions
Switching Converters
Step-Down (Buck) Single Switching Regulators1 Internal Switch
Product IOUT
LM2770 4.75 4.75 1.2, 1.5, 1.57 1.3, 1.5, 1.05, 1.3, 1.5, 3.6) 1.8, 1.83, 1.87, 1.92 1.2, 1.5, 1.6, 1.8, 1.875, 2.5, and, (0.7 2.5) (down 2.5) 1.05, 1.25, 1.35, 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 (1.5 3.6) 3.3, (1.21 3.3, (1.21 (down 2.5) (down 2.5) 1.2, 1.25, 1.375, 1.5, 1.6, 1.8, 1.875, 2.5, 2.8, 3.3, (1.1 3.3) 1.2, 1.25, 1.375, 1.5, 1.6, 1.8, 1.875, 2.5, 2.8, 3.3, (1.1 3.3) 1000 1000 1000 1000 1000 1000
VOUT Options (Adj Range)
(kHz)
Shutdown
Synchronous Soft-start Rectification
Powergood
Clock Sync
300/400 IOUT
LM2608 LM2612 LM2614 LM2618 LM3670 LM5008
IOUT
LM3661
IOUT
LM2574 LM2574HV LM2594 LM2594HV LM2597 LM2597HV LM2619 LM2671 LM2674 LM5007 LM25007
IOUT
LM3671 LM3674 2000 2000
1Most
these regulators used additional topologies, such inverting, buck-boost, zeta. boards available from different sources, including standard eval boards from National's website store (store.national.com), customized eval boards from WEBENCH (webench.national.com) other special eval boards directly from National's sales representatives. 3Part shutdown pulled ground.
2Evaluation
LM3671 Waveform Output Voltage Ripple
(2V/DIV)
LM3671 Simple Application Circuit
2.7V 5.5V COUT VOUT
Efficiency
(200 mA/DIV)
VOUT Ripple
mV/DIV)
3.6V VOUT 1.5V
IOUT
Time (200 ns/DIV)
WEBENCH Simulation
Eval Board2
Temp Range (°C)
Other Features/Comments
Inductorless converter; sleep power saving mode IOUT Similar LM2612 with addition linear micropower operation mode Pin-selectable modes, VOUT accuracy Pin-selectable modes, VOUT accuracy Similar LM2612 with synchronous rectification mode PWM/PFM modes, 100% duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps Internal startup regulator internal 100V/0.5A N-MOSFET Buck SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator Pin-selectable modes, VOUT accuracy 1.5% Output voltage accuracy, SIMPLE SWITCHER® regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER regulator Internal startup regulator internal 80V/0.7A N-MOSFET Internal startup regulator internal 42V/0.7A N-MOSFET PWM/PFM modes, 100% duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps only mode, 100% duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps
Packaging
LLP-10 micro SMD-10 micro SMD-10 micro SMD-10 micro SMD-10 SOT23-5 MSOP-8, LLP-8 micro SMD-10 SOIC-14, DIP-8, SOIC-14, DIP-8, SOIC-8, DIP-8, SOIC-8, DIP-8, SOIC-8, DIP-8, SOIC-8, DIP-8, TSSOP-14, micro SMD-10 SOIC-8, DIP-8, LLP-16, SOIC-8, DIP-8, LLP-16, MSOP-8, LLP-8 MSOP-8, LLP-8
micro SMD-5, SOT23-5 micro SMD-5, SOT23-5
LM3671 Efficiency Load Current
VOUT 1.8V,
3.0V 3.6V 4.5V
Efficiency
0.01
VOUT 1.8V
0.10 1000
Output Current (mA)
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Standard Power Management Functions
Switching Converters
Step-Down (Buck) Single Switching Regulators1 Internal Switch
Product IOUT
LM2736 LM3578A 4.75 4.75
1Most
VOUT Options (Adj Range)
(1.25 (1.0 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.21 3.3, (1.21 3.3, (1.23 (0.6 4.5) (down 2.5) (down 2.5) 3.3, (2.4 1.8, 2.5, (1.24 (1.24 5.0) (down 0.8V) (0.6 4.5V) (down 0.8V) (1.25 3.3, (1.23 3.3, (1.23 (0.6 4.5V) 3.0, 3.3, 2.5, 1.8, 1.5, 1.2, 3.3, (1.24 (1.225 (1.225
(kHz)
550, 1600, 3000 550, 1600, 3000 1600, 3000 1000 550, 1600 550, 1600, 3000 MHz) 550, 1600, 3000 500, 1500
Shutdown
Synchronous Soft-start Rectification
Internal Internal Internal
Power-good
Clock Sync
IOUT
LM2575 LM2575HV LM2590HV LM2591HV LM2595 LM2598 LM2672 LM2675 LM2734 LM2825 LM2825H LM2830* LM5010A LM25010
1.5A IOUT
LM1572 LM2651 LM2653 LM2738 LM2831* LM3100 LM78S40
IOUT
LM2592HV LM2593HV LM2832* LM2852
2.5A IOUT
LM2655 LM5005 LM25005
*Preliminary
these regulators used additional topologies, such inverting, buck-boost, zeta.
LM5005 Typical Application Circuit
COMP
VOUT
VOUT
RAMP
LM5005
SYNC
WEBENCH Eval Temp Simulation Board2 Range (°C) Other Features/Comments
2Evaluation
Packaging
SOT23-6 SOIC-8, DIP-8, SOIC-24, DIP-16, TO263-5, TO220-5, SOIC-24, DIP-16, TO263-5, TO220-5, TO263-7, TO220-7, TO263-7, TO220-7, TO263-5, TO220-5, TO263-5, TO220-5 SOIC-8, DIP-8, LLP-16, SOIC-8, DIP-8, LLP-16, SOT23-6, LLP-6 DIP-24 DIP-24 SOT23-5, LLP-6 eTSSOP-14, LLP-10 TSSOP-14, LLP-10 TSSOP-16 TSSOP-16, TSSOP-16 LLP-8, eMSOP-8 SOT23-5, LLP-6 eTSSOP-20 DIP-16, TO263-5, TO220-5, TO263-7, TO220-7, LLP-6, eMSOP-8 eTSSOP-14 TSSOP-16, eTSSOP-20 eTSSOP-20
Thermal shutdown, OVP, Internal compensation soft-start industrial temp range, LM2578A grade version available (LM1575), SIMPLE SWITCHER regulator grade version available (LM1575HV), SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER regulator Thermal shutdown, OVP, internal compensation, shutdown current, pulse-by-pulse Totally integrated switching power supply, external components Totally integrated switching power supply, external components Internal compensation compensation required; ultra-fast transient response; thermal shutdown Ultra-fast transient response; thermal shutdown Output voltage accuracy Max. shutdown over full temp. range, typical Max. shutdown over full temp. range, typical VREF Internal compensation SIMPLE SWITCHER synchronous regulator Integrated general purpose 1.5A diode; com, ind, versions available SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator Internal compensation Thermal shutdown, internal compensation, standby current, factory Max. shutdown over full temp. range 1.5% Feedback voltage accuracy, emulated current mode, thermal protection 1.5% Feedback voltage accuracy, emulated current mode, thermal protection
boards available from different sources, including standard eval boards from National's website store (store.national.com), customized eval boards from WEBENCH (webench.national.com) other special eval boards directly from National's sales representatives.
LM3100 Typical Application Circuit
4.5V Soft-start VOUT down 0.8V 1.5A Enable
LM3100
AGND PGND
power.national.com
Standard Power Management Functions
Switching Converters
Step-Down (Buck) Single Switching Regulators1 Internal Switch
Product IOUT
LM2670 LM2673 LM2676 LM2650 LM2596 LM2599 LM2576 LM2576HV LM2696 4.75 4.75 3.3, (1.21 3.3, (1.21 3.3, (1.21 (1.25 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 (down 1.25) 3.3, (1.21 3.3, (1.21 3.3, (1.21
VOUT Options (Adj Range)
(kHz)
Shutdown
Synchronous Soft-start Rectification
Power-good Clock Sync
IOUT
LM2677 LM2678 LM2679
Step-Up (Boost/Flyback/Sepic) Switching Regulators Internal Switch
Product
LM2750 LM2705 LM2751 LM2703 LM2753 LM3500 LM3501 LM2704 LM3578A LM2733X LM2733Y LM2623 LM2698 LM2731X LM2731Y LM78S40 LM2622 LM3310 LM3311 LM5000 LM2623A LM2700 LM3224 LM2621 LM2577 LM2585 LM2586 LM2587 LM2588
VOUT Options (Max)
(3.8 5.2) 4.5, 17.5) 17.5) 3.3, 3.3, 3.3, 3.3,
Switch Current (mA)
IOUT (4.5V) (5V) 1000 1000 1200 1350 1500 1500 1500 1650 2000 2000, 2000 2200 3600 2600 2850 3000 3000 3000 5000 5000
(kHz)
1700 fixed time 725/300/37/9.5 fixed time 1000 1000 fixed time 1600 2000 600, 1250 1600 600, 1300 660, 1280 660, 1280 300, 600, 700, 1250 2000 600, 1250 615, 1250 2000
Enable
Soft-start
Clock Sync
WEBENCH Eval Simulation Board2
Temp Range (°C) Other Features/Comments
Output voltage accuracy, SIMPLE SWITCHER regulator Prog. current limit, output voltage accuracy, SIMPLE SWITCHER regulator Output voltage accuracy, SIMPLE SWITCHER regulator Max. shutdown over full temp. range SIMPLE SWITCHER regulator Error output delay, SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator compensation required, ultra-fast transient response, thermal shutdown Output voltage accuracy, SIMPLE SWITCHER regulator Output voltage accuracy, SIMPLE SWITCHER regulator Prog. current limit, output voltage accuracy, SIMPLE SWITCHER regulator
Packaging
TO263-7, TO220-7, LLP-14, TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14, SOIC-24 TO263-5, TO220-5, TO263-7, TO220-7, TO263-5, TO220-5, TO263-5, TO220-5, eTSSOP-16 TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14
WEBENCH Simulation
Eval Board Other Features/Comments
Inductorless regulated boost converter Current-limited fixed off-time driver Current-limited fixed off-time Flash-LED driver Synchronous rectification, external Schottky diode required Synchronous rectification, external Schottky diode required Current-limited fixed off-time industrial temp. range, LM2578A Current-mode converter Current-mode converter Ratio-adaptive gated oscillator 2.5% output voltage accuracy Current-mode converter Current-mode converter Integrated general purpose 1.5A diode converter amp, Ch+LDO, amp, internal switch, thermal shutdown Ratio-adaptive gated oscillator converter External comp, ceramic caps Constant duty cycle gated oscillator grade version, TO3-4 (LM1577); SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator SIMPLE SWITCHER regulator
Temp Range
-40°C 85°C -40°C 85°C Ind, Ind, Com, Ind,
Packaging
LLP-10, SOT23-5 LLP-10 SOT23-5 LLP-10 micro SMD-8 micro SMD-8 SOT23-5 SOIC-8, DIP-8, SOT23-5 SOT23-5 MSOP-8, LLP-14 MSOP-8 SOT23-5 SOT23-5 DIP-16, MSOP-8, LLP-24 LLP-24 TSSOP-16, LLP-14 MSOP-8, LLP-14 TSSOP-14, LLP-14 MSOP-8 MSOP-8, SOIC-24, DIP-16, TO263-5, TO220-5, TO263-5, TO220-5, TO263-5, TO220-5, TO263-5, TO220-5, TO263-5, TO220-5,
power.national.com
Standard Power Management Functions
Switching Converters
Dual Switching Regulators Internal Switch
Product
LM2716
Description
buck boost regulator single Dual buck Dual buck programmable
Channel Output
3.3V 1.8A (buck) Fixed 2.2A
Channel Output
20V) 3.6A switch (boost) 3.2A 1.8V 3.3V
(kHz)
2000
LM2717 LM3370
Fixed-Gain Inductorless Switched Capacitor Converters Charge Pumps
Product Function Doublers Inverters
LM2660 LM2661 LM2662 LM2663 LM2664 LM2665 LM2681 LM2682 LM2765 LM2766 LM2767 LM2780 LM2781 LM828 LMC7660 MAX660 LM3350 LM3351 Doubler/inverter (2x, -1x) Doubler/inverter (2x, -1x) Doubler/inverter (2x, -1x) Doubler/inverter (2x, -1x) Inverter (-1x) Doubler (2x) Doubler (2x) Divider (0.5x) Doubler/inverter (-2x) Doubler (2x) Doubler (2x) Doubler (2x) Inverts input voltage, ultra-low voltage ripple Inverts input voltage, ultra-low voltage ripple Inverter (-1x) Inverter (-1x) Doubler/inverter (2x, -1x) 3/2x (step-up) 2/3x (step-down) 3/2x (step-up) 2/3x (step-down) 2.50 2.20 2.50 2.20 3.65 5.50 3.65 5.50 (typ) (typ) (typ) (typ) 5/40 10/75 5/40 Frequency select Shutdown Frequency select Shutdown Shutdown Shutdown supply current supply current Shutdown Shutdown supply current flying caps output ripple flying caps output ripple, small solution supply current Frequency adjust Frequency select Shutdown Shutdown MSOP-8, SOIC-8, MSOP-8, SOIC-8, SOIC-8, SOIC-8, SOT23-6, SOT23-6, SOT23-6 MSOP-8, SOIC-8, SOT23-6, SOT23-6, SOT23-5 micro SMD-8 micro SMD-8 SOT23-5, DIP-8, SOIC-8, SOIC-8 MSOP-8, MSOP-8,
ROUT IOUT (mA) (kHz)
Other Features/ Comments
Temp Range (°C)
Packaging
Fractional-Gain
Internal MOSFET RDSON
0.12 boost, 0.16 buck 0.16 PFET 0.4; NFET 0.25
Soft-start
Enable
Other Features/Comments
Individual enable soft-start pins each channel; external compensation versions: Buck1 3.3V Fixed Adj.
Temp Range (°C)
Packaging
TSSOP-24 TSSOP-24 LLP-16
Automatic Step-Up/Step-Down Inductorless Switching Regulators
Product
LM2760 LM3352 LM3354 LM3355
VOUT
3.32 2.5, 3.0, 3.32 1.8, 3.3, 4.1, 5.02 4.12
IOUT (mA)
(kHz)
1000 1000 1000
(µA)
Temp Range (°C)
Packaging
SOT23-5 TSSOP-16 MSOP-10 MSOP-10
LM3370 Application Circuit
2.7V 5.5V VOUT1 0.8V Buck Interface ENABLE Buck (Buck VOUT2 1.8V 3.3V (Buck
ENABLE
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Standard Power Management Functions
Switching Converters
Switching Controllers Step-Down Non-Isolated Topologies1 External Switch
Single Switching Controllers
Product
VOUT Options (Adj Range)
VOUT Accuracy
0.511 ±1.5
IOUT
(kHz)
1400 1000 1000 10,000 2000 2000 2000 2000 2000 1000 1000 1000 200, 1400 1400 300, 1000 1000 1000
Mode
Current Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Current Hysteretic Hysteretic Voltage5 Voltage Voltage/current injection Voltage/current injection Current Current Current Current Current Voltage with feedforward Voltage Current Current Current (2x) voltage (2x)
Shut SoftDown start
Synchronous Rectification
Power Good
LM1770 LM3477/77A LM2636 LM2637/38 LM2639 LM27241 LM27262 LM2727 LM2737 LM2742 LM2743 LM2744 LM2745 LM2746 LM2748 LM3075 LM3475 LM3485 LM3578A LM3743 LM5115
2.95 4.75 4.75 4.65
5.258 5.58 1610 1610 7513 4218
Down Down linear Down 0.8375 1.60 Down Down Down Down Down 0.511 Down 1.3V Down 1.27 Down 0.75 0.75
LM25115
Dual Switching Controllers
LM2633 LM2640 LM2641 LM2642 LM2645 LM2647
0.925 1.25 13.5 Down 32.5 32.5 Down 1.26
2012 2012 2012 2012 2012 2512 2512 2012 2012 40/20/20
200, 200, 200,
4Part 5Unique
LM2657 LM5642 LM5642X LM2648
Triple/Quad Switching Controllers
1Many these controllers used drive additional topologies, such inverting buck-boost, zeta, synchronous flyback. range application range unless otherwise noted. 3Achievable output current using these switching controllers depends different factors, such external transistors (MOSFETs) used, airflow, package, etc. Typically, achievable output currents with good system efficiency range from less than values shown under "IOUT" table above. These calculations made using standard airflow. Larger currents, many times 150% 200% table above "IOUT" values achieved having flow and/or other adequate heat dissipation techniques.
shut down pulled above 1.3V. architecture composed voltage-follower amplifier comparator with both inverting non-inverting inputs available user. 4.5V 5.5V 4.75 5.25V 8Application input voltage dependent upon MOSFET driver used. 4.xxV 5.xxV only IC's range. 9Through external MOSFET drivers used. 10IC 3.0V 6.0V
Lossless Clock Total Eval ISENSE Sync Regulators Board Other Features/Comments
compensation required Hysteretic threshold version) programmed current limit; VOUT 5-bit digital control VOUT linear controllers; 5-bit digital control switching output Multiphase operation phases; 5-bit digital control VOUT Selectable pulse-skip mode high light load efficiency Complies with Intel's VRD10 spec. 6-bit VID. phase operation, soft-stop 0.6V Internal voltage reference; UVLO, 0.6V Internal voltage reference 4.2V UVLO, TRI-STATE® output during minimum time 2.7V UVLO, TRI-STATE output during tracking, precision threshold External VREF version LM2743 ultra-high accuracy; tracking, sequencing. Start into pre-bias loads, Min_ON time Start into pre-bias loads, Min_ON time high accuracy Start into pre-bias loads, Min_ON time User-selectable FPWM SKIP modes, positive negative current limit, UVLO, Fast transient response, high efficiency, wide range, duty cycle capable compensation required. Current limit; P-FET controller pins; 1.0V internal VREF. industrial temp range, LM2578A Tracking Voltage mode/current injection simpifies loop compensation Version LM5115
Temp Range (°C) Packaging
SOT23-5 MSOP-8 TSSOP-20, SOIC-20, SOIC-24, SOIC-24, TSSOP-20 TSSOP-48, LLP-48 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-20 SOT23-5 MSOP-8 SOIC-8, DIP-8, MSOP-10 TSSOP-16, LLP-16 TSSOP-16, LLP-16
Out-of-phase; 5-bit digital control channel; linear controller Individual soft-start allows sequencing; linear output, FPWM Individual soft-start allows sequencing; linear output, FPWM Out-of-phase channels; individual soft-start allows sequencing Out-of-phase channels; linear controller 3.3V output rail PWM/SKIP FPWM modes; soft shutdown, line feedforward, out-of-phase Same LM2647 with lower auto-recover from faults Out-of-phase channels; individual soft-start allows sequencing Out-of-phase channels; individual soft-start allows sequencing Sequential startup, OVP, UVLO, UVP, fault delay. dual-phase channel (interleaved); single-phase channels
TSSOP-48 TSSOP-28 TSSOP-28 TSSOP-28 TSSOP-48 TSSOP-28, LLP-28 TSSOP-28 TSSOP-28 TSSOP-28 TSSOP-56
11Dependant 12Per
upon external voltage reference utilized. channel. Twice this current obtained dual controllers when channels paralleled. 13IC 4.5V
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Standard Power Management Functions
Switching Converters
Step-Up (Boost/Flyback/Sepic) Switching Controllers External Switch
Product
LM3478 LM3488 LM3578A LM5020 LM5021
2.95 2.95
Output Voltage
(kHz)
1000 1000 1000 1000
Shutdown
Soft-start
Clock Sync
WEBENCH Simulation
Eval Board
*The controller will enter low-power state below shutdown threshold 0.45V.
Controllers Isolated Topologies Medium High Power
Product Description
Mode
Current Current Voltage/feedfwd Current Current Current Voltage Current Voltage Current Voltage/currentinjection Voltage/currentinjection
Topologies
Flyback, forward, buck, boost Flyback, forward Forward active clamp Forward active clamp Push-pull, half-, full-bridge Flyback, forward Push-pull, half-, full-bridge Forward active clamp Half-bridge Current voltage push-pull, bridge Synchronous secondary-side post regulator Synchronous secondary-side post regulator
(Max) (kHz)
1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Sync
down Input/output
UVLO I-Limit
Cycle-cycle Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle Cycle-cycle
LM5020 LM5021 LM5025A/B LM5026 LM5030 LM5032 LM5033 LM5034
LM5035 LM5041/A LM5115
LM25115
Single ended AC-DC controller Active clamp Active clamp Alternating outputs Dual interleaved Alternating outputs Dual interleaved active clamp Half-bridge controller gate driver Buck-fed cascade alternating outputs Secondary-side post regulator Secondary-side post regulator
LM5021 Typical Application Circuit
Output
Input
LM5021
COMP
Feedback With Isolation
Other Features/Comments
Temp Range (°C)
Packaging
MSOP-8 MSOP-8 SOIC-8, DIP-8, MSOP-10, LLP-10 MSOP-8, MDIP-8
industrial temp range, LM2578A duty cycle limit (LM5020-1 LM5020-2 respectively); programmable UVLO; slope compensation duty cycle limit (LM5021-1 LM5021-2 respectively); programmable UVLO; slope compensation
Gate Drivers
2.5/0.25
VREF
1.25V 1.25V 0.75V 0.75V 1.7% 0.75V 1.7%
Eval Board Other Features/Comments
duty cycle limit (LM5020-1 LM5020-2 respectively) start-up current; cycle skipping; hiccup current limit datasheets unique features LM5025A, LM5025B High bandwidth opto interface; programmable maximum duty cycle Slope compensation, direct opto-coupler interface Controls dual single interleaved converter Intermediate converter controller Controls dual single interleaved converter SyncFET driver, high bandwidth opto interface, thermal sensor/OVP comparator Programmable deadtime, overlap timing Operates from input Version LM5115
Temp Range (°C)
Packaging
MSOP-10, LLP-10 MSOP-8, MDIP-8 TSSOP-16, LLP-16 TSSOP-16, LLP-16 MSOP-10, LLP-10 TSSOP-16, LLP-16 MSOP-10, LLP-10 TSSOP-20 TSSOP-20, LLP-24 TSSOP-16, LLP-16 TSSOP-16, LLP-16 TSSOP-16, LLP-16
LM5026 Simplified Forward Power Converter with Active Clamp Reset
VOUT 3.3V
LM5026 OUT_A UVLO TIME OUT_B COMP SYNC PGND AGND
Error Isolation
SYNC
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Standard Power Management Functions
Switching Converters
High-Speed MOSFET Drivers
(MOSFET)
Product
LM27222 LM5100 LM5100A LM5101 LM5101A LM5102 LM5104 LM5105 LM5106 LM5107 LM5109A
Range
Peak Gate Drive Sink/Source Current
3.2/4.5 1.8/1.6 3.0/3.0 1.8/1.6 3.0/3.0 1.8/1.6 1.8/1.6 1.8/1.6 1.8/1.2 1.4/1.3 1.0/1.0
Input Type
Single Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Single Single Single Dual, independent Dual, independent
Pulse Width (ns)
Rise/Fall Time (ns)
17/12 10/101 10/101 10/101 10/101 22/15
Bottom/Top Driver Turn Propagation Delay Time (ns)
8/17 25/25 20/20 25/25 25/25 35/35 35/35 25/25 26/26 28/28 30/30
Half-Bridge Gate Drivers Synchronous Buck Topologies (Low-Side High-Side Drivers) High-Voltage, Half-Bridge Gate Drivers Synchronous Buck Bridge Topologies (Low-Side High-Side Drivers)
Product
LM5110-1 LM5110-2 LM5110-3 LM5111-1 LM5111-2 LM5111-3 LM5112
Type
Dual Dual Dual Dual Dual Dual Single
2The
Range
Peak Gate Drive Sink/Source Current
5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 7.0/3.0
Input Type
Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Inverting, non-inverting
Output Gate Driver Type
Compound Compound Compound Compound Compound Compound Compound
Rise/Fall Time (ns)
14/12 14/12 14/12 14/12 14/12 14/12 14/12
Turn On/Turn Propagation Delay Time (ns)
25/25 25/25 25/25 25/25 25/25 25/25 25/25
High-Current, Low-Side Gate Drivers Low-Side Topologies (Such Forward, Push-Pull)
load.
ability hold MOSFET gates with negative voltage reduces losses when driving threshold voltage MOSFETs.
Power Supply Feedback Control/Opto-Coupler Driver Circuits Isolated Switching Power Supplies
Product
LM3411 LM3460
Function
Precision 3.3V 5.0V secondary regulator/driver Precision 1.2V 1.5V secondary regulator/driver*
Output
Current control regulator Current control regulator
Tolerance
Other Features/Comments Temp Range (°C)
Custom voltages available 17V) also used GTL, GTLp voltage control
Packaging
SOT23-5 SOT23-5
*See LM3411 datasheet information using LM3460 power supply feedback control/opto-coupler driver.
UVLO
Internal Gate Chip Bootstrap Enable Enable Diode
Other Features/Comments
Adaptive shoot-through protection, deadtime CMOS input threshold CMOS input threshold, HIP2100 compatible input thresholds inputs input threshold, HIP2101 compatible Independently programmable delay (rising edge) Adaptive deadtime with additional programmable delay input threshold, programmable dead time input threshold, programmable dead time input threshold, ISL6700 compatible input threshold
Temp Range (°C)
Packaging
SOIC-8, LLP-8 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 MSOP-10, LLP-10 SOIC-8, LLP-10 LLP-10 MSOP-10, LLP-10 SOIC-8, LLP-8 SOIC-8, LLP-8
UVLO
3Compound
Negative Drive Capability
Enable
Other Features/Comments
Non-inverting outputs Inverting outputs inverting, non-inverting output Non-inverting outputs Inverting outputs inverting, non-inverting output Inverting non-inverting input single driver
Temp Range (°C)
Packaging
SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8 SOIC-8 SOIC-8 LLP-6
output driver stages include bipolar transistors operating parallel, leveraging unique advantages both, while reducing drive current variation with voltage temperature.
LM510x Typical Application Diagram
+10V 0.22
(Integrated Bootstrap)
100V 0.22
UVLO
Driver
LM50xx Controller Microprocessor
Level Shift
Load
UVLO
Driver
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Standard Power Management Functions
Core Power Distributed Voltage Conversion
Dropout Linear Regulators (LDOs) Positive Output
Output Current
VOUT Product
LP3983 LM4120/A LM4121/A LM4140 LM4132 LP3992 LP2978/A LP2980/A LP2982/A LM2936 LM2936HV
1.21 1.24 15.5 1.24
Other Available Voltages10
2.0, 1.25 1.0, 1.25, 2.0, 2.0, 2.6, 2.7, 2.9, 3.1, 3.2, 3.5, 3.6, 3.8, 4.0, 4.5, 2.6, 3.6, 3.8, 4.0, 4.5, 4.7, 2.6, 2.7, 2.9, 3.1, 3.2, 3.6, 3.8, 4.0, 4.5, 2.2,
VDROPOUT7 (max)
0.21 0.21 0.16 0.15 0.15 0.15 0.45 0.45 0.25 1.14 1.14 0.15
LMS5213 LMS5214 LP2950C/AC LP2951C/AC LP2981/A LM2931/A/C LM3480 LM3490
LP5900
version 1.21V fixed output VBIAS supply 4.5V denotes value full temp range denotes typical value, otherwise values maximum 25°C (typically quiescent current given minimum load) 4Quasi 5See datasheet details part number recommendations 6Those regulators originally designed used with ceramic output caps still stable using ceramic capacitors connected series with small resistor simulate needed 7Dropout voltage given full load. denotes value full temperature range, denotes typical value; otherwise values maximum 25°C 8Denotes products with fixed output voltages that also provide adjustment control output voltage denotes value full temp range 10Please contact National additional voltage options
2Dual-rail,
1Use
VOUT Tolerance9 max3 (mA)
0.2, 0.2, 0.05, 0.1, 0.2, 0.4, 0.5, 0.5, 0.75, 1.25 0.021 0.25 0.25 0.23 0.05 0.125 0.095 0.095 0.015 0.015 0.75 0.13 0.12 0.12 0.095 1.0F 0.05
Shutdown
Error Flag
Ceramic Caps Stable6
Other Features/Comments
quiescent current standby applications
Temp Range
Packaging
micro SMD-5 SOT23-5, SOT23-5, SOIC-8 SOT23-5 SOT23-5 SOT23-5 micro SMD-5, SOT23-5, micro SMD-5, SOT23-5, MSOP-8, SOT223-4, TO252-3, SOIC-8, TO92-3, MSOP-8, SOT223-4, TO252-3, SOIC-8, TO92-3, SC70-5, SC70-5 TO252-3, TO92-3 MSOP-8, MDIP-8, LCC-20, TO5-8, CERDIP-8, SOIC-8, micro SMD-5, SOT23-5, micro SMD-6, MSOP-8, TO220-3, TO263-3/5, TO92-3, SOT23-3, SOT23-5, micro SMD-4, LLP-6
Ultra-low noise; custom voltages available from 0.5V 4.5V
Low-voltage output Low-noise, ceramic output capacitor
noise Reverse polarity protection -15V, transient protection +60V/-50V Reverse polarity protection -15V, transient protection +60V/-50V Active shutdown
Ind,
Reverse polarity protection -15V, transient protection +60V/-50V
bypass capacitor. µVRMS, PSRR kHz, COUT 0.47
LP5900 Circuit Diagram
0.47
LP5900
VOUT 0.47
Output
Bypass Capacitor
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Standard Power Management Functions
Core Power Distributed Voltage Conversion
Dropout Linear Regulators (LDOs) Positive Output
Output Current
VOUT Product
LP2983/83A LP2985/85A/LV LP3984 LP3985 LP3987 LP3988 LP3990 LP3995 LP3999 LM2930 LM330 LM9076
1.24 15.58 1.24 1.24 1.24 1.24 1.25 1.24 1.25 1.25 1.25
Other Available Voltages10
0.9, 1.5, 1.8, 2.0, 2.4, 2.6, 2.7, 2.8, 2.85, 2.9, 3.1, 3.2, 3.5, 3.6, 3.8, 4.0, 4.5, 4.7, 4.8, 5.3, 2.0, 2.9, 2.6, 2.7, 2.85, 2.9, 3.1, 3.2, 4.7, 4.75, 2.6, 2.85 1.85, 2.6, 2.85 0.8, 1.35 1.6, 1.9, 1.6, 1.7, 1.875, 1.9, 2.0, 2.1, 2.2, 2.4, 3.2, 2.7, 2.85, 3.2, 2.7, 2.83, 3.03 2.77, 2.82 2.85, 3.6,
4.75
VDROPOUT7 (max)
0.35 0.12F 0.1F 0.1F 0.15F 0.12 (typ) 0.1F 0.1F 0.23 0.23 0.23 0.575 0.2F 0.22F 0.425 0.335 0.25 0.25
LP8358 LP2986/A LP2987/A LP2988/A LP2952/A LP2953/A/AM LP2954/A LP2956/A LP2957/A LP2992/92A LP3997 LM9070 LM9071
LP3981 LP3982 LP2960/A LP2989/A/LV LM2937 LP8345 LP38691 LP38693
page footnotes
VOUT Tolerance9 max3 (mA)
3.5F 0.75 1.25 0.75 0.095 0.095 0.125F 0.15F 0.12F 0.12F 0.08 0.15F 0.15F 0.025 0.18 0.12 0.12 0.12 0.17 0.17 0.15 0.25 0.20 0.095 0.1F 0.12F 0.27F 0.175 0.100F 0.100F
Shutdown
Error Flag
Ceramic Caps Stable6
Other Features/Comments
Temp Range
Packaging
SOT23-5 micro SMD-5, SOT23-5, micro SMD-4, SOT23-5, micro SMD-5, SOT23-5, micro SMD-5 micro SMD-5, SOT23-5, micro SMD-4, SOT23-5, LLP-6 micro SMD-5, LLP-6 micro SMD-5 TO220-3, TO263-3, TO220-3, TO263-5, MSOP-8 SOT23-5 LLP-8, MSOP-8, SOIC-8 LLP-8, MSOP-8, SOIC-8 LLP-8, MSOP-8, SOIC-8, TSSOP-16, MDIP-14, TSSOP-16, MDIP-16, MSOP-8, TO220-3, TO263-3 TSSOP-16, MDIP-16 TO220-5 LLP-6, SOT23-5 MSOP-8 TSSOP-20, TO220-7 TO220-5, TO263-5 LLP-6, MSOP-8 LLP-8, MSOP-8 SOIC-16 LLP-8, MSOP-8, SOIC-8, SOT223-4, TO220-3, TO263-3,
noise noise, tantalum output capacitor noise, ceramic output capacitor Sleep mode control Power-good flag output Supports COUT noise, fast turn-on time, optimal analog loads Active shutdown; noise, fast turn-on, optimal Reverse polarity protection -6V, transient protection +40V/-12V Reverse polarity protection -12V, transient protection +40V Reverse polarity protection -15V, transient protection +60V delay Programmable time delay, error flag noise Reverse polarity protection -20V Reverse polarity protection -20V, aux. comparator Reverse polarity protection -20V, output MSOP package only Reverse polarity protection -20V, comparator, aux. output Reverse polarity protection -20V noise Delay delay time using capacitor Reverse polarity protection -26V, transient protection +60V/-50V, keep-alive pin, good immunity Reverse polarity protection -26V, transient protection +60V/-50V, good immunity noise noise, adjustable output Reverse polarity protection -20V, aux. comparator Reverse polarity protection -15V, transient protection +60V/-50V Stable with ceramic capacitors, Stable with ceramic capacitors,
Ind, Ind,
Com, LLP-6, TO252-3 TO252-3, LLP-6 SOT223-5, LLP-6
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Standard Power Management Functions
Core Power Distributed Voltage Conversion
Dropout Linear Regulators Positive Output
Output Current
VOUT Product
LP3871 LP3874 LP3881 LP3891 LM1117 LP3878 LP38841 LM2940/40C LM2941/41C LM3940 LMS8117A LP8340 LP38690 LP38692 LP3852 LP3855 LP3872 LP3875 LP3882 LP3892 LP38842 LM1086 LP3853 LP3856 LP3873 LP3876 LP3883 LP3893 LP38843 LM1085 LMS1587 LM1084 LMS1585A LP2975/A LM3460 LM3411
1.215 1.25 13.8 0.56 13.75 1.25 1.25 1.25 1.215 1.215 0.56 1.5V 1.25 23.5 1.215 1.215 1.25 23.5 1.25 5.75 1.25 23.5 1.25 5.75 1.24
Other Available Voltages10
2.85 0.8V 2.85, 3.45
1.32 1.62 2.65 1.05 1.52 1.72 1.12 1.62 2.22
VDROPOUT7 (Max)
0.12 1.34 0.475 0.075 1.254 0.45 0.45 0.28 0.28 0.45 0.45 0.17 0.32 0.115 1.5F4 0.45 0.45 0.27 0.65 0.21 1.5F4 1.34 1.5F4 1.44
1.5A
Controllers
Dropout Linear Regulators (LDOs) Negative Output
Output Current
VOUT Product
LM2990 LM2991
Other Available Voltages10
-5.2, -12,
VDROPOUT7 (Max)
1.0F 1.0F
page footnotes.
VOUT Tolerance9
2.50 2.50
max3 (mA)
0.100F 0.100F 0.24 0.125 0.125
Ceramic Shut- Error Caps down Flag Stable6
Other Features/Comments
Sense Ideal conversion Ideal conversion noise Ideal conversion Reverse polarity protection -15V, transient protection +60V/-50V Reverse polarity protection -15V, transient protection +60V/-50V
Temp Range
Ind, Ind, Ind,
Packaging
SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 TO263-5, TO220-5 TO220-5, TO263-5 PSOP-8, LLP-8 TO263-5, TO220-5, PSOP-8 SOT223-4, TO220-3, TO263-3, LLP-8, CERDIP-16, TSSOP-16, TO220-5, TO263-5, LLP-8, TSSOP-16, CERDIP-16 LLP-8, SOT223-4, TO220-3, TO263-3, CERDIP-16, TSSOP-16 SOT223-4, TO252-3, LLP-6, TO252-3 TO252-3, LLP-6 SOT223-5, LLP-6 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 TO220-5, TO263-5 TO220-5, TO263-5 TO263-5, TO220-5, PSOP-8 LLP-8, TO220-3, TO263-3 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO263-5, TO220-5 TO220-3, TO263-3, TO220-3, TO263-3 TO220-5, TO263-5 TO220-3, TO263-3, SOIC-8, SOT23-5, SOT23-5,
Sense package Stable with ceramic capacitors, Stable with ceramic capacitors, Sense Sense Ideal conversion Ideal conversion Ideal conversion
Sense Sense Ideal conversion Ideal conversion Ideal conversion
User-selected dropout voltage User-selected dropout voltage User-selected dropout voltage
VOUT Tolerance9
Max3 (mA)
Shutdown
Error Flag
Ceramic Caps Stable
Other Features/Comments
Temp Range
Ind, Ind,
Packaging
TO220-3, TO263-3, TSSOP-16, CERDIP-16 TO220-5, TSSOP-16, TO223-5, CERDIP-16,
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Standard Power Management Functions
Core Power Distributed Voltage Conversion
Dual Multiple Devices
Product Type
LP2966 LP2967 LP3986 LM9072 LM9073 LM2984/84C LP3927
IOUT (mA)
150, 150, 150, 350, 700, 500, 100, 200, ,150, 150,
VOUT Accuracy1 Available Voltages2
2%/1.5%F 1.8/1.8, 1.8/3.0, 1.8/3.3, 2.5/2.5, 2.8/2.8, 2.8/3.0, 3.0/3.0, 3.3/2.5, 3.3/3.3, 3.3/3.6, 3.6/3.6, 5.0/5.0 1.8/2.5, 1.8/3.3, 2.5/2.8, 2.5/3.3, 2.6/2.6, 2.8/2.8, 2.8/3.3 1.8/2.5, 1.8/2.8, 2.5/2.5, 2.5/2.8, 2.6/2.6, 2.8/2.8, 2.85/2.85, 2.9/2.9, 3.0/2.8, 3.0/3.0, 3.1/3.1, 3.1/3.3, 3.3/3.3 (2x) Main tracking (2x) (3x) Combinations 1.8, 1.85, 1.9, 2.5, 2.6, 2.7, 2.8, 2.85, 2.9,
VDROPOUT3 (Max)
0.19 0.22 0.1F 0.2F
Dual Dual Dual Dual Dual Triple Five LDOs
denotes value full temp range 2Please contact National additional voltage options 3Dropout voltage given full load. denotes value full temperature range, denotes typical value; otherwise values maximum 25°C
Standard Linear Regulators
Product Positive
LM317L LM340L LM78Lxx LM9074 LM309 LM317HV LM317/317A LM341 LM78Mxx LM317/317A LM340/340A/LM78xx LM309 LM317HV LM317/317A LM350/350A LM323/323A LM338 LM723/723C LM337L LM79Lxx LM337HV LM337 LM79Mxx LM337 LM337HV LM337 LM79xx LM333 (1.25 6.2, 8.2, (1.25 (1.25 (1.25 (1.25 (1.25 (1.25 (1.24 (-1.25 -37) -12, (-1.25V -47) (-1.25V -37) -12, (-1.25V -37) (-1.25V -47) (-1.25V -37) -12, (-1.25 -32) Com, (LM140) Ext, (LM109) Ext, (LM117HV) Ind, (LM117A) Ext, (LM109) Ext, (LM117HV) Ext, (LM117) Ind, (LM150) Ind, Ext, Ext, (LM138) Com, Ext, (LM137HV) Ext, (LM137) Ext, (LM137HV) Ext, (LM137) Ind, (LM133) SOIC-8, TO92-3, micro SMD-6, TO92-3, TO39-3 SOIC-8, TO92-3, micro SMD-6, SOIC-14 TO39-3, TO3-2 TO220-3, TO39-3, TO3-2 TO252-3, TO220-3, SOT223-4, TO263-3, TO39-3, TO3-2, LCC-20, TO220-3, TO220-3, TO252-3, TO39-3, TO220-3, SOT223-4, TO263-3, TO3-2, TO220-3, SOT223-4, TO263-3, TO3-2, TO3-2 TO220-3, TO3-2 TO220-3, TO263-3, TO3-2, TO220-3, TO3-2, TO3-2, TO220-3, TO3-2, DIP-14, TO5-10, LCC-20, SOIC-8, TO92-3, micro SMD-6, SOIC-8, TO92-3, micro SMD-6, TO39-3, TO3-2 TO220-3, SOT223-4, TO39-3, TO3-2, TO220-3, TO220-3, SOT223-4, TO3-2, TO3-2 TO220-3, TO3-2, TO220-3, TO3-2
VOUT
(Max)
Grade
Packaging*
1.5A Controllers
Negative
1.5A
*Additional packages available military grade versions.
Switching Converters
max4 (mA)
0.45 0.34 0.2F 0.2F
Shutdown Error Control Flag
Ceramic Caps Stable5 Other Features/Comments
Keep-alive pin; ideal automotive Watchdog, keep-alive pin, input transient protection Watchdog supervisor. Reverse voltage transient protection. Ideal automotive use. Power up/down sequence noise
Temp Range (°C)
Packaging
MSOP-8 MSOP-8, micro SMD-8, micro SMD-8 TO263-9, TO220-11, TO220-11 LLP-28
denotes value full temp range denotes typical value, otherwise values maximum 25°C (typically quiescent current given minimum load) 5Those regulators originally designed used with ceramic output caps still stable using ceramic capacitors connected series with small resistor simulate needed ESR.
PWM-Output Current Gauge
Sense Current Range*
Product
LM3812-1.0 LM3812-7.0 LM3813-1.0 LM3813-7.0 LM3814-1.0 LM3814-7.0 LM3815-1.0 LM3815-7.0 LM3822-1.0 LM3822-2.0 LM3824-1.0 LM3824-2.0
Accuracy- Including Internal Sense Element Internal Sense Resistance Element
0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.004 0.003 0.003 0.003 0.003
Sensing Type
High side High side side side High side High side side side High side High side High side High side
Sampling Interval (ms)
Supply Voltage
5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25
(µA)
Temp Range (°C) Packaging
SOIC-8 SOIC-8 SOIC-8 SOIC-8 SOIC-8 SOIC-8 SOIC-8 SOIC-8 MSOP-8 MSOP-8 MSOP-8 MSOP-8
*While LM38xx-7.0 will read full scale, rated operation duration more than operation continuously.
Current Gauge Functional Block Diagram
ISENSE
Current Gauge Current Duty Cycle
Sense+ Sense-
Delta- Sigma Converter
Digital Filter
500mA/DIV
Filter+ Filter-
Digital Ramp Generator
Duty Cycle ms/DIV 1V/DIV
Comp
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Standard Power Management Functions
Supervisory, Protection, Charging, Auxiliary Power Management
Voltage References1
Product
LM4040 LM4041 LM4050 LM4051 LM285/385 LMV431 LM4120 LM4121 LM4125 LM4132 LM4140
Type
Shunt Shunt Shunt Shunt Shunt Shunt Series Series Series Series Series
Voltages
2.5, 4.096, 5.0, 8.2, 1.22, (1.24 2.0, 2.5, 4.096, 5.0, 8.2, 1.22, (1.24 1.23, 2.5, (1.24 5.3) 1.24, (1.24 1.8, 2.048, 2.5, 3.0, 3.3, 4.096, 1.25, (1.21 2.0, 2.5, 1.8, 2.048, 2.5, 3.0, 3.3, 4.096 0.52, 0.62, 0.72, 0.752, 0.82, 0.92, 1.0, 1.25, 2.0, 2.5, 4.1, 4.52
Accuracy
0.1, 0.2, 0.5, 0.1, 0.2, 0.5, 0.1, 0.2, 0.1, 0.2, 1.0, 2.0, 2.5, 1.0, 0.2, 0.2, 0.2, 0.05, 0.1, 0.2, 0.4,
TEMPCO (ppm/°C)
Voltage Supervisors
Product Singles
LM3722 LM3723 LM3724 LP3470 LM3700 LM3701 LM3702 LM3703 LM3704 LM3705 LM3706 LM3707 LM3708 LM3709 LM3710 LM3711 LM3712 LM3713 LM8364 LM8365 LM809 MCP809 LM810 MCP810 LMS33460 2.5, 3.3, 2.5, 3.3, 2.5, 3.3, 2.8, 3.1, 3.3, 3.9, 4.3, 4.7, 2.9. 3.1. 3.3, 2.35, 3.1, 2.35, 2.5, 2.8, 3.3, 2.5, 3.3, 2.5, 3.3, 4.8, 2.5, 3.3, 2.2, 3.3, 2.5, 3.0, 3.3, 2.6, 2.8, 3.1, 3.3, 4.3, 4.7, 2.8, 3.1, 3.3, 4.3, 4.7, 2.8, 3.1, 3.3, 4.3, 4.7, 2.8, 3.1, 3.3, 4.3, 4.7, (under over voltage detectors both rails) High (open drain) High High High High High High High (open drain) High High (open drain) (open drain) external cap. 1.4, 200, 16005 1.4, 200, 1.4, 200, 1.4, 200, 1.4, 200, 1.4, 200, 1.4, 200, 1.4, 200, 16005 16005 16005 16005 16005 16005 16005 1.4, 200, 16005 0.65 0.65
Voltage Rails Supervised1
Active Reset
Reset Timeout Period (ms)
(µA)
Manual Reset
Line Output
Comparator
Watchdog4
1.4, 200, 16005 1.4, 200, 16005 1.4, 200, 16005 1.4, 200, 16005 1.4, 200, 16005 external cap. external cap.
Duals
LMC6953
1Most 2Low
parts monitor additional voltage rails 0.5V 2.0V 2.2V 5.0V range. these custom threshold voltages, contact your National sales representative. line output: This early power failure warning indicator goes when supply voltage drops value which higher than reset threshold voltage. 3This additional comparator with 1.225V threshold detector used power fail warning flag monitor second power supply voltage.
VDROPOUT
/IOUT Current
µA/15 µA/15 µA/15 µA/15 µA/20 µA/15 µA/±5 µA/±5 µA/5 µA/20 µA/8
Packaging
SC-70, SOT23-3, TO92-3, SC-70, SOT23-3, TO92-3, SOT23-3, SOT23-3, SOT23-3, SOIC-8, TO92-3, TO46-2, SOT23-5, TO92-3 SOT23-5, SOT23-5, SOT23-5 SOT23-5 SOIC-8
1For extensive list voltage reference parts, please visit website power.national.com 2These other voltages available upon request. Contact your National sales office more information.
Other Features/Comments
Power supply transients immunity Power supply transients immunity Power supply transients immunity Power supply transients immunity Open drain output available upon request. Minimum order apply customized upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized "upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized "upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized "upon request" versions. threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized "upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output available upon request. Minimum order apply customized "upon request" versions. 0.5% threshold accuracy 25°C 0.5% threshold accuracy 25°C Open drain output also available Alternate pinout LM809 Alternate pinout LM810
Temp Range (°C)
Packaging
SOT23-5, SOT23-5, SOT23-5, SOT23-5 micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9, MSOP-10 micro SMD-9, MSOP-10 micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9, MSOP-10 micro SMD-9, MSOP-10 micro SMD-9 micro SMD-9 SOT23-5 SOT23-5 SOT23-3, LLP-6, SOT23-3 SOT23-3, SOT23-3 SC-70 SOIC-8
Ideal supervisor
4Factory 5Factory
programmed watchdog timeout periods 6.2, 102, 1600, 25,600 available. Some these available upon request. programmed options. Some these options available upon request. Please contact your National sales representative more information. 6Watchdog timer dedicated watchdog output (WDO) pin.
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Standard Power Management Functions
Supervisory, Protection, Charging, Auxiliary Power Management
Battery Charging Solutions
Product
LM3655
Description
Charge control protection embedded single-cell Li-Ion/Polymer batteries USB/AC adapter with internal switch, Li-Ion battery charger
Cells/ Range Chemistry
(Wall) 4.35 (USB) cell Li-Ion Li-Polymer cell Li-Ion Li-Polymer
Charge Current
1.4A 1000 (Wall) (USB) (Wall) (USB)
Charge Modes
Precharge, full rate, trickle charge
Integrated Battery Chargers (Internal Pass Transistor)
LM3658
Prequal, top-off, maintenance
LP3947
Single source wall adapter, External FET, I2C-compatible interface programmability
cell Li-Ion
Prequal, maintenance
Battery Charging Controllers (External Pass Transistor)
LM3621 LM3622 LM3620 Full-function charging controller cell Li-Ion battery Charging controller Li-Ion cells SOT-23 charging control building block cell Li-Ion batteries Complete power management unit with integrated Li-Ion battery charger I2C-compatible interface configuration 24.0 30.0 cell Li-Ion cell Li-Ion cell Li-Ion note note note Conditioning, fast, top-off, monitor, maintenance
Battery Charging Subsystems (Multi-Function Charging ICs)
LP3941A
1Charging 2Charging
cell Li-Ion
Prequal, maintenance
input voltage 18V. VCC, 6.3V. input voltage 20V. 4.5V 5.5V. cell NiCd/NiMH supported added external voltage amplifier. 4Charge current dependent upon external pass device used. 5Dependent upon external transistor used. LM3620 drive current LM3621 LM3622 Range 4.5V 12V; operating range (battery connected) 4.5V 3.0V 5.5V
LP3947 Typical Application Circuit
Power Source 4.3V 5.5V CHG-IN BATT VBConac Differential System Supply
ISEL MODE
LP3947
Termination Voltages
4.1, 4.16
Other Features/Comments
Output undervoltage short circuit protection
Temp Range (°C)
Packaging
micro SMD-25
Accepts either adapter power source; includes battery temperature monitoring, mode
LLP-10
4.1,
Accepts either adapter power source; includes battery temperature monitoring, mode, safety timer charge status indicator
LLP-14
4.1, 4.1, 4.2, 8.2. 4.1, 4.2, 8.2.
Analog control, 0.5% tolerance, selectable battery type (coke graphite anode), charge modes plus fault detection; charging status indicators Analog control; 0.7% 1.2% tolerance, low-voltage battery detection, coke, graphite anode versions available Basic VREF, comparator driver suitable linear switching regulator charger designs; 1.2% tolerance
SOIC-16 SOIC-8, SOT23-5
4.1,
Charger with battery backup, linear regulators, programming/configuration interface, comparators, drivers
LLP-48
LP3947 Charging Modes
Battery Voltage Charging Current
Prequalification fast charge transition 4.1V 3.9V Battery voltage Battery current charge current 0.1°C (default) transition 4.1V 4.2V
Time
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Standard Power Management Functions
Supervisory, Protection, Charging, Auxiliary Power Management
Hot-Swap Solutions
Telecom Hot-Swap Controllers
Current Limit Methods Product
LM5068-1 LM5068-2 LM5068-3 LM5068-4
Range
Fault Latch/Retry
Latch-off Auto-retry Latch-off Auto-retry
Power Good Output
Active high Active high Active Active
In-Rush Current
Active/SS Active/SS Active/SS Active/SS
Active Limiting
Fast Comparator
Power Distribution Over-Current Protection Switches*
Product
LM3525-H LM3525-L LM3526-H LM3526-L LM3543-H LM3543-L LM3544-H LM3544-L
Ports/Power Outputs
Single Single Dual Dual Triple Triple Quad Quad
Switch Resistance
0.08 0.08 0.10 0.10 0.09 0.09 0.09 0.09
Continuous IOUT Output)
Shutdown (µA)
Enable Control (Per Output)
Active high Active Active high Active Active high Active Active high Active
*All products compliant with recognized components.
Load Share Controllers
Share Methods Product
LM5080
Range
Remote Sense
Remote Sense
Trim
Feedback
Temp Range (°C)
Packaging
MSOP-8
LM5068 Typical Application Circuit
(GND) TIMER
ENABLE
PWRGD
CLOAD
LM5068
SENSE GATE
LOAD
(-48V)
Comments
Soft-start ramps inrush current during start-up. thresholds programmable with adjustable hysteresis. Soft-start ramps inrush current during start-up. thresholds programmable with adjustable hysteresis. Soft-start ramps inrush current during start-up. thresholds programmable with adjustable hysteresis. Soft-start ramps inrush current during start-up. thresholds programmable with adjustable hysteresis.
Temp Range (°C)
Packaging
MSOP-8 MSOP-8 MSOP-8 MSOP-8
LM3526-H Dual Switch Block Diagram
Fault Flag (Per Output)
Soft-start
Controller
UVLO
Current Limit
Drive
Temp Range (°C)
Packaging
SOIC-8 SOIC-8 SOIC-8, SOIC-8, SOIC-16 FLAG SOIC-16 SOIC-16 SOIC-16
FLAG
Error Detect Shutdown Control
LM3526-H Thermal Shutdown-40 Drive Error Detect Shutdown Control
LM3525-L Peripheral Side Inrush Current-Limit Application Diagram
note
Controller VBUS Cable Peripheral
4.7µF
LM3525-L
Function
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Application-Specific Functions
Power-over-Ethernet (PoE) Solutions
Product Description
LM5020 DC-DC converter
Range
Current Draw Winding (µA)
Reference Reference Accuracy Designs Eval Boards
±2.0
Other Features/ Comments
Error amplifier nonisolated designs; leading edge blanking; high current gate drive Includes LM5020 features plus 80V, line connection switch associated control sequencing fully IEEE 802.3af compliant interface features LM5070 plus auxiliary power interface
Temp Range (°C)
Packaging
MSOP-10, LLP-10
LM5070
Integrated single-chip solution: interface DC-DC converter Integrated single-chip solution: interface DC-DC converter
±2.0
available: highest efficiency simplest implementation
TSSOP-16, LLP-16
LM5071
±2.0
available: single dual outputs
TSSOP-16
*1.5V part signature mode
part classification mode >22V DC-DC converter operational (UVLO release)
LM5071 Simplified Block Diagram
RSIG
+3.3V
SWITCH
Internal High Voltage Regulator
RCLASS UVLO
Bandgap Regulator
UVLORTN
Inrush/DC Current Limit
SMPS Controller
ARTN
COMP
Industrial Telecom High-Voltage (80V/100V) Solutions
Product
LM5000 LM5005 LM5007 LM5008 LM5010A LM5020 LM5021 LM5025/A/B LM5026 LM5030 LM5032 LM5033 LM5034 LM5041/A LM5115
Description
Wide 3.1V input, switch boost flyback Ultra-wide input voltage range 2.5A buck regulator input, step-down with fast transient response 100V input, step-down with fast transient response input, step-down with fast transient response Single-ended 100V current-mode controller AC-DC current mode controller Active-clamp voltage-mode 100V controller with feed-forward gate driver Active-clamp current-mode 100V controller with gate driver 100V Push-pull current-mode controller with synchronization High voltage dual interleaved current mode controller 100V Push-pull voltage-mode controller with synchronization High voltage dual interleaved current mode controller with active clamp 100V input cascaded controller Secondary side post regulator controller Dual drivers 100V synchronous buck bridge topologies 100V Half-bridge power MOSFET drivers Single dual high-current drivers -48V Hot-swap controller with latched fault auto-retry options Modular current-sharing controller Combo interface controller
Eval Board
WEBENCH Enabled
Integrated Switching Regulators
Switching Regulator Controllers
MOSFET Drivers
LM5100/1/2/4 LM5105/07/09 LM5110/11/12 LM5068
Hot-Swap Controller Load Share Controller
LM5080 LM5070/71
Power-over-Ethernet Controller
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Application-Specific Functions
Memory Solutions Memory Supply Plus Memory Termination
Memory Supply (VDD/VDDQ) Regulators
Product
LM2727 LM2737 LM2745 LM27241 LM5115
Range (PVIN)
IOUT
cont. cont. cont. cont. cont.
VOUT (Min)
0.75
30.0
Shutdown
Lossless ISENSE
(DCR)
*Per channel
Memory Termination (VTT) Reference (VREF) Regulators
Product Linear
LP2994 LP2995 LP2996 LP2997 peak, cont. peak, cont. peak, cont. peak, cont. cont. DDR-II DDR-II DDR-II DDR-II
Range (PVIN)
Sink/Source
Standards
External Components
Split Rails*
Shutdown
Switching
LM2744
*Independent power analog rails
Step-Down Switching Regulators Power Amplifiers
Product
LM3200 LM3202 LM3203 LM3204 LM3205
Description
Dynamically adjustable output voltages, inductor, VOUT ripple, noise excellent PSRR Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers
VOUT
(0.8 3.6V) (1.3 3.16) (0.8 3.6) (0.8 3.6) (0.8 3.6)
Baseband Power Amplifier Interface
Product
LP3939
Description
Device interface baseband processor power switch, independent power amplifiers dual band CDMA handset applications
VOUT
(0.8 3.6V)
Power Dissipation
1.38
Prop Delay (ns)
(nA)
Power Good
Temp Range (°C)
Other Features/Comments
Suspend disk shutdown; latch-off Suspend disk shutdown Monotonic start-up, synchronization Pulse-skip mode high light load efficiency SSPR, synchronization
Packaging
TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-20 TSSOP-14
VREF
Thermal Protection
Temp Range (°C)
Other Features/Comments
Suspend shutdown Suspend shutdown Suspend shutdown Suspend shutdown, offset
Packaging
SOIC-8 SOIC-8, LLP-16, PSOP-8 SOIC-8, LLP-16, PSOP-8 SOIC-8, PSOP-8 TSSOP-14
IOUT (mA)
300/500
(kHz)
2000 2000 2000 2000 2000
Bypass Modes
Forced automatic None Forced Forced automatic None
Shutdown
Soft-start
enable enable enable
Synchronous Rectification
PVIN
Eval Board
Temp Grade
VOUT 0.8V 3.6V
Packaging
micro SMD-10 micro SMD-8 micro SMD-10 micro SMD-10
RFOUT
BYPOUT
LM3200
VCON SGND PGND
RFIN
Match
MODULE
Output
micro SMD-8, LLP-10
VREF
LM3200 Block Diagram
PVIN BYPOUT
LM3200 System Power Savings
Percent Savings
RFOUT
LM3200
VCON SGND PGND
VOUT 0.8V 3.6V
RFIN
MODULE
Output Match
VREF
POUT,
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Application-Specific Functions
Integrated Power Management Units (PMUs)
Product
LP3927 LP3941A
Description/Key Functions
Power management unit with linear regs., rail-to-rail open-drain driver LEDs/vibration Charger with battery backup, linear regulators, interface, comparators, drivers control, charging, communications Power management unit application processors, step-down regulators with Dynamic Voltage Management (DVM), drop regulators special RTC) I2C-compatible interface PowerWisePMU, buck, LDOs Power management unit application processors, buck with Dynamic Voltage Management (DVM), LDOs, back battery charger, GPIOs, I2C-compatible interface CDMA with inductive bucks, LDOs, comparators, high speed serial interface transceiver CDMA with linear battery charger, inductive buck, LDOs transceiver Dual buck programmable I2C-compatible
Output Voltage Range
LDO: Stepdown 2.0V; Stepdown 3.3V LDO1: LDO2: LDO3: 1.35 Stepdown 1.2V LDOs: Stepdowns: 3.3V LDO: Stepdown 1.8V fixed Stepdown 2.5V, LDO: (programmable) Stepdown: Stepdown Stepdown 2.3V 3.3V
IOUT (mA)
(LDO) (Stepdown) 100, (LDO) (Stepdown) 150, 300, (LDO) 1500 (Stepdown) 150, 600, Stepdown 150, Stepdown
Output Accuracy
Ambient LDO3% Stepdown
LP3970
LP5550
LP3971
LP3917
Buck, LDO, Charger
LP3955 LM3370
Lighting Management Solutions
Lighting Management Units (LMUs)
Product Description
LP3933 LP3936 LP3931 LP3943 LP3944 LP3950 LP3954 LP3958 LM4970 Lighting management unit controlling white LEDs fun-light LEDs Lighting management unit controlling white LEDs fun-light LEDs Lighting management unit independently controlling LEDs white LEDs white LEDs). interface controller RGB/white/blue LEDs controller RGB/white/blue LEDs Color-LED driver with audio sync Lighting management unit White LEDS, sets LEDs with audio sync flash driver Lighting management unit controlling white LEDs main display sets white LEDs keypad driver with lighting effects synchronized audio
Range
Functions
Boost switching regulator, white LEDs, RGB, interface Boost switching regulator, white LEDs, RGB, ambient light sensor with averaging, I2C/Microwire/SPI interface Boost switching regulator; drivers with programmable color, brightness, turn on/off slopes blinking patterns; FLASH function outputs, each LEDs with programmable on/off, timing brightness control, I2C-compatible interface, GPIO LEDs with programmable on/off, timing brightness control, I2C-compatible interface, GPIO Boost regulator, sets fully controllable with single differential audio input synchronization. Single control available. Boost regulator, white LEDs, sets RGB, flash, temperature light sensors, audio input sync Inductive boost switching regulator, white LEDs, GPIOs, I2C-compatible interface RGB, mono stereo audio input, brightness function audio amplitude, programmable over
DROPOUT
full load full load
Temp Range (°C)
Packaging
LLP-28 LLP-48
LP3971 Typical Application Diagram
LP3971
BUCK 0.8V 3.3V 1600 BUCK 0.8V 3.3V 1600 BUCK 0.8V 3.3V 1600
1.8V 3.0V 1.4V
Applications Processor
VCC_MEM VCC_AUX VCC_APPS (DVM) VCC_SRAM VCC_PLL VCC_BB VCC_USB VCC_IOs
LLP-48
LLP-16
VINLDO5
1.0V 3.3V 1.0V 3.3V
1.1V 1.3V 3.0V 3.0V 3.0V
VINLDO4
1.8V 3.3V 1.8V 3.3V 1.0V 3.3V
LLP-40
(typ)
Microfill Array-49
Backup Battery
Batt
LDO_RTC
2.8V
I/OVtracking
VCC_BATT
PWR_ON
LLP-40 LLP-16
nTEST_JIG SPARE
Control
WAKEUP nBATT_ nRSTO
Interface
nRSTI
Drive Current
Max. white-LED current mA/LED) Max. white-LED current mA/LED) (6x) mA/LED mA/LED total
Current Flash Mode
RGB-outputs, each RGB-outputs, each (6x)
Temp Current Matching Range (°C) Packaging
White with external ballast White with external ballast White with external ballast White 0.2%, CSP-32 CSP-32 LLP-24 LLP-24
LP3958 Typical Application Diagram
IMAX VOUT
CVDD
COUT
Li-Ion Battery Charger
VDD1
CVDDA
VDD2 VDDA VREF IKEY
Main KEY1
Main Backlight mA/LED
CVREF
Backlight mA/LED Strings LEDs KEYPAD
RKEY
VDDIO RSDM?
LP3958
NRST VDDIO
KEY2 KEY3 GPIO(2) GPIO(1)
Microcontroller
LLP-24 Laminate TCSP-32 micro SMD-36 micro SMD-25 LLP-14
CVDDIO
GPIO(0)/PWM
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Application-Specific Functions
White-LED Drivers Inductive
Product
LM2623 LM2623A LM2703 LM2704 LM2705 LM2707 LM2731 LM2733 LM3224 LM3500 LM3501 LM3502 LM3503 LM3519 LM3520 LM3551 LM3552 LM3557
pin.
Range
2Supports
Number LEDs
More than More than More than More than String OLED
VOUT (Max)
18.9 22.2
3Junction
Peak Current (Typ)
1.2A (min) 2.2A (min) 1.5A 2.45A 400, 400, 400, 600, 400, 600, 2.1A 2.1A 0.8A temperature
Fixed off-time Fixed off-time Fixed off-time Fixed duty cycle kHz/1.6 kHz/1.6 kHz/1.25 1.25 1.25 1.25
Ambient Temp Range (°C)
1253 1253 1253
1Through
white LEDs connected series.
more information, list Applications Notes
White-LED Drivers Inductorless
Product
LM2751 LM2753 LM2793 LM2794/95 LM2796
Number Individual Outputs
Voltage regulated Voltage regulated Current regulated Current regulated
ILED (mA)
(kHz)
9.5, 300,
ILED
Brightness Control
Analog Brightness Control
LM27951 LM27952
LM27961
Current regulated
LM27964 LM3570 LM3590 LM3595 LM2750
12.6
Current regulated
1700
Comments
Packaging
SOIC-8 LLP-14 SOIC-8 LLP-14 SOT23-5 SOT23-5 SOT23-5 SOT23-8 SOT23-5 SOT23-5 MSOP-8 micro SMD-8 micro SMD-8 micro SMD-10, LLP-16 micro SMD-10, LLP-16 SOT23-6 LLP-14 LLP-14 LLP-14 LLP-8
LM27964 Typical Application Diagram
Main Display Display Keypad LEDs
POUT
I2C-Compatible Interface DKEY
Programmable oscillator frequency
LM27964
ISETA RSETA ISETB RSETB ISETK RSETK
COUT
Flat panel display power, high current driver Analog input dimming Dual display control Dual display control, analog dimming dimming control LEDs plus OLED subdisplay Flash driver, timeout protection, active enable Flash driver, timeout protection, active high enable 5-LED string
SDIO
LM3551 Typical Application Diagram
COUT LM3551 FET-T FET-F
VBAT
CFTO
Other Features/Comments
1.5x gains Flash driver, continuous load, pulsed load Soft-start, noise Active shutdown (94) active high shutdown (95) LEDs controlled groups: LEDs; soft-start Common cathode current source topology, 0.2% current matching Common anode current sink topology, 0.2% current matching sets: Common cathode current sink topology, Common anode current source topology, sets enables current setting resistors-0.6% current matching both sets outputs pins, pins, pin; common cathode, current sink topology; control I2C-compatible interface constant current outputs plus regulated constant voltage output (4.35V) driving additional LEDs
Ambient Temp Range Packaging
LLP-10 LLP-10 LLP-10 Thin micro SMD-14 Thin micro SMD-18 LLP-14 LLP-14
VSUPPLY
LM3503 Typical Application Diagram
Cntrl
VOUT
Main: LEDs COUT
micro SMD-18
AGND PGND Logic Voltage Signal Inputs
LLP-24 LLP-14 SOT23-5 LLP-10 LLP-10,
Sub: LEDs
Constant voltage source multi-LEDs parallel; noise
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Application-Specific Functions
Automotive LDOs
Output Current
350/80 700/100 250/75 500/100/7.5
VOUT Fixed
3.3, 3.3, 3.3, 3.3, 3.3, 3.3, 2.5, 3.3, 3.3, (2x) main tracking (2x) (3x)
Product
LM2936 LM2936HV LM9036 LM2931/A/C LM2930 LM330 LM9076 LM9070 LM9071 LP2952/A LP2953/A/AM LP2954/A LP2956/A LP2957/A LM2937 LP2960/A LM2940/40C LM2941/41C LM9072 LM9073 LP2956/A LM2984/84C
1.24 1.24 1.24 1.24 1.24 1.24
VOUT Tolerance
0.75 2/1.5F 4.75
Transient VDROPOUT Reverse Polarity Protection Max1 (max) Protection (mA)
+60/-50 +60/-50 +60/-50 +60/-50 +40/-12 +60/-50 +60/-50 +60/-50 +60/-50 +60/-50 +60/-45 +60/-45 +60/-55 1.0F 0.025 0.17 0.17 0.15 0.25 0.20 0.25
Single-Output LDOs
Dual-Output/Tracking LDOs
Triple-Output/Tracking LDOs
denotes value full temp range denotes typical value, otherwise values maximum 25°C. Typically quiescent current given minimum load.
TFT-LCD Power Solutions Notebook PCs, Monitors, Television
Product
LM2622 LM2700 LM2702 LM2710 LM2711 LM2715 LM2716
Range
VOUT (Max)
17.5 17.5 17.5 17.5 3.3, 3.3,
Boost Switch Peak Current
1.65 Fixed buck: 1.8A, boost: 3.6A Buck 2.2A Buck 3.2A 2.45 2.6,
kHz, kHz, 1.25 kHz, 1.25 kHz, 1.25 1.25 kHz, 1.25 kHz, 1.25 kHz, 1.28 kHz, 1.28
Softstart
Integrated Features
VCOM, Gamma buffer time delay power switcher VCOM Gamma buffers Gamma buffers VCOM, Gamma buffer, time delay power switcher 3.3V Output fixed buck adjustable boost Buck 3.3V Buck Gamma buffers amp, LDO, amp,
Temp Range (°C)
Packaging
MSOP-8 TSSOP-14, LLP-14 TSSOP-16 TSSOP-20 TSSOP-20 TSSOP-16 TSSOP-24 TSSOP-24 TSSOP-20 MSOP-8 LLP-24 LLP-24
LM2717 LM3211 LM3224 LM3310 LM3311
Shut- Error down Flag
Ceramic Caps Stable2 Other Features/Comments
Temp Range
Ind, Ind, Ind, Ind, Ind,
Packaging
MSOP-8, SOT223-4, TO252-3, SOIC-8, TO92-3, MSOP-8, SOT223-4, TO252-3, SOIC-8, TO92-3, TO252-3, MSOP-8, SOIC-8 micro SMD-6, MSOP-8, TO220-3, TO263-3/5, TO92-3, TO220-3, TO263-3, TO220-3, TO263-5, MSOP-8 TSSOP-20, TO220-7 TO220-5, TO263-5 TSSOP-16, MDIP-14, TSSOP-16, MDIP-16, MSOP-8, TO220-3, TO263-3 TSSOP-16, MDIP-16 TO220-5 SOT223-4, TO220-3, TO263-3, SOIC-16 SOT223-4, TO220-3, TO263-3, LLP-8, CERDIP-16, TSSOP-16, TO220-5, TO263-5, LLP-8, TSSOP-16, CERDIP-16 TO263-9, TO220-11, TSSOP-16, MDIP-16 TO220-11
Keep-alive pin, good immunity Good immunity Aux. comparator output MSOP package only Aux. comparator, aux. output
Aux. comparator
Keep-alive Watchdog, keep-alive pin, input transient protection Aux. comparator Watchdog supervisor. Reverse voltage, transient protection
2Those
regulators originally designed used with ceramic output caps still stable using ceramic capacitors COUT connected series with small resistor simulate needed ESR.
LM2717 Typical Application Circuit
CBOOT1
LM3311 Typical Application Circuit
CSS1
Fixed 3.3V 1.6A
VOUT1
VOUT Connect
SHDN1
COUT1
2.5V 5.5V
VOUT
FSLCT
Fixed Buck Converter
CSS2
COUT2
Down 1.2V
VOUT2
RFB1
SHDN2
Adjustable Buck Converter
AGND PGND
CBOOT2
SHDN FREQ VFLK VDPM VGHM VOUT LVIN
Output Ceramic
AVIN CIUB
LM3311
PGND
COUT Ceramic
AGND
RFB2
Input Ceramic
LM2717
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Design Tools
Commonly Used Switching Topologies
Buck
ISWITCH IOUT VOUT
Synchronous Buck
ISWITCH ILOAD VOUT
ISWITCH
Function: Step-down (VOUT VIN) When use: Typically when VOUT IOUT 0.5A Characteristics: Easy design good efficiency abovementioned typical VIN/VOUT/IOUT conditions Devices use: buck integrated regulators controllers Comments: multi-output isolation through coupling second inductor shown basic circuit
Function: Step-down (VOUT VIN) When use: When high efficiency required with high-output current duty cycles (VIN VOUT and/or IOUT 0.5A) Characteristics: second switch replaces diode basic buck topology, reducing losses conditions mentioned above Devices use: "synchronous rectification" buck integrated regulator controller
Boost
ISWITCH IOUT VOUT
Flyback
ILOAD VOUT
VOUT
ISWITCH
ILOAD
Function: Step-up (VOUT VIN) When use: Typically used when transformerless, regulated output voltages larger than input voltages output currents beyond required Characteristics: Best low-power conversion 20W) output voltages less than equal input voltage Devices use: boost/flyback regulators controllers Comments: Output current VIN/VOUT switch current
Function: Step-up, step-down, invert buck-boost When use: Typically when multi-output isolation required, when step-up beyond required when max. voltage current switch needs extended order take advantage turns-ratio conversion from transformer Characteristics: Ideal medium-power conversion 100W) Devices use: boost/flyback regulators controllers
SEPIC
ISWITCH
ILOAD VOUT
ISWITCH ILOAD VOUT
SEPIC Single Ended Primary Inductor Converter Function: Buck-boost (VIN max. VOUT min.) When use: Excellent option when buck-boost operation needed transformer desired Characteristics: Lower input ripple than flyback, snubber circuitry required Devices use: boost/flyback regulator controller Comments: Also useful replacing boost circuits when true shutdown required
Function: Inverting (VOUT negative; positive) When use: When regulated, negative, low-ripple voltage needed from positive supply Characteristics: Continuous current input output translates into very low-ripple/very low-noise design Devices use: boost/flyback regulator this easiest with parts that have negative input Comments: isolation when transformer added
Inverting
ISWITCH ILOAD VOUT
Single Inductor Buck Boost
ISWITCH ILOAD VOUT
Function: Inverting (negative output from positive input, -VOUT greater than less than VIN) When use: When inverted, regulated output needed. This topology commonly used output currents from approximately Characteristics: Easy implement, single output Devices use: buck integrated regulator controller (see National's Note AN-1157 implementing with SIMPLE SWITCHER® buck regulator) Comments: Alternatives voltage inversion include topologies (low noise) switched capacitor converters where IOUT less than inductor needed)
Function: Step-up step-down When use: This topology alternative sepic flyback topologies when automatic step-up/step-down functionality needed, transformer second inductor required Characteristics: second switch output diode added, resulting effective overlapped boost topology basic buck topology. desired, synchronous rectification implemented increased efficiency (both diodes replaced FETs). Devices use: integrated buck regulator controller, including SIMPLE SWITCHER buck regulators Comments: sure watch voltage applied gate second which will VIN. high selected specifications, voltage limiting circuitry.
Push-Pull
ILOAD VOUT
Current-Fed Push-Pull (Cascaded)
ILOAD
VOUT
Function: Isolated step-down, step-up buck-boost multiple outputs When use: When isolated, medium-to-high power conversion needed 1000 This topology also used when input voltage range very wide when VIN/VOUT ratio step-down applications requires very small duty cycle (and thus might yield poor regulation) standard buck topology used. Devices use: LM5030 current-mode push-pull controller Comments: peak current voltage stress switches given max., 1.56 POUT/VIN min.
Function: Isolated step-down, step-up, buck-boost topologies. tightly regulated multiple outputs. When use: When isolated medium- high-power conversion needed, reduced losses, high efficiency, output inductor also desired. Characteristics: current-fed cascaded topology consists buck regulation stage followed push-pull isolation stage. Because buck stage feeds continuous current push-pull stage, output inductor required. Devices use: LM5041 current-mode cascaded controller Comments: increase conversion efficiency, synchronous rectification recommended, both current-fed buck stage push-pull output stage (self-driven synchronous rectification)
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MSOP (Mini 8-lead)
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(Small outline molded/ceramic)
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