200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator

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200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator

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19-4816; 7/09
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
MAX16910 ultra-low quiescent current, high-voltage linear regulator ideal automotive batteryoperated systems. device operates from +3.5V +30V input voltage, delivers 200mA load current, consumes only 20µA quiescent current load. device consumes only 1.6µA current when shutdown. input +45V transient tolerant designed operate under load-dump conditions. MAX16910 configured either fixed output voltage (+3.3V +5V) adjustable output voltage using external resistive divider. MAX16910 features open-drain, active-low RESET output with fixed thresholds offered 92.5% 87.5% output voltage. RESET output remains fixed period 60µs after output voltage exceeds threshold. RESET delay extended with external capacitor. MAX16910 includes enable input, short-circuit protection, thermal shutdown. MAX16910 operates over -40°C +125°C automotive temperature range. device available space-saving, thermally enhanced, 3mm, 8-pin TDFN package 4mm, 8-pin package.
20µA Quiescent Current +3.5V +30V Wide Input Voltage Range, +45V
Features
Tolerant
Operates Through Cold-Crank Conditions Low-Dropout Voltage 280mV 200mA 200mA Output Current Capability Stable Operation with Tiny 4.7µF Output Capacitor User-Selectable Output Voltage
MAX16910
+3.3V Fixed +1.5V +11V Adjustable with External Resistive Divider
Open-Drain RESET Output with Adjustable Delay Fixed-Reset Threshold Options: 87.5% 92.5% High-Voltage Enable Input (+45V) Thermal Short-Circuit Protection Operating -40°C +125°C Temperature Range Automotive Qualified
Applications
Automotive Industrial Telecom
PART MAX16910CATA_/V+ MAX16910CASA_/V+
Ordering Information
IOUT
(mA)
TEMP RANGE -40NC +125NC -40NC +125NC
PINPACKAGE TDFN-EP* (3mm 3mm) SO-EP* (5mm 4mm)
Typical Operating Circuits
FIXED OUTPUT ENABLE BATTERY SETOV 4.7µF 10kI RESET
Insert desired suffix numbers (from Selector Guide) into blank indicate reset threshold. +Denotes lead(Pb)-free/RoHS-compliant package. Denotes automotive qualified part. Exposed pad.
MAX16910 RESET TIMEOUT (1.25ms DELAY)
Typical Operating Circuits continued next page.
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim Direct 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
Typical Operating Circuits (continued)
3.3V FIXED OUTPUT ENABLE BATTERY MAX16910 SETOV TIMEOUT (1.25ms DELAY) RESET 4.7µF 10kI RESET
ADJUSTABLE OUTPUT ENABLE BATTERY TIMEOUT MAX16910 SETOV 4.7µF 10kI RESET RESET
(1.25ms DELAY)
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
Configurations
MAX16910
TIMEOUT
VIEW
SETOV
VIEW
ENABLE
MAX16910
SETOV TIMEOUT
MAX16910
ENABLE RESET
RESET
*CONNECT EXPOSED GND.
TDFN
*CONNECT EXPOSED GND.
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced GND.) ENABLE, SET. -0.3V +45V OUT, RESET (open-drain output).-0.3V +12V SETOV, TIMEOUT.-0.3V Maximum Current (all pins except OUT).50mA Continuous Power Dissipation +70°C) 8-Pin TDFN (derate 24.4mW/°C above +70°C)*.1951mW 8-Pin (derate 23.3mW/°C above +70°C)*.1861mW Junction-to-Case Thermal Resistance (JC) (Note 8-Pin TDFN.8°C/W 8-Pin SO.7°C/W Junction-to-Ambient Thermal Resistance (JA) (Note 8-Pin TDFN.41°C/W 8-Pin SO.43°C/W Operating Temperature Range.-40°C +125°C Junction Temperature.+150°C Storage Temperature Range.-65°C +150°C Lead Temperature (soldering, 10s).+300°C
JEDEC51 Standard (multilayer board). Note Package thermal resistances were obtained using method described JEDEC specification JESD51-7, using four-layer board. detailed information package thermal considerations, refer
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN VENABLE +14V, CTIMEOUT open, 1µF, COUT 4.7µF, unless otherwise noted. -40°C +125°C, unless otherwise noted. Typical values +25°C.) (Note PARAMETER Supply Voltage Range Supply Current Shutdown Supply Current Output Voltage Fixed Output Setting) Output Voltage (3.3V Fixed Output Setting) Adjustable Output-Voltage Range SETOV Voltage Dropout Voltage (Note Short-Circuit Output Current Limit Thermal Shutdown ISHDN VOUT50 VOUT33 VOUT VSETOV DVDO ILOAD ILOAD 200mA, GND, SETOV HIGH, VOUT(NORM) +5.0V Output shorted (MAX16910C_) (Note SYMBOL Continuous 400ms ILOAD GND, VOUT ENABLE GND, +25NC ENABLE GND, -40NC +125NC ILOAD 200mA, (Note ILOAD 200mA, 4.8V (Note 3.234 1.225 1.25 +180 3.366 11.0 1.275 CONDITIONS UNITS
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VIN VENABLE +14V, CTIMEOUT open, 1µF, COUT 4.7µF, unless otherwise noted. -40°C +125°C, unless otherwise noted. Typical values +25°C.) (Note PARAMETER Thermal Shutdown Hysteresis Line Regulation Fixed Output Setting) Line Regulation (3.3V Fixed Output Setting) Load Regulation Fixed Output Setting) Load Regulation (3.3V Fixed Output Setting) Power-Supply Rejection Ratio Startup Response Time TIMEOUT INPUT TIMEOUT Ramp Current TIMEOUT Ramp Delay RESET Default Timeout Period RESET OUTPUT RESET Threshold RESET Threshold Hysteresis RESET Delay RESET Output-Voltage (Open-Drain) RESET Open-Drain Leakage Current RESET Open-Drain Leakage Current ENABLE ENABLE Logic-Low ENABLE Logic-High ENABLE Pulldown Current INPUT Input Current (All Modes) Logic-Low Logic-High VILSET VIHSET +25NC +125NC (Note 0.65 MAX16910_9/V+, VOUT falling MAX16910_8/V+, VOUT falling VOUT rising VOUT falling (Note ISINK 0.5mA, RESET asserted RESET asserted, RESET +25NC RESET asserted, RESET -40NC +125NC 0.03 92.5 87.5 VOUT VOUT VOUT rising, TIMEOUT OPEN TIMEOUT connected 0.600 1.25 1.650 ms/nF PSRR tSTART SYMBOL (Note 30V, ILOAD 4.8V 30V, ILOAD ILOAD 200mA ILOAD 200mA ILOAD 10mA, 100Hz, 500mVP-P (Note Rising edge VOUT, ILOAD 50mA (Note CONDITIONS UNITS
MAX16910
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
ELECTRICAL CHARACTERISTICS (continued)
(VIN VENABLE +14V, CTIMEOUT open, 1µF, COUT 4.7µF, unless otherwise noted. -40°C +125°C, unless otherwise noted. Typical values +25°C.) (Note PARAMETER SETOV INPUT (TRI-MODE) SETOV Input Leakage Current SETOV Low-Level Input Voltage SETOV High-Level Input Voltage Note Note Note Note Note VILSETOV VIHSETOV SYMBOL CONDITIONS HIGH, VSETOV GND, VSETOV GND, VSETOV VILSETOV places device +3.3V fixed output-voltage mode GND, VSETOV VIHSETOV places device fixed output-voltage mode VOUT UNITS
Production tested +25°C. Overtemperature limits guaranteed design. Observe absolute maximum power dissipation limits. Dropout voltage defined (VIN VOUT) when VOUT below value VOUT VOUT production tested. ENABLE internally pulled GND.
Typical Operating Characteristics
(VIN +14V, 1µF, COUT 4.7µF ceramic, +25°C, unless otherwise noted.)
SUPPLY CURRENT SUPPLY VOLTAGE
MAX16910 toc01
GROUND CURRENT LOAD CURRENT
MAX16910 toc02
SHUTDOWN SUPPLY CURRENT SUPPLY VOLTAGE
MAX16910 toc03
ILOAD
VOUT 3.3V -40NC IGND(FA) +125NC +25NC
(FA)
IIN(FA)
ILOAD (mA)
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
Typical Operating Characteristics (continued)
(VIN +14V, 1µF, COUT 4.7µF ceramic, +25°C, unless otherwise noted.)
SHUTDOWN SUPPLY CURRENT TEMPERATURE
MAX16910 toc04
MAX16910
RESET THRESHOLD TEMPERATURE
MAX16910 toc05
DROPOUT VOLTAGE LOAD CURRENT OUTPUT)
0.45 0.40
DROPOUT VOLTAGE
VOUT RESET THRESHOLD VOLTAGE MAX16910_8/V RISING MAX16910_8/V FALLING MAX16910_9/V RISING MAX16910_9/V FALLING
+150NC +125NC +25NC -40NC
0.35 0.30 0.25 0.20 0.15 0.10 0.05 LOAD CURRENT (mA)
(FA)
TEMPERATURE (NC)
TEMPERATURE (NC)
DROPOUT VOLTAGE LOAD CURRENT (3.3V OUTPUT)
MAX16910 toc07
OUTPUT VOLTAGE SUPPLY VOLTAGE
MAX16910 toc08
OUTPUT VOLTAGE SUPPLY VOLTAGE
VOUT ILOAD SETOV
MAX16910 toc09
0.50 0.45 0.40 DROPOUT VOLTAGE 0.35 0.30 0.25 0.20 0.15 0.10 0.05 -40NC
+150NC +125NC +25NC
VOUT ILOAD SETOV
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs.TEMPERATURE
MAX16910 toc10
RESET TIMEOUT PERIOD TEMPERATURE
MAX16910 toc11
POWER-SUPPLY REJECTION RATIO FREQUENCY
PSRR (dB) 0.01 1000 FREQUENCY (kHz) ILOAD 10mA 0.5VP-P
MAX16910 toc12
5.05 ILOAD 64mA 5.03 5.01 4.99 4.97 4.95
TIMEOUT PERIOD (Fs) CTIMEOUT UNCONNECTED
VOUT
TEMPERATURE (NC)
TEMPERATURE (NC)
MAX16910 toc06
0.50
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
Typical Operating Characteristics (continued)
(VIN +14V, 1µF, COUT 4.7µF ceramic, +25°C, unless otherwise noted.)
RESET OUTPUT VOLTAGE SINK CURRENT
MAX16910 toc13
RESET TIMEOUT PERIOD TIMEOUT CAPACITANCE
MAX16910 toc14
LOAD-TRANSIENT RESPONSE OUTPUT)
0.001
1000
MAX16910 toc15
RESET OUTPUT VOLTAGE
TIMEOUT PERIOD (ms)
VOUT (AC-COUPLED) 100mV/div 180mA
IOUT 10mA
0.01 0.01 CTIMEOUT (nF) 200Fs/div RESET SINK CURRENT (mA)
LOAD-TRANSIENT RESPONSE OUTPUT)
MAX16910 toc16
LINE-TRANSIENT RESPONSE OUTPUT)
MAX16910 toc17
LINE-TRANSIENT RESPONSE (3.3V OUTPUT)
MAX16910 toc18
VOUT (AC-COUPLED) 100mV/div 180mA IOUT 10mA
VOUT (AC-COUPLED) 200mV/div
VOUT (AC-COUPLED) 200mV/div 4.8V
200Fs/div
2ms/div
2ms/div
POWER-UP RESPONSE
MAX16910 toc19
POWER-UP RESPONSE
MAX16910 toc20
IOUT
3.3V VOUT 3.3V VOUT 170mA IOUT IOUT 170mA 40Fs/div
40Fs/div
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
Typical Operating Characteristics (continued)
(VIN +14V, 1µF, COUT 4.7µF ceramic, +25°C, unless otherwise noted.)
MAX16910
ENABLE STARTUP RESPONSE
MAX16910 toc21
ENABLE STARTUP RESPONSE
MAX16910 toc22
LOAD-DUMP TRANSIENT RESPONSE
MAX16910 toc23
3.3V VOUT
3.3V VOUT 175mA IOUT
VOUT (AC-COUPLED) 100mV/div
40Fs/div
40Fs/div
100ms/div
Description
NAME ENABLE FUNCTION Regulator Input. Bypass with (min) low-ESR ceramic capacitor. Active-High Enable Input. Force ENABLE high connect turn regulator Pull ENABLE leave unconnected) place device low-power shutdown mode. ENABLE internally pulled down through 0.65FA current sink. Feedback Network Selector. Connect when operating MAX16910 fixed outputvoltage mode (3.3V using internal feedback network. Connect voltage higher than 2.4V when external feedback network (resistive divider) used, operating MAX16910 adjustable output-voltage mode. Active-Low, Open-Drain Reset Output. RESET asserts when below reset threshold, remains duration reset timeout period after reset conditions end. RESET also asserts when ENABLE during thermal shutdown. Reset-Timeout-Period Adjust Input. Internal capacitance produces 60Fs default delay when TIMEOUT left unconnected. Connect capacitor from TIMEOUT longer timeout period than default. Regulated Output-Voltage Selector. Connect SETOV fixed output, connect SETOV 3.3V fixed output. SETOV becomes feedback path when using external resistive divider adjustable output. Ground Regulator Output. Bypass with minimum 4.7FF. low-ESR, ceramic capacitor (X7R, X5R) optimal performance. SETOV input controls output voltage when fixed +3.3V fixed output-voltage mode. Using external resistive divider between SETOV sets adjustable output voltage from +1.5V +11V. Exposed Pad. internally connected GND. Connect ground plane provide thermal-resistance path from thermal junction PCB. only electrical connection GND.
RESET
TIMEOUT
SETOV
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
Functional Diagram
ENABLE
CONTROL LOGIC
OVERCURRENT PROTECTION THERMAL PROTECTION OUTPUTVOLTAGE SELECT RESET TIMEOUT SETOV RESET TIMEOUT
1.253V 1.156V (92.5%) 1.094V (87.5%)
MAX16910
_Detailed Description
MAX16910 low-quiescent current, high-voltage linear regulator ideal automotive batteryoperated systems. device operates from input voltage +3.5V +30V, delivers 200mA load current, consumes only 20µA quiescent current load. input +45V tolerant designed operate under load-dump conditions. MAX16910 user configured either fixed output voltage (+3.3V +5V) adjustable output voltage using external resistive divider. MAX16910 features open-drain, active-low RESET output with fixed thresholds offered 92.5% 87.5% output voltage. RESET output remains fixed period 60µs after output voltage exceeds threshold. RESET delay extended with external capacitor. MAX16910 includes enable input short-circuit protection thermal shutdown.
SETOV inputs determine output mode. fixed output-voltage mode (see fixed output circuit Typical Operating Circuits), connect SETOV OUT. 3.3V fixed output-voltage mode (see 3.3V fixed output circuit Typical Operating Circuits) connect SETOV GND.
Fixed Output-Voltage Mode
adjustable output-voltage mode (see adjustable output circuit Typical Operating Circuits), connect voltage 2.4V connect SETOV resistive divider between GND. output voltage between 1.5V selected using following equation: VOUT VSETOV R1/R2) where VSETOV 1.25V should less than equal 100k.
Adjustable Output-Voltage Mode
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
ENABLE active-high, logic-level enable input that turns device off. Drive ENABLE high turn device internal 0.65µA pulldown current keeps MAX16910 shutdown mode when driven three-state driver high-impedance mode, open-drain driver. When shutdown, MAX16910 consumes only 1.6µA. ENABLE withstands voltages 45V, allowing driven high-input level voltages connected always-on operation. MAX16910 features thermal protection. When junction temperature exceeds +180°C, internal thermal sensor turns pass transistor, allows device cool. thermal sensor turns pass transistor again after junction temperature cools 25°C. This results cycled output during continuous thermal-overload conditions. Thermal protection protects MAX16910 event fault conditions. continuous operation, exceed absolute maximum junction temperature rating +150°C. MAX16910 features 330mA current limit. output shorted continuously without damage device. During short circuit, power dissipated across pass transistor quickly heat device. When temperature reaches +180°C, MAX16910 turns pass transistor automatically restarts after temperature cooled 25°C. MAX16910 features active-low, open-drain reset output. Once monitored output voltage exceeds reset threshold voltage, RESET remains reset timeout period then goes high. RESET changes from high whenever monitored output voltage drops below reset threshold voltage. RESET also asserts when ENABLE during thermal shutdown. MAX16910 features reset timeout period adjustable input. internal capacitance produces 60µs default delay when TIMEOUT left unconnected. Connect capacitor from TIMEOUT higher timeout period than default. following formula determine reset timeout capacitor: CTIMEOUT TTIMEOUT
ENABLE
where CTIMEOUT TTIMEOUT example, 1µA, CTIMEOUT needs 10ms delay.
MAX16910
_Applications Information
Output-Capacitor Selection Regulator Stability
Thermal Protection
stable operation over full temperature range, with fixed 3.3V 5.0V output voltages, low-ESR 4.7µF capacitor. resistor-programmed output voltages, 10µF low-ESR ceramic capacitor recommended stable operation. larger output-capacitor values such 22µF reduce noise, improve load-transient response power-supply rejection. Some ceramic dielectrics exhibit large capacitance variations with temperature. improve power-supply rejection transient response, capacitor larger than minimum capacitor between GND. MAX16910 provides 200mA continuous output current. input voltage range extends 30V. Package power dissipation limits amount output current available given input/output voltage ambient temperature. Figure shows maximum allowable power dissipation these devices keep junction temperature below +150°C. Figure assumes that exposed metal MAX16910 soldered 1in2 multilayer copper board. Figure determine allowable package dissipation given ambient temperature. Alternately, following formulas calculate allowable power dissipation TDFN-EP package:
1.951W +70°C 1.951W 0.0244 70°C) 70°C +125°C
Available Output-Current Calculation
Output Short-Circuit Current Limit
RESET Output
Timeout
SO-EP package:
1.861W +70°C 1.861W 0.0233 70°C) 70°C +125°C
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator MAX16910
After determining allowable power dissipation, calculate maximum allowable output current, without exceeding +150°C junction temperature, using following formula: reset timeout period adjustable accommodate variety microprocessor applications. Adjust reset timeout period connecting capacitor between TIMEOUT GND.
Selecting Timeout Capacitor
IOUT(MAX)
VOUT
above equations include negligible power dissipation from self-heating device ground current. Example (TDFN-EP Package): +125°C, 16V, VOUT 3.3V Calculate maximum allowable power dissipation given temperature follows:
1.25 TIMEOUT
where CTIMEOUT Leave TIMEOUT unconnected select internally fixed timeout period. CTIMEOUT must low-leakage 10nA) type capacitor. Ceramic capacitors recommended; capacitor values lower than 100pF avoid influence parasitic capacitances. MAX16910 package features exposed thermal underside that should used heatsink. This lowers package's thermal resistance providing direct heat-conduction path from PCB. Connect exposed system ground using large ground plane, multiple vias ground plane layer.
Exposed
1.951W 0.0244 (125°C 70°C) 609mW
establish maximum output current:
OUT(MAX)
609mW 48mA 3.3V
Example (TDFN-EP Package): +50°C, VOUT Calculate maximum allowable power dissipation given temperature follows: 1.951W
DERATE 23.3mW/°C 1.861W 8-PIN SO-EP 1.951W 8-PIN TDFN-EP
Find maximum output current:
IOUT(MAX) 1.951W 488mA IOUT(MAX) 330mA (typ)
DERATE 24.4mW/°C
Example maximum output current calculated 488mA. allowable output current cannot exceed given internal current limit device 330mA (typ).
TEMPERATURE (°C)
Figure Calculated Maximum Power Dissipation Ambient Temperature
200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator
_Selector Guide
PART MAX16910CATA8/V+ MAX16910CATA9/V+ MAX16910CASA8/V+ MAX16910CASA9/V+ RESET THRESHOLD 87.5 92.5 87.5 92.5 IOUT (mA) PIN-PACKAGE TDFN-EP* (3mm 3mm) TDFN-EP* (3mm 3mm) SO-EP* (5mm 4mm) SO-EP* (5mm 4mm)
MAX16910
+Denotes lead(Pb)-free/RoHS-compliant package. Denotes automotive qualified part. Exposed pad.
_Chip PROCESS: BiCMOS DMOS
Information
PACKAGE TYPE
Package Information
latest package outline information land patterns, www.maxim-ic.com/packages. PACKAGE CODE DOCUMENT 21-0137 21-0111
TDFN-EP
SO-EP
T833+2 S8E+12
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600
2009 Maxim Integrated Products
Maxim registered trademark Maxim Integrated Products, Inc.

200mA, Automotive, Ultra-Low Quiescent Current, Linear Regulator

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