Step-Down Converter AAT1153 SwitchRegis 1.2MHz constant frequency
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AAT1
Step-Down Converter
AAT1153 SwitchRegis 1.2MHz constant frequency current mode step-down converter. ideal portable equipment requiring very high current from single-cell Lithium-ion batteries while still achieving over efficiency during peak load conditions. AAT1153 also 100% duty cycle dropout operation, extending battery life portable systems while light load operation provides very output ripple noise sensitive applications. AAT1153 supply output load current from 2.5V 5.5V input voltage output voltage regulated 0.6V. high switching frequency minimizes size external components while keeping switching losses low. internal slope compensation setting allows device operate with smaller inductor values optimize size provide efficient operation. AAT1153 available adjustable (0.6V VIN) fixed (1.8V) output voltage versions. device available Pb-free, 10-lead TDFN package rated over -40°C +85°C temperature range.
Features
Input Voltage Range: 2.5V 5.5V Output Voltages from 0.6V Output Current High Efficiency: 1.2MHz Constant Switching Frequency RDS(ON) Internal Switches: 0.15 Allows Ceramic Capacitors Current Mode Operation Excellent Line Load Transient Response Short-Circuit Thermal Fault Protection Soft Start Dropout Operation: 100% Duty Cycle Shutdown Current: ISHUTDOWN TDFN33-10 Package -40°C +85°C Temperature Range
Applications
Cellular Phones Digital Cameras Core Supplies PDAs Portable Instruments Smart Phones
Typical Application
2.5V-5.5V 2.2H VOUT 1.8V,
AAT1153-1.8
AGND AGND
PGND PGND
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AAT1
Step-Down Converter
Descriptions
Symbol
AGND FB/OUT PGND
Function
Enable pin. Active high. shutdown, functions disabled drawing supply current. leave floating. Power supply input pin. Must closely decoupled AGND with 2.2F greater ceramic capacitor. Analog supply input pin. Provides bias internal circuitry. Analog ground (AAT1153IDE-0.6): Adjustable version feedback input. Connect center point external resistor divider. feedback threshold voltage 0.6V. (AAT1153IDE-1.8): Fixed version feedback input. Connect output voltage, VOUT. Switching node pin. Connect output inductor this pin. Power ground Power ground exposed pad. Must connected bare copper ground plane.
Configuration
TDFN-10 (Top View)
AGND FB/OUT
PGND PGND AGND
adjustable voltage version (AAT1153IDE-0.6), fixed voltage version (AAT1153IDE-1.8).
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Step-Down Converter
Absolute Maximum Ratings1
Symbol
VFB, PGND, AGND TSTORAGE TLEAD
Description
Input Supply Voltages Voltages Voltage Ground Voltages Operating Temperature Range Storage Temperature Lead Temperature (Soldering, 10s)
Value
-0.3 -0.3 -0.3 -0.3
Units
Thermal Information2
Symbol
Description
Thermal Resistance3 Maximum Thermal Dissipation 25°C
Value
Units
°C/W
Absolute Maximum Ratings those values beyond which life device impaired. calculated from ambient temperature power dissipation according following formula: Thermal Resistance specified with approximately square inch copper.
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Step-Down Converter
Electrical Characteristics1
3.6V, -40°C +85°C unless otherwise noted; typical values 25°C. Symbol
VOUT VLINEREG/ VLOADREG/ IOUT FOSC THYS ILIM RDS(ON) VEN(L) VEN(H)
Description
Input Voltage Range2 Output Voltage Range Input Supply Current Feedback Input Bias Current Regulated Feedback Voltage3 Line Regulation Load Regulation Output Voltage Accuracy Oscillator Frequency Startup Time Over-Temperature Shutdown Threshold Over-Temperature Shutdown Hysteresis Peak Switch Current P-CH MOSFET N-CH MOSFET Enable Threshold Enable Threshold High Input Current
Conditions
0.6120 0.6135 0.6150 0.20
Units
Active Mode: 0.5V Shutdown Mode: VAIN 5.5V 0.65V 25°C 85°C -40°C 85°C 2.5V 5.5V, IOUT 10mA IOUT 10mA 2000mA 5.5V, IOUT 2000mA 0.6V From Enable Output Regulation
0.5880 0.5865 0.5850 0.6000 0.6000 0.6000 0.10 0.20 0.96
1.44
VOUT
3.6V 3.6V -1.0
5.5V
AAT1153 guaranteed meet performance specifications over -40°C +85°C operating temperature range assured design, characterization, correlation with statistical process controls. should less than VOUT VDROPOUT, where VDROPOUT IOUT (RDS(ON)PMOS ESRINDUCTOR), typically VDROPOUT 0.3V. regulated feedback voltage tested internal test mode that connects output error amplifier.
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Step-Down Converter
Typical Characteristics
Efficiency Output Current
(VOUT 3.3V, 25°C, 2.2µH, COUT 22µF)
Regulation
(VOUT 3.3V, 25°C, 2.2µH, COUT 22µF)
3.399
4.2V Output Voltage 3.7V 5.5V 5.0V
3.366 3.333 3.300 3.267 3.234 3.201
Efficiency
5.5V
5.0V
3.7V
4.2V
1000
10000
1000 1200 1400 1600 1800 2000
Output Current (mA)
Output Current (mA)
Efficiency Output Current
(VOUT 1.8V, 25°C, 2.2µH, COUT 22µF)
1.854
Regulation
(VOUT 1.8V, 25°C, 2.2µH, COUT 22µF)
Output Voltage
Efficiency
4.2V 3.6V 2.5V 5.0V 5.5V
1.836 1.818 1.800 1.782 1.764 1.746
4.2V
5.0V
5.5V
3.6V
2.5V
1000
10000
1000 1200 1400 1600 1800 2000
Output Current (mA)
Output Current (mA)
Efficiency Output Current
(VOUT 1.5V, 25°C, 2.2µH, COUT 22µF)
1.545
Regulation
(VOUT 1.5V, 25°C, 2.2µH, COUT 22µF)
Efficiency
3.6V 2.5V 5.5V 5.0V
Output Voltage
4.2V
1.530 1.515 1.500 1.485 1.470 1.455
4.2V
5.0V
5.5V
3.6V
2.5V
1000
10000
1000 1200 1400 1600 1800 2000
Output Current (mA)
Output Current (mA)
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Step-Down Converter
Typical Characteristics
Efficiency Output Current
(VOUT 1.2V, 25°C, 2.2µH, COUT 22µF)
1.236
Regulation
(VOUT 1.2V, 25°C, 2.2µH, COUT 22µF)
Efficiency
3.6V 2.5V
Output Voltage
4.2V
1.224 1.212 1.200 1.188 1.176 1.164
4.2V
5.0V
5.5V
5.5V 5.0V
2.5V
3.6V
1000
10000
1000 1200 1400 1600 1800 2000
Output Current (mA)
Output Current (mA)
Quiescent Current Input Voltage
25°C, 2.2µH, COUT 22µF)
0.38
Quiescent Current Temperature
2.2µH, COUT 22µF) Quiescent Current (µA)
0.36
Input Current (mA)
0.34 0.32 0.30 0.28 0.26 0.24 0.22 0.20
VOUT 3.3V
4.2V VOUT 3.3V 3.6V VOUT 1.8V
VOUT 1.8V
Input Voltage
Temperature (°C)
Line Regulation
(VOUT 1.8V, 2.2µH, COUT 22µF)
0.40
Accuracy
0.20
IOUT IOUT 600mA IOUT IOUT 1.5A
0.00
-0.20
IOUT
-0.40
Input Voltage
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Step-Down Converter
Typical Characteristics
P-Channel RDS(ON) Input Voltage
N-Channel RDS(ON) Input Voltage
85°C 25°C RDS(ON)_N
85°C
RDS(ON)_P
25°C -40°C
-40°C
Input Voltage
Input Voltage
Switching Frequency Temperature
(VIN 3.6V; VOUT 1.8V) Switching Frequency (MHz)
0.609 0.607 0.605 0.603 0.601 0.599 0.597 0.595 0.593
Reference Voltage Temperature
(VIN 3.6V)
Reference Voltage
0.591
Temperature (°C)
Temperature (°C)
Soft Start
(VIN 3.6V; VOUT 1.8V; IOUT 22pF) Enable Voltage (top) Output Voltage (middle)
-0.2
Load Transient Response
(VIN 3.6V; VOUT 1.8V; 2.2µH; COUT 22µF) Output Current (bottom) Output Voltage (top)
Input Current (bottom)
200mA
-0.2
Time (400µs/div)
Time (400µs/div)
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Step-Down Converter
Typical Characteristics
Output Ripple
(VIN 3.6V; VOUT 1.8V; IOUT 2.2µH) Inductor Current (bottom)
1.82 1.82
Output Ripple
(VIN 3.6V; VOUT 1.8V; IOUT 2.2µH) Inductor Current (bottom) Output Voltage (top)
1.81 1.80 1.79
Output Voltage (top)
1.81 1.80 1.79 -0.1
Time (100µs/div)
Time (400ns/div)
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AAT1
Step-Down Converter
Functional Block Diagram
SLOPE COMP ISENSE
0.6V
2.5V 5.5V
Softstart
RESET
COMP
LOGIC
NON-OVERLAP CONTROL
COUT
VOUT
FB/OUT 0.65V Over-Temperature Short-Circuit Protection
IZERO COMP
OVDET
0.6V
PGND
SHUTDOWN
AGND
*The resistor divider internally fixed output versions, externally adjustable output versions.
Functional Description
AAT1153 high output current monolithic switchmode step-down DC-DC converter. device operates fixed 1.2MHz switching frequency, uses slope compensated current mode architecture. This step-down DC-DC converter supply output current input voltage range from 2.5V 5.5V. minimizes external component size optimizes efficiency heavy load range. slope compensation allows device remain stable over wider range inductor values that smaller values 4.7H) with lower used achieve higher efficiency. Apart from small bypass input capacitor, only small filter required output. fixed output version requires only three external power components (CIN, COUT, adjustable version programmed with external feedback voltage, ranging from 0.6V near input voltage. uses internal MOSFETs achieve high efficiency generate very output voltages using internal reference 0.6V. dropout, converter duty cycle increases 100% output voltage tracks input voltage minus RDS(ON) drop P-channel
high-side MOSFET inductor DCR. internal error amplifier compensation provides excellent transient response, load line regulation. Internal soft start eliminates output voltage overshoot when enable input voltage applied.
Current Mode Control
Slope compensated current mode control provides stable switching cycle-by-cycle current limit excellent load line response with protection internal main switch (P-channel MOSFET) synchronous rectifier (N-channel MOSFET). During normal operation, internal P-channel MOSFET turned specified time ramp inductor current each rising edge internal oscillator, switched when peak inductor current above error voltage. current comparator, ICOMP, limits peak inductor current. When main switch off, synchronous rectifier turns immediately stays until either inductor current starts reverse, indicated current reversal comparator, IZERO, beginning next clock cycle.
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Step-Down Converter
Control Loop
AAT1153 peak current mode step-down converter. current through P-channel MOSFET (high side) sensed current loop control, well short circuit overload protection. slope compensation signal added sensed current maintain stability duty cycles greater than 50%. peak current mode loop appears voltage-programmed current source parallel with output capacitor. output voltage error amplifier programs current mode loop necessary peak switch current force constant output voltage load line conditions. Internal loop compensation terminates transconductance voltage error amplifier output. fixed voltage versions, error amplifier reference voltage internally program converter output voltage. adjustable output, error amplifier reference fixed 0.6V. Thermal protection completely disables switching when internal dissipation becomes excessive. junction over-temperature threshold 160°C with 10°C hysteresis. Once over-temperature over-current fault conditions removed, output voltage automatically recovers.
Dropout Operation
When battery input voltage decreases near value output voltage, AAT1153 allows main switch remain more than switching cycle increases duty cycle until reaches 100%. duty cycle step-down converter defined
FOSC 100%
VOUT 100%
Soft Start Enable
Soft start limits current surge seen input eliminates output voltage overshoot. enable active high. When pulled low, enable input (EN) forces AAT1153 into low-power, non-switching state. total input current during shutdown less than
Where main switch time FOSC oscillator frequency. output voltage then input voltage minus voltage drop across main switch inductor. input supply voltage, RDS(ON) P-channel MOSFET increases, efficiency converter decreases. Caution must exercised ensure heat dissipated does exceed maximum junction temperature
Current Limit Over-Temperature Protection
overload conditions, peak input current limited 3.5A. minimize power dissipation stresses under current limit short-circuit conditions, switching terminated after entering current limit series pulses. termination lasts seven consecutive clock cycles after current limit been sensed during series four consecutive clock cycles.
Maximum Load Current
AAT1153 will operate with input supply voltage 2.5V, however, maximum load current decreases lower input voltages large drop main switch synchronous rectifier. slope compensation signal reduces peak inductor current function duty cycle prevent sub-harmonic oscillations duty cycles greater than 50%. Conversely current limit increases duty cycle decreases.
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Applications Information
2.5V-5.5V 2.2H 22pF VOUT 1.8V, 634k 316k
stability. external resistor sets output voltage according following equation:
AAT1153-0.6
VOUT 0.6V
AGND AGND
PGND PGND
VOUT 0.6V
Figure Basic Application Circuit Adjustable Output Version.
Table shows resistor selection different output voltage settings.
19.6 29.4 39.2 49.9 59.0 68.1 78.7 88.7
VOUT
2.5V-5.5V 2.2H VOUT 1.8V,
316k
1000 1430
AAT1153-1.8
PGND PGND
AGND AGND
Figure Basic Application Circuit Fixed Output Versions.
Setting Output Voltage
Figure shows basic application circuit with AAT1153 adjustable output version while Figure shows application circuit with AAT1153 fixed output version. applications requiring adjustable output voltage, AAT1153-0.6 adjustable version externally programmed. Resistors Figure program output regulate voltage higher than 0.6V. limit bias current required external feedback resistor string while maintaining good noise immunity, minimum suggested value 59k. Although larger value will further reduce quiescent current, will also increase impedance feedback node, making more sensitive external noise interference. Table summarizes resistor values various output voltages with either good noise immunity 316k reduced load input current. adjustable version AAT1153, combined with external feed forward capacitor Figure delivers enhanced transient response extreme pulsed load applications. addition feed forward capacitor typically requires larger output capacitor
1.85
Table Resistor Selections Different Output Voltage Settings (Standard Resistors Substituted Calculated Values).
Inductor Selection
most designs, AAT1153 operates with inductor values 4.7H. inductance values physically smaller require faster switching, which results some efficiency loss. inductor value derived from following equation:
VOUT (VIN VOUT) fOSC
Where inductor ripple current. Large value inductors lower ripple current small value inductors result high ripple currents. Choose inductor ripple current approximately maximum load current
600mA
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Step-Down Converter
output voltages above 2.0V, when light-load efficiency important, minimum recommended inductor 2.2H. Manufacturer's specifications list both inductor current rating, which thermal limitation, peak current rating, which determined saturation characteristics. inductor should show appreciable saturation under normal load conditions. Some inductors meet peak average current ratings result excessive losses high DCR. Always consider losses associated with effect total converter efficiency when selecting inductor. optimum voltage-positioning load transients, choose inductor with series resistance 100m range. higher efficiency heavy loads (above 200mA), minimal load regulation (but some transient overshoot), resistance should kept below 100m. current rating inductor should least equal maximum load current plus half ripple current prevent core saturation 600mA). Table lists some typical surface mount inductors that meet target applications AAT1153. example, 2.2H CDRH5D16-2R2 inductor selected from Sumida 28.7m 3.0ADC current rating. full load, inductor loss 57mW which gives 1.6% loss efficiency 1200mA, 1.8V output. keep power supply stable when duty cycle above 50%, internal slope compensation (mA) should
0.75A/µs
Therefore, guarantee current loop stability, slope compensation ramp must greater than one-half down slope current waveform. internal slope compensated value 1A/s will guarantee stability using 2.2H inductor value output voltages from 0.6V 3.3V.
Input Capacitor Selection
input capacitor reduces surge current drawn from input switching noise from device. input capacitor impedance switching frequency should less than input source impedance prevent high frequency switching current passing input. calculated value varies with input voltage maximum when double output voltage.
Slope Compensation
AAT1153 step-down converter uses peak current mode control with slope compensation stability when duty cycles greater than 50%. slope compensation maintain stability with lower value inductors which provide better overall efficiency. output inductor value must selected inductor current down slope meets internal slope compensation requirements. example, value slope compensation 1A/s which large enough guarantee stability when using 2.2H inductor output voltage levels from 0.6V 3.3V. worst case external current slope using 2.2H inductor when VOUT 3.3V
CIN(MIN)
input capacitor sized maximum current must used. Ceramic capacitors with dielectrics highly recommended because their small temperature coefficients. ceramic capacitor most applications sufficient. large value used improved input voltage filtering. maximum input capacitor current
IRMS
VOUT 1.5A/µs
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Step-Down Converter
input capacitor ripple current varies with input output voltage will always less than equal half total load current. ripple) equivalent series resistance (ESR), equivalent series inductance (ESL), capacitance (C). output voltage droop load transient dominated capacitance ceramic output capacitor. During step increase load current, ceramic output capacitor alone supplies load current until loop responds. Within three switching cycles, loop responds inductor current increases match load current demand. relationship output voltage droop during three switching cycles output capacitance estimated
IRMS(MAX)
minimize stray inductance, capacitor should placed closely possible This keeps high frequency content input current localized, minimizing input voltage ripple. proper placement input capacitor (C1) seen evaluation board layout Figures laboratory test set-up typically consists long wires running from bench power supply evaluation board input voltage pins. inductance these wires, along with low-ESR ceramic input capacitor, create high network that affect converter performance. This problem often becomes apparent form excessive ringing output voltage during load transients. Errors loop phase gain measurements also result. Since inductance short trace feeding input voltage significantly lower than power leads from bench power supply, most applications exhibit this problem. applications where input power source lead inductance cannot reduced level that does affect converter performance, high tantalum aluminum electrolytic should placed parallel with ESR, bypass ceramic. This dampens high network stabilizes system.
COUT
ILOAD VDROOP
many practical designs, required ESR, capacitor with much more capacitance than needed must selected. both continuous discontinuous inductor current mode operation, COUT needed limit ripple peak-to-peak
Output Capacitor Selection
function output capacitance store energy attempt maintain constant voltage. energy stored capacitor's electric field voltage applied. value output capacitance generally selected limit output voltage ripple level required specification. Since ripple current output inductor usually determined VOUT VIN, series impedance capacitor primarily determines output voltage ripple. three elements capacitor that contribute impedance (and output voltage
Ripple current flowing through capacitor's causes power dissipation capacitor. This power dissipation causes temperature increase internal capacitor. Excessive temperature seriously shorten expected life capacitor. Capacitors have ripple current ratings that dependent ambient temperature should exceeded. output capacitor ripple current inductor current, minus output current, value ripple current flowing output capacitance (continuous inductor current mode operation) given
IRMS
0.289
problem causing ringing megahertz region controlled choosing capacitors, limiting lead length (PCB capacitor), replacing large device with several smaller ones connected parallel.
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Step-Down Converter
conclusion, order meet requirement output voltage ripple small regulation loop stability, ceramic capacitors with dielectrics recommended their high ripple current ratings. output ripple VOUT determined
TJ(MAX) PTOTAL TAMB
Layout Guidance
When laying board, following layout guideline should followed ensure proper operation AAT1153: exposed (EP) must reliably soldered plane. PGND below strongly recommended. power traces, including trace, trace trace should kept short, direct wide allow large current flow. connection pins should short possible. several pads when routing between layers. input capacitor (C1) should connect closely possible (Pin AGND (Pins good power filtering. Keep switching node, (Pins away from sensitive FB/OUT node. feedback trace (Pin should separate from power trace connect closely possible load point. Sensing along high-current load trace will degrade load regulation. external feedback resistors used, they should placed closely possible (Pin minimize length high impedance feedback trace. output capacitor should connected closely possible. connection should short possible there should signal lines under inductor. resistance trace from load return PGND should kept minimum. This will help minimize error regulation differences potential internal signal ground power ground.
VOUT (VIN VOUT) VOUT fOSC COUT fOSC
ceramic capacitor satisfy most applications.
Thermal Calculations
There three types losses associated with AAT1153 step-down converter: switching losses, conduction losses, quiescent current losses. Conduction losses associated with RDS(ON) characteristics power output switching devices. Switching losses dominated gate charge power output switching devices. full load, assuming continuous conduction mode (CCM), simplified form losses given
PTOTAL
(RDSON(HS) RDSON(LS) [VIN VO])
(tsw
step-down converter quiescent current. term used estimate full load step-down converter switching losses. condition where step-down converter dropout 100% duty cycle, total device dissipation reduces
PTOTAL RDSON(HS)
Since RDS(ON), quiescent current, switching losses vary with input voltage, total losses should investigated over complete input voltage range. Given total losses, maximum junction temperature derived from DFN-10 package which 45°C/W.
Figures show example layout with layers. internal layers SGND PGND.
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AAT1
Type
Shielded Shielded Shielded 5.8x5.8x1.8 8.3x8.3x3.0 5.2x5.2x3.0
Step-Down Converter
Manufacturer
Sumida Sumida Sumida Coiltronics Coiltronics Coiltronics
Part Number
CDRH5D16 CDRH8D28 SD53
Inductance
Current
28.7 35.6
Size LxWxH (mm)
Manufacturer
Murata Murata Murata
Part Number
GRM219R60J106KE19 GRM21BR60J226ME39 GRM1551X1E220JZ01B
Value
22pF
Voltage
Temp.
Case
0805 0805 0402
Table Suggested Component Selection Information.
SGND
AAT1153
PGND PGND
AGND
2.5V 5.5V
PGND SGND
PGND
SGND
2.2H
AGND
SGND
316k 634k 1.43M
1.2V, 1.8V, 2.5V, 3.3V VOUT
316k
SGND
22pF JP2_1-2: JP2_3-4: JP2_5-6: JP2_7-8: 1.2V; 1.8V; 2.5V; 3.3V.
CDRH5D16-2R2NC GRM21BR60J226ME39
Figure AAT1153 Adjustable Voltage Version Recommended Evaluation Board Schematic.
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Step-Down Converter
Figure AAT1153 Evaluation Board Component Side Layout.
Figure Exploded View AAT1153 Evaluation Board Component Side Layout.
Figure AAT1153 Evaluation Board Solder Side Layout.
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AAT1
Step-Down Converter
Step-Down Converter Design Example
Specifications
1.8V 2.7V 4.2V (3.6V nominal) 1.2MHz Transient droop 200mV 50mV
1.8V Output Inductor
600mA VOUT (VIN(MAX) VOUT) (4.2 1.8) 1.4µH VIN(MAX) fOSC
Sumida 2.2H inductor (CDRH2D14) with 75m, should
395mA 0.395 2.2A
IPKL
0.0287 114.8mW
1.8V Output Capacitor
COUT ILOAD 25µF; 22µF VDROOP
0.05 0.13 0.395
Select 22F, ceramic capacitor meet ripple 50mV requirement.
VOUT
VOUT (VIN VOUT) fOSC COUT fOSC (4.2 1.8) 0.01 5.7mV
IRMS 0.395 0.289 114mArms PCOUT I2RMS 0.01 =10mW
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Step-Down Converter
Input Capacitor
Input ripple 25mV
CIN(MIN)
13.9µF; 22µF 0.025 0.01
IRMS
1Arms
PCIN IRMS2 0.01 10mW
AAT1153 Losses
PTOTAL RDS(ON)P RDS(ON)N (tSW 0.095 10-9 498.9mW
0.135
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Step-Down Converter
Ordering Information
Output Voltage
Adj. 0.6V Fixed 1.8V
Package
TDFN33-10 TDFN33-10
Marking1
ZSXYY ZTXYY
Part Number (Tape Reel)2
AAT1153IDE-0.6-T1 AAT1153IDE-1.8-T1
AnalogicTech products offered Pb-free packaging. term "Pb-free" means semiconductor products that compliance with current RoHS standards, including requirement that lead exceed 0.1% weight homogeneous materials. more information, please visit website
Package Information3
TDFN33-10
0.600 0.050 0.350 0.100
Index Area
Detail
2.000 0.050
1.270 0.050
(optional)
C0.3 0.450 0.050
2.000 0.050
Bottom View
Indicator (optional)
View
0.230 0.050 0.229 0.051
0.850
Detail
0.050 0.050
Side View
dimensions millimeters.
assembly date code. Sample stock generally held part numbers listed BOLD. leadless package family, which includes QFN, TQFN, DFN, TDFN STDFN, exposed copper (unplated) lead terminals manufacturing process. solder fillet exposed copper edge cannot guaranteed required ensure proper bottom solder connection.
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Step-Down Converter
Advanced Analogic Technologies, Inc. 3230 Scott Boulevard, Santa Clara, 95054 Phone (408) 737-4600 (408) 737-4611
Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility circuitry other than circuitry entirely embodied AnalogicTech product. circuit patent licenses, copyrights, mask work rights, other intellectual property rights implied. AnalogicTech reserves right make changes their products specifications discontinue product service without notice. Except provided AnalogicTech's terms conditions sale, AnalogicTech assumes liability whatsoever, AnalogicTech disclaims express implied warranty relating sale and/or AnalogicTech products including liability warranties relating fitness particular purpose, merchantability, infringement patent, copyright other intellectual property right. order minimize risks associated with customer's applications, adequate design operating safeguards must provided customer minimize inherent procedural hazards. Testing other quality control techniques utilized extent AnalogicTech deems necessary support this warranty. Specific testing parameters each device necessarily performed. AnalogicTech AnalogicTech logo trademarks Advanced Analogic Technologies Incorporated. other brand product names appearing this document registered trademarks trademarks their respective holders.
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