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TPS75105YFFRTIN/a3842avaiLow Dropout, Two-Bank LED Driver with PWM Brightness Control 9-DSBGA -40 to 85


TPS75105YFFR ,Low Dropout, Two-Bank LED Driver with PWM Brightness Control 9-DSBGA -40 to 85Features 3 DescriptionThe TPS7510x linear low dropout (LDO) matching1• Regulated Output Current wit ..
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TPS75105YFFR
Low Dropout, Two-Bank LED Driver with PWM Brightness Control
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TPS7510x

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TPS75100, TPS75103, TPS75105

SBVS080J –SEPTEMBER 2006–REVISED NOVEMBER 2016
TPS7510x Low Dropout, Two-Bank LED Driver With PWM Brightness Control Features
Regulated Output Current with 2% LED-to-LED
Matching Drives Upto Four LEDsat25 mA Eachina
Common Cathode Topology 28-mV Typical Dropout Voltage Extends Usable
Supply Rangein Li-Ion Battery Applications Brightness Control Using PWM Signals Two 2-LED Banks With Independent Enable and
PWM Brightness Control per Bank No Internal Switching Signals—Eliminates EMI Default LED Current Eliminates External
Components Default Values from3 mAto 10 mA(in 1-mA
Increments) Available Using Innovative Factory
EEPROM Programming Optional External Resistor canbe Usedfor
High-Accuracy, User-Programmable Current Over current and Over temperature Protection Availablein Wafer Chip-Scale Package 2.50-mm× 2.50-mm WSON-10 Applications Keypad and Display Backlighting White and Color LEDs Cellular Handsets PDAs and Smartphones Description
The TPS7510x linear low dropout (LDO) matching
LED current source is optimized for low-power
keypad and navigation pad LED backlighting
applications. The device providesa constant currentupto four unmatched LEDs organizedin two banks two LEDs eachina common-cathode topology.
Without an external resistor, the current source
defaultstoa factory-programmable, preset current
level with ±0.5% accuracy (typical). An optional
external resistor can be usedto set initial brightness user-programmable values with higher accuracy.
Brightness canbe varied fromoffto full brightnessby
inputtinga pulse width modulation (PWM) signal on
each enable pin (ENx, wherex indicates LED bankA B). Each bank has independent enable and
brightness control, but current matchingis donetoall
four channels concurrently. The input supply rangeis
ideally suited for single-cell Li-Ion battery supplies
and the TPS7510x can provideupto25 mA per LED. internal switching signals are used, eliminating
troublesome electromagnetic interference (EMI). The
TPS7510xis offeredin an ultra-small, 9-ball, 0.4-mm
ball-pitch wafer chip-scale package (WCSP) anda
2.50-mm× 2.50-mm, 10-pin WSON package, yielding very compact total solution size ideal for mobile
handsets and portable backlighting applications. The
deviceis fully specified overTJ= –40°Cto +85°C.
Device Information(1)

(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application Diagram
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