TPS75105

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS75100, TPS75103, TPS75105 SBVS080J – SEPTEMBER 2006 – REVISED NOVEMBER 2016 TPS7510x Low Dropout, Two-Bank LED Driver With PWM Brightness Control 1 Features 1 Regulated Output Current with 2% LED-to-LED Matching Drives Up to Four LEDs at 25 mA Each in a Common Cathode Topology 28-mV Typical Dropout Voltage Extends Usable Supply Range in 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 from 3 mA to 10 mA (in 1-mA Increments) Available Using Innovative Factory EEPROM Programming – Optional External Resistor can be Used for High-Accuracy, User-Programmable Current Over current and Over temperature Protection Available in Wafer Chip-Scale Package or 2.50-mm × 2.50-mm WSON-10 2 Applications Keypad and Display Backlighting White and Color LEDs Cellular Handsets PDAs and Smartphones 3 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 provides a constant current to up to four unmatched LEDs organized in two banks of two LEDs each in a common-cathode topology. Without an external resistor, the current source defaults to a factory-programmable, p...