TPS75105 Overview
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.
Key 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
- Over current and Over temperature Protection
- Available in Wafer Chip-Scale Package or 2.50-mm × 2.50-mm WSON-10
