A8504 Description
The A8504 is a multi-output WLED driver for medium display backlighting. The A8504 integrates a boost converter and eight current-sinks to provide a WLED/RGB backlight driver. The boost converter can provide output voltage up to 47.
A8504 Key Features
- Active current sharing among 8 LED strings for ±1.3% typical current matching
- ±1.2% typical current accuracy
- Drive up to 11 series × 8 parallel = 88 LEDs
- External PWM control for LED dimming
- An external resistor for LED current setting
- Boost converter with integrated 50 V, 2 A DMOS
- LED sinks rated for 45 mA
- 200 kHz to 2 MHz switching frequency
- Open LED disconnect
- Boost current limit, thermal shutdown, and soft start