A8503 Description
The A8503 is a multi-output WLED/RGB LED driver for medium-size LCD backlighting. It integrates a current-mode boost converter with internal power switch and six current sinks. The boost converter can provide output voltages up to 47.
A8503 Key Features
- Active current sharing between LED strings for ±0.6% accuracy and matching
- Drives up to 12 series × 6 parallel = 72 LEDs (Vf = 3.2 V, If = 20 mA) at 5 V ▫ Each individual current sink is capable
- 600 kHz to 2 MHz adjustable switching frequency ▫ Open or shorted LED string protection ▫ Open Schottky diode protection
- No audible MLCC noise during PWM dimming
- No pull-up resistors required for LED modules that use