A8503 Datasheet WLED/RGB Driver

Manufacturer: Allegro MicroSystems

Datasheet Details

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 V.

A8503 High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver for Medium Displays, with Integrated 55 V Power.

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 of 35 mA ▫ Adjustable overvoltage protection (OVP).
600 kHz to 2 MHz adjustable switching frequency ▫ Open or shorted LED string protection ▫ Open Schottky diode protection ▫ Overtemperature, cycle-by-cycle current limit, undervoltage, and soft start time-out protections ▫ Selectable lat.

Part Number	Description
A8502	High Efficiency Fault Tolerant LED Driver
A8504	WLED/RGB Backlight Driver
A8508	8-Channel Fault Tolerant LED Driver
A8509	High Efficiency 4-Channel Fault Tolerant LED Driver
A8510	High Efficiency Fault Tolerant LED Driver
A8511	4-Channel x 150 mA WLED/RGB Driver
A8514	High Efficiency Fault Tolerant LED Driver
A8515	Fault Tolerant LED Driver
A8517	Multi-Channel LED Driver
A8518	Fault-Tolerant LED Driver