A8503 - WLED/RGB Driver

Product Overview

Allegro

Part number	A8503
Manufacturer	Allegro
File Size	704.80 KB
Description	WLED/RGB Driver
Datasheet	A8503 Datasheet
Additional preview pages of the A8503 datasheet.

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.

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.

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Published: Jan 8, 2025 |