A8504 Datasheet - Allegro

A8504 WLED/RGB Backlight Driver

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 V. The flexible channel selection control and high voltage capabilit.

A8504 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 (Vf = 3.5 V, If = 40 mA) ▪ External PWM control for LED dimming ▪ An external resistor for LED current setting ▪ Boost converter with integr

A8504-Allegro.pdf