A8500 - Flexible WLED/RGB Backlight Driver

Allegro MicroSystems

Datasheet Details

Part number	A8500
Manufacturer	Allegro MicroSystems
File Size	834.87 KB
Description	Flexible WLED/RGB Backlight Driver
Datasheet	A8500_AllegroMicroSystems.pdf

The A8500 is a multi-output WLED driver for medium display backlighting.

Active current sharing between LED strings for ±1.5% typical current matching and ±1.2% typical accuracy.
Drive up to 12 series × 8 parallel = 96 LEDs (Vf = 3.2 V, If = 20 mA).
Flexible dimming, using alternative methods: ▫ LED duty cycle control (PWM pin) ▫ DC current using serial programming (EN pin) ▫ DC current using external PWM signal (APWM pin) ▫ An external resistor.
Boost converter with integrated 50 V, 2 A DMOS.
LED sinks rated for 25 mA.
200 kHz to 2 MHz.

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Published: May 2, 2007 |