Diodes Incorporated Launches Two 9-channel LED Drivers
Sep 29, 2010 Diodes Incorporated announced two 9-channel LED drivers with internal chargepumps for backlighting small-LCD screens, keypads and LED lights.
Working from 2.7V to 5.5V and driving 20mA, the applications include mobile phones and other portable consumer devices. Driving three groups of 3-LED channels and its three independent PWM dimmable control inputs, the AL3158 provides a simple drive for RGB LEDs. The AL3159, with its versatile 3-wire logic decoding of LED current control, simplifies the driving of 9-LEDs for illuminating LCD screens and
LED indicator control.
These devices save board space and reduce manufacturing costs. They offer up to 93% power efficiency, maximize battery life, and feature 1% current matching accuracy between channels to deliver an even, consistent screen image.
Both drivers are available in a lead-free, thermally enhanced, 20-pin 3mm x 3mm 0.6mm height QFN package.
Author: BIO T&T
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