A8435 Datasheet - Allegro MicroSystems

A8435, High Efficiency Charge Pump White LED Driver

A8435 High Efficiency Charge Pump White LED Driver .
The A8435 high efficiency charge pump IC offers a simple, low-cost white LED driver solution for portable electronics display applications.

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A8435_AllegroMicroSystems.pdf

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Datasheet Details

Part number:

A8435

Manufacturer:

Allegro MicroSystems

File Size:

356.19 KB

Description:

High Efficiency Charge Pump White LED Driver

Features

* ▪ Proprietary adaptive control scheme (1×, 1.5×) ▪ Maximum efficiency, over 92% ▪ 0.5% LED current matching ▪ 1 MHz operating frequency ▪ Flexible dimming control: ▫ Serial 11-level dimming, down to 5% ▫ PWM ▫ 2-bit parallel ▪ Drives up to 4 white LEDs ▪ 30 mA per LED ▪ 120 mA total continuous outpu

Applications

* Using a proprietary control scheme (1×, 1.5×), the A8435 can output well-matched currents for up to 4 LEDs, while maintaining the highest efficiency over most of the Li-ion battery lifetime. The A8435 accepts an input range of 2.7 to 5.5 V and delivers up to 30 mA for each of the four regulated cur

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A8435 High Efficiency Charge Pump White LED Driver Allegro MicroSystems

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