A8435 Datasheet - Allegro MicroSystems

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. 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 o.

A8435 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

A8435_AllegroMicroSystems.pdf