A8435 - High Efficiency Charge Pump White LED Driver

Allegro MicroSystems

Datasheet Details

Part number	A8435
Manufacturer	Allegro MicroSystems
File Size	356.19 KB
Description	High Efficiency Charge Pump White LED Driver
Datasheet	A8435_AllegroMicroSystems.pdf

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

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 output.
Low input ripple and EMI.
Soft-start limits inrush current.
Short circuit protection.
Overvoltage protection.
Thermal shutdown protection.

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Published: Apr 2, 2007 |