AS3647 - 1600mA High Current LED Flash Driver

austriamicrosystems

Datasheet Details

The AS3647/47B is an inductive high efficient DCDC step up converter with two current sinks..

High efficiency 4MHz fixed frequency DCDC Boost converter with soft start allows small coils - Stable even in coil current limit.
LED current adjustable up to 1600mA.
Automatic current adjustment for low battery voltage.
PWM operation for lower output current for reliable light output of the LED; running at 31.25kHz to avoid audible noise.
Protection functions: Automatic Flash Timeout timer to protect the LED(s) Overvoltage and undervoltage Protection Overtemperature Pr.

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