AS3643 Datasheet (austriamicrosystems) - 1300mA High Current LED Flash Driver

AS3643, 1300mA High Current LED Flash Driver

The AS3643 is an inductive high efficient DCDC step up converter with two current sinks.

The DCDC step up converter operates at a fixed frequency of 4MHz and includes soft startup to allow easy integration into noise sensitive RF systems.

The two current sinks can operate in flash / torch / assist (

AS3643 Features

* 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 1300mA

* Automatic current adjustment for low battery voltage

* PWM operation for lower output current for reliable light