AS3643 Datasheet - austriamicrosystems

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

AS3643-austriamicrosystems.pdf