• Part: AS3644
  • Manufacturer: austriamicrosystems
  • Size: 1.45 MB
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AS3644 Key Features

  • Total flash driver solution only 11mm2 -High efficiency 4MHz fixed frequency DCDC Boost
  • Flash LED(s) cathode connected to ground: Improved thermal performance (ground = heat sink) Simplified PCB layout
  • Adjustable Flash Timer 30ms to 480ms in 30ms steps
  • Flash, Torch, Assist and Indicator Mode -Protection functions

Related austriamicrosystems Datasheets

Part Number Description
AS3642 Ultra Small 500mA Inductive White LED Flash Driver
AS3643 1300mA High Current LED Flash Driver
AS3647 1600mA High Current LED Flash Driver
AS3647B 1600mA High Current LED Flash Driver
AS3648 2000mA High Current LED Flash Driver

AS3644 Description

The AS3644 is an inductive high efficient DCDC step up converter driving a current source. 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 current source operates in flash/torch/assist (video/autofocus) mode.