AS3642 Datasheet Ultra Small 500ma Inductive White Led Flash Driver

Manufacturer: austriamicrosystems

Overview: valid Datasheet AS3642 Ultra Small 500mA Inductive White LED Flash Driver 1.

Datasheet Details

Part number	AS3642
Manufacturer	austriamicrosystems
File Size	1.55 MB
Description	Ultra Small 500mA Inductive White LED Flash Driver
Datasheet	AS3642-austriamicrosystems.pdf

The AS3642 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) and indicator mode.

Total flash driver solution only 11mm2.
High efficiency 4MHz fixed frequency DCDC Boost converter with soft start allows small coils.
LED currents Up to 500mA flash current (15.6mA steps) Up to 320mA torch current (10mA steps) 1.35mA,2.9mA,4.4mA or 6mA indicator light current (PWM with 14/32 duty cycle).
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.

Part Number	Description
AS3643	1300mA High Current LED Flash Driver
AS3644	Ultra Small Low Cost 320mA Inductive
AS3647	1600mA High Current LED Flash Driver
AS3647B	1600mA High Current LED Flash Driver
AS3648	2000mA High Current LED Flash Driver
AS3603	Multi-Standard Power Management Unit
AS3606	System PMU
AS3607	System PMU
AS3608	System PMU
AS3635	Xenon Flash Driver