AS3643 Datasheet 1300ma High Current Led Flash Driver

Manufacturer: austriamicrosystems

Overview: valid Datasheet AS3643 1300mA High Current LED Flash Driver 1.

Datasheet Details

Part number	AS3643
Manufacturer	austriamicrosystems
File Size	3.47 MB
Description	1300mA High Current LED Flash Driver
Datasheet	AS3643-austriamicrosystems.pdf

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 (=video) light modes.

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 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.

Part Number	Description
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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