AS3643 Datasheet 1300mA High Current LED Flash Driver

Manufacturer: austriamicrosystems

Datasheet Details

Part number	AS3643
Manufacturer	austriamicrosystems
File Size	3.47 MB
Description	1300mA High Current LED Flash Driver
Download	AS3643 Download (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.

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

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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AS3648	2000mA High Current LED Flash Driver
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AS3608	System PMU
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