AS3649 Datasheet 2500mA High Current LED Flash Driver

Manufacturer: ams

Datasheet Details

Part number	AS3649
Manufacturer	ams
File Size	3.13 MB
Description	2500mA High Current LED Flash Driver
Datasheet	AS3649 Datasheet

The AS3649 is an inductive high efficient DCDC step up converter with two current sources.

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 sources can operate in flash / torch or video light modes.

AS3649 2500mA High Current LED Flash Driver 1 General.

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 2x1000mA(2x1250mA with current boost) or 2000mA and automatic load balancing for two LEDs.
Automatic current adjustment for low battery voltage.
PWM operation for lower output current for reliable light output of the LED; can run at 31.5kHz to avoid audible noise.
Protection functions: Automatic Flash Timeout time.

Part Number	Description
AS3630	8A Supercap Flash Driver
AS3668	4 Channel Breathlight Controller
AS3685A	Ultra Small High Efficiency 1000mA Charge Pump
AS3685B	Ultra Small High Efficiency 1000mA Charge Pump
AS3412	Ultra Small ANC Speaker Driver
AS3415	Integrated Active Noise Cancelling Solution
AS3418	Low Noise ANC
AS3435	Integrated Active Noise Cancelling Solution
AS3490	Highly Efficient 2-6 LEDs Backlight Driver
AS3492	Highly Efficient 2-10 LEDs Backlight Driver