Description
The AS3647/47B 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.
Features
- 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 1600mA.
- 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.
AS3647B Datasheet
