SGM3140B Overview
Description
The SGM3140B is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications. The charge pump can be set to regulate two current levels for Flash and Torch modes.
Key Features
- Output Current Up to 500mA
- Up to 90% Efficiency in Torch Mode
- Adjustable Flash Mode Current
- Automatic Buck/Boost Mode Switchover
- Input Voltage Range: 2.7V to 5.5V
- Minimum External Components: No Inductors
- High Frequency Operation: 2.2MHz
- Low 47mV Reference for Low Loss Sensing
- IQ < 1μA in Shutdown
- Automatic Soft-Start Limits Inrush Current
