SGM3140 Description
The SGM3140 is a current-regulated buck/boost charge pump LED driver capable of driving 500mA output current. It is ideal for powering high brightness LEDs for camera flash applications. The SGM3140 has 1×/2× operation mode to control the output current for flash and torch modes.
SGM3140 Key Features
- Input Voltage Range: 2.7V to 5.5V
- Up to 500mA Output Current
- Up to 90% Efficiency in Torch Mode
- Programmable Flash Current
- Automatic Buck/Boost Mode Conversion
- No External Inductors
- High Switching Frequency: 2.2MHz
- Low Reference for Low Loss Sensing: 47mV
- Less than 1μA Shutdown Current
- Automatic Soft-Start for Reducing Inrush Current
SGM3140 Applications
- Input Voltage Range: 2.7V to 5.5V
- Up to 500mA Output Current
- Up to 90% Efficiency in Torch Mode