500mA Buck/Boost Charge Pump LED Driver

The SGM3140B 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 SGM3140B has 1×/2× operation mode to control the output current for flash and torch modes. Both flash and to • Input Voltage Range: 2.7V to 5.5V\n\n• Up to 500mA Output Current\n\n• Up to 90% Efficiency in Torch Mode\n\n• Programmable Flash Current\n\n• Automatic Buck/Boost Mode Conversion\n\n• No External Inductors\n\n• High Switching Frequency: 2.2MHz\n\n• Low Reference for Low Loss Sensing: 47mV\n\n;

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