700mA Buck/Boost Charge Pump LED Driver
700mA Buck/Boost Charge Pump LED Driver

The SGM3141 is a current-regulated buck/boost charge pump LED driver capable of driving 700mA output current. It is ideal for powering high brightness LEDs for camera flash applications. The SGM3141 has 1×/2× operation mode to control the output current for flash and torch modes.

The supply voltage operates from 2.7V to 5.5V and is well suited for various applications powered by a 1-cell Li-Ion battery, as well as 3-cell or 4-cell NiCd, NiMH or Alkaline batteries. The SGM3141 automatically converts between boost and buck modes. Therefore, it ensures that LED current cannot be restricted by the forward voltage. High switching frequency makes it easy to use tiny components. Small 0603 current sense resistors can be used due to the low FB reference voltage.

The SGM3141 provides very low shutdown current and soft-start function. Built-in soft-start circuitry avoids excessive inrush current during startup. The SGM3141 also includes a comprehensive set of protection features such as over-voltage protection, over-current protection and thermal shutdown.

The SGM3141 is available in a Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40 to +85.



  • Input Voltage Range: 2.7V to 5.5V

  • Up to 700mA Output Current

  • Up to 90% Efficiency in Torch Mode

  • Programmable Flash Current

  • Automatic 1× and 2× Modes for High Efficiency

  • 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

  • Low Input and Output Ripple and Low EMI

  • Protection Features

    Output Over-Voltage Protection

    Over-Current Protection

    Thermal Shutdown

  • Available in a Green TDFN-3×3-10L Package


White LED Torch or Flash for Mobile Phones,

Camcorders and DSCs

Generic Lighting, Strobe and Flash Applications

White LED Backlighting

General Purpose High Current Boost

Part Number Status Package Pins Pb-Free Temp Range
SGM3141YD10G/TR Production TDFN-3×3-10L 10 Y -40℃ to +85℃ Samples