SGM3141

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℃.