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SGM3140B - 500mA Buck/Boost Charge Pump LED Driver

Datasheet Summary

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.

Features

  • a very low shutdown current, an automatic soft-start mode to limit inrush current, as well as over-current, over-voltage and over-temperature thermal shutdown control. A low current-sense reference voltage (47mV) allows the use of small 0603 current sensing resistors. The SGM3140B is available in Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃.

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Datasheet Details

Part number SGM3140B
Manufacturer Shengbang Microelectronics
File Size 421.61 KB
Description 500mA Buck/Boost Charge Pump LED Driver
Datasheet download datasheet SGM3140B Datasheet
Additional preview pages of the SGM3140B datasheet.

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Full PDF Text Transcription

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SGM3140B 500mA Buck/Boost Charge Pump LED Driver GENERAL 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. The SGM3140B automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. It switches at 2.2MHz, allowing the use of tiny components. The supply voltage ranges from 2.7V to 5.5V and is ideally suited for all applications powered by a single Li-ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells.
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