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SGM3131 - 120mA 4-Channel Charge Pump White LED Driver

Description

The SGM3131 is a current-regulated white LED driver with integrated low dropout current sources and a high efficiency charge pump.

The charge pump has automatically selectable 1×/1.5× fractional operation modes.

Features

  • Input Voltage Range: 2.7V to 5.5V.
  • Support up to 4 LEDs at 30mA Each.
  • 16-Step LED Brightness Control Through One-Wire Interface.
  • 1× and 1.5× Charge Pump for High Conversion Efficiency.
  • Switching Frequency: 1MHz.
  • 1% Regulated LED Current Matching.
  • Built-in Soft-Start for Reducing Inrush Current.
  • Low Input Ripple and Low EMI.
  • Protection Features  Over-Current Protection  Under-Voltage Lockout  Thermal Shutdown.
  • Operating Temperature Range: -40℃.

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Datasheet Details

Part number SGM3131
Manufacturer SG Micro
File Size 633.51 KB
Description 120mA 4-Channel Charge Pump White LED Driver
Datasheet download datasheet SGM3131 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
SGM3131 120mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source GENERAL DESCRIPTION The SGM3131 is a current-regulated white LED driver with integrated low dropout current sources and a high efficiency charge pump. The charge pump has automatically selectable 1×/1.5× fractional operation modes. The SGM3131 is well suited for white LED applications powered by a Li-Ion battery due to small equivalent open-loop resistance in 1× mode. The supply voltage operates from 2.7V to 5.5V. The SGM3131 supports up to 4 LEDs for total maximum 120mA current. The ISET reference current is set through an external resistor on the ISET pin. The SGM3131 contains a 4-bit digital-to-analog converter for 16-step LED current control. The LED current can be set between 0.
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