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SGM3124 Datasheet White Led Charge Pump Current Source

Manufacturer: SG Micro

Overview: SGM3124 White LED Charge Pump Current Source with PWM Brightness Control.

General Description

The SGM3124 is a charge pump with PWM brightness control for white LED supplies in LCD display backlight applications.

The supply voltage ranges from 2.7V to 5.5V, it is ideally suited for all applications powered by a single Li-ion battery cell or three to four NiCd, NiMH, or alkaline battery cells.

The device provides a constant current for each LED, and the initial current value can be set by an external resistor.

Key Features

  • Input Voltage Range: 2.7V to 5.5V.
  • Drives up to 3 LEDs at 30mA Each.
  • LED Brightness Control Through PWM Control Signal.
  • High Efficiency by Fractional Conversion with 1× and 1.5× Modes.
  • Switching Frequency: 1MHz.
  • Regulated Output Current with 0.5% Matching.
  • Internal Soft-Start Limits Inrush Current.
  • Low Input Ripple and Low EMI.
  • Over-Current and Over-Temperature Protected.
  • Under-Voltage Lockout With Hystere.

More Datasheets from SG Micro

Part Number Description
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SGM3128 3-Channel LowDropout Low Side White LED Driver
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SGM3131 120mA 4-Channel Charge Pump White LED Driver
SGM3132 4-Channel 1-Wire Dimming LED Driver
SGM3133 4-Channel Charge Pump White LED Driver
SGM3135 3-Channel LowDropout Low Side White LED Driver
SGM3138 6-Channel Charge Pump White LED Driver

SGM3124 Distributor