Datasheet4U Logo Datasheet4U.com

SGM3122 - Charge Pump White LED Driver

General Description

The SGM3122 is a current-regulated white LED driver with integrated low dropout current sources and a high efficiency charge pump.

The charge pump has 1×/1.5× fractional operation mode.

The SGM3122 is designed for LCD display backlight applications.

Key Features

  • Input Voltage Range: 2.7V to 5.5V.
  • Support up to 4 LEDs at 30mA Each.
  • LED Brightness Control through PWM Signal.
  • 1× and 1.5× Charge Pump for High Conversion Efficiency.
  • Switching Frequency: 1MHz.
  • 0.5% Regulated Output 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.
  • Available in a Green TQFN-3×3-16L Package AP.

📥 Download Datasheet

Datasheet Details

Part number SGM3122
Manufacturer SG Micro
File Size 619.52 KB
Description Charge Pump White LED Driver
Datasheet download datasheet SGM3122 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
SGM31323 Constant Current RGB LED Driver SG Micro
SGM31324 RGB LED Driver SG Micro
SGM3134 White LED Driver SG Micro
SGM3200 Charge Pump Boost DC/DC Integrated Load Switch SG Micro
SGM3204 Unregulated 200mA Charge Pump Voltage Inverter SG Micro

Other Datasheets by SG Micro

Part Number Description
SGM3123 White LED Driver
SGM3124 White LED Charge Pump Current Source
SGM3127 White LED Driver
SGM3128 3-Channel LowDropout Low Side White LED Driver
SGM3110 Micro-Power Regulated Charge Pump

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
SGM3122 PWM Dimming, Charge Pump White LED Driver with Low Dropout Current Source GENERAL DESCRIPTION The SGM3122 is a current-regulated white LED driver with integrated low dropout current sources and a high efficiency charge pump. The charge pump has 1×/1.5× fractional operation mode. The SGM3122 is designed for LCD display backlight applications. 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 ISET reference current is set through an external resistor on the ISET pin. The SGM3122 supports up to 4 LED strings for total maximum 120mA current. In addition, the charge pump with current control reduces input current ripple and ensures low EMI.