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LM27966 - White LED Driver

General Description

The LM27966 is a highly integrated charge-pumpbased display LED driver.

The device can drive up to 6 LEDs in parallel with a total output current of 180mA.

Regulated internal current sources deliver excellent current and brightness matching in all LEDs.

Key Features

  • 1.
  • 2 91% Peak LED Drive Efficiency.
  • No Inductor Required.
  • 0.3% Current Matching.
  • Drives 6 LEDs with up to 30mA per LED.
  • 180mA of total driver current.
  • I2C Compatible Brightness Control Interface.
  • Adaptive 1×- 3/2× Charge Pump.
  • Resistor-Programmable Current Settings.
  • External Chip RESET Pin (RESET).
  • Extended Li-Ion Input: 2.7V to 5.5V.
  • Small low profile industry standard leadless package, WQFN 24 : (.

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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.

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LM27966 www.ti.com SNVS448B – JULY 2006 – REVISED MAY 2013 LM27966 White LED Driver with I2C Compatible Interface Check for Samples: LM27966 FEATURES 1 •2 91% Peak LED Drive Efficiency • No Inductor Required • 0.3% Current Matching • Drives 6 LEDs with up to 30mA per LED • 180mA of total driver current • I2C Compatible Brightness Control Interface • Adaptive 1×- 3/2× Charge Pump • Resistor-Programmable Current Settings • External Chip RESET Pin (RESET) • Extended Li-Ion Input: 2.7V to 5.5V • Small low profile industry standard leadless package, WQFN 24 : (4mm x 4mm x 0.8mm) APPLICATIONS • Mobile Phone Display Lighting • PDAs Backlighting • General LED Lighting DESCRIPTION The LM27966 is a highly integrated charge-pumpbased display LED driver.