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LM3549 - High Power Sequential LED Driver

Description

The LM3549 is a high power LED driver with up to 700mA output current.

It has three constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency.

LED drivers are designed for sequential drive so only one driver can be enabled at a time.

Features

  • 1.
  • 2 Over-Current Protection.
  • Over-Temperature Protection.
  • I2C Compatible Interface.
  • Under-Voltage Lockout.
  • LED Open and Short Protection and Detection.
  • 95% Peak Efficiency Buck-Boost Converter.
  • NVM Memory for Calibration Data and Standalone Usage without I2C Control.
  • Soft Start.

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Full PDF Text Transcription

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LM3549 www.ti.com SNVS640A – AUGUST 2010 – REVISED MAY 2013 LM3549 High Power Sequential LED Driver Check for Samples: LM3549 FEATURES 1 •2 Over-Current Protection • Over-Temperature Protection • I2C Compatible Interface • Under-Voltage Lockout • LED Open and Short Protection and Detection • 95% Peak Efficiency Buck-Boost Converter • NVM Memory for Calibration Data and Standalone Usage without I2C Control • Soft Start APPLICATIONS • Portable Video Projectors • High Power LED Driving KEY SPECIFICATIONS • Integrated buck-boost Converter • Programmable LED Drivers • 700 mA Maximum Drive Current • ±6% Current Accuracy Over Temperature • 24-pin WQFN Package DESCRIPTION The LM3549 is a high power LED driver with up to 700mA output current.
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