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LM3555 - Synchronous Boost Converter

General Description

The LM3555 is a 2-MHz fixed-frequency, currentmode synchronous boost converter designed to drive either a single flash LED at 500 mA or two series flash LEDs at 400 mA.

Key Features

  • 1 High-Voltage High-Side Current Source Allows for Grounded Cathode LED Operation.
  • Synchronous Boost Converter.
  • Peak Converter Efficiency > 90%.
  • Accurate and Programmable LED Current Ranging From 60 mA to 500 mA.
  • Adaptive LED Current Range Based on LED Configuration.
  • Dedicated Indicator Current Source.
  • Dedicated Torch and Strobe Pins.
  • Dual Mode Control (General Purpose or I2C).
  • Broken Inductor Detection.
  • Ou.

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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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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3555 SNVS594G – DECEMBER 2008 – REVISED APRIL 2016 LM3555 Synchronous Boost Converter With 500-mA High-Side LED Driver and Dual-Mode Control Interface 1 Features •1 High-Voltage High-Side Current Source Allows for Grounded Cathode LED Operation • Synchronous Boost Converter • Peak Converter Efficiency > 90% • Accurate and Programmable LED Current Ranging From 60 mA to 500 mA • Adaptive LED Current Range Based on LED Configuration • Dedicated Indicator Current Source • Dedicated Torch and Strobe Pins • Dual Mode Control (General Purpose or I2C) • Broken Inductor Detection • Output Overvoltage Protection • Output and LED Short-Circuit Protection • 400-kHz I2C-Compatible Interface 2 Applications Camer