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LM3555 Datasheet Synchronous Boost Converter

Manufacturer: Texas Instruments

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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.

A high-voltage current source allows the LEDs to be terminated to the GND plane eliminating the need for an additional return trace back to the device.

A dual-mode control interface allows the user to configure the LM3555 with a general-purpose interface using two enable pins for control or an I2C allowing a higher level of control.

Overview

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.

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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