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LM3554 - Synchronous Boost Converter

General Description

The LM3554 is a 2-MHz fixed-frequency, currentmode synchronous boost converter.

The device is designed to operate as a dual 600-mA (1.2 A total) constant-current driver for high-current white LEDs, or as a regulated 4.5-V or 5-V voltage source.

Key Features

  • 1 Input Voltage: 2.5 V to 5.5 V.
  • Programmable 4.5-V or 5-V Constant Output Voltage.
  • Dual High-Side Current Sources.
  • Grounded Cathode Allowing for Better Heat Sinking and LED Routing.
  • > 90% Efficiency.
  • Ultra-Small Solution Size: < 23 mm2.
  • Four Operating Modes: Torch, Flash, LED Indicator, and Voltage Output.
  • Accurate and Programmable LED Current from 37.5 mA to 1.2 A.
  • Hardware Flash and Torch Enable.
  • LED The.

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Other Datasheets by Texas Instruments

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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 LM3554 SNVS549C – JUNE 2009 – REVISED FEBRUARY 2016 LM3554 Synchronous Boost Converter With 1.2-A Dual High-Side LED Drivers and I2CCompatible Interface 1 Features •1 Input Voltage: 2.5 V to 5.5 V • Programmable 4.5-V or 5-V Constant Output Voltage • Dual High-Side Current Sources • Grounded Cathode Allowing for Better Heat Sinking and LED Routing • > 90% Efficiency • Ultra-Small Solution Size: < 23 mm2 • Four Operating Modes: Torch, Flash, LED Indicator, and Voltage Output • Accurate and Programmable LED Current from 37.5 mA to 1.