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LM3551 - 1A White LED Driver

General Description

The LM3551 and LM3552 are fixed frequency, current mode step-up DC/DC converters with two integrated NFETs that can be used for precision LED brightness control.

The devices are capable of driving loads up to 1A from a single-cell Li-Ion battery.

Key Features

  • 1.
  • 2 Up to 1A Total Drive Current.
  • Flash Timeout Protection.
  • Independent Torch/Flash/Shutdown Modes.
  • LED Disconnect in Shutdown.
  • Programmable Soft-Start Limits Inrush Current.
  • Over-Voltage Protection.
  • Wide Voltage Range 2.7 to 5.5V.
  • 1.25MHz Constant Switching Frequency.
  • Small, Low Profile Package, Non-Pullback WSON(4mm x 4mm).

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM3551 1A White LED Driver National Semiconductor

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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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LM3551, LM3552 www.ti.com SNVS371D – AUGUST 2005 – REVISED MAY 2013 LM3551 /LM3552 1A White LED Driver with Flash Timeout Protection Check for Samples: LM3551, LM3552 FEATURES 1 •2 Up to 1A Total Drive Current • Flash Timeout Protection • Independent Torch/Flash/Shutdown Modes • LED Disconnect in Shutdown • Programmable Soft-Start Limits Inrush Current • Over-Voltage Protection • Wide Voltage Range 2.7 to 5.5V • 1.