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LM3553 - 1.2A Dual Flash LED Driver

General Description

The LM3553 is a fixed frequency, current mode stepup DC/DC converter with two regulated current sinks.

The device is capable of driving loads up to 1.2A from a single-cell Li-Ion battery.

Key Features

  • 1.
  • 2 Accurate and Programmable LED Current up to 1.2A in 128 Steps.
  • Total Solution Size < 30mm2.
  • 90% Peak Efficiency.
  • Drives 2 LEDs in Series with 1.2A from 5V Input.
  • Drives 2 LEDs in Series with 600mA from 3.0V Input.
  • Drives 1 LED with 1.2A from 3.0V Input.
  • Adjustable Over-Voltage Protection Allows for Single or Series LED Operation.
  • Four Operating Modes: Torch, Flash, Indicator, and Voltage Mode (4.98V).
  • Programmab.

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📁 Similar Datasheet

Part Number Description Manufacturer
LM3553 1.2A Dual Flash LED Driver System 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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LM3553 www.ti.com SNVS414B – FEBRUARY 2008 – REVISED MAY 2013 LM3553 1.2A Dual Flash LED Driver System with I2C Compatible Interface Check for Samples: LM3553 FEATURES 1 •2 Accurate and Programmable LED Current up to 1.2A in 128 Steps • Total Solution Size < 30mm2 • 90% Peak Efficiency • Drives 2 LEDs in Series with 1.2A from 5V Input • Drives 2 LEDs in Series with 600mA from 3.0V Input • Drives 1 LED with 1.2A from 3.0V Input • Adjustable Over-Voltage Protection Allows for Single or Series LED Operation • Four Operating Modes: Torch, Flash, Indicator, and Voltage Mode (4.