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LM3553 - 1.2A Dual Flash LED Driver

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.

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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Datasheet preview – LM3553

Datasheet Details

Part number LM3553
Manufacturer Texas Instruments
File Size 1.04 MB
Description 1.2A Dual Flash LED Driver
Datasheet download datasheet LM3553 Datasheet
Additional preview pages of the LM3553 datasheet.

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Full PDF Text Transcription

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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.
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