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LM3557 - Step-Up Converter

This page provides the datasheet information for the LM3557, a member of the LM3 Step-Up Converter family.

Description

The LM3557 is a complete solution for white LED drive applications.

Features

  • n VIN Range: 2.7V.
  • 7.5V n Small External Components Typical.

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Datasheet preview – LM3557

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Full PDF Text Transcription

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LM3557 Step-Up Converter for White LED Applications November 2004 LM3557 Step-Up Converter for White LED Applications General Description The LM3557 is a complete solution for white LED drive applications. With minimal external component count, no DC current leakage paths to ground, cycle-by-cycle current limit protection, and output over-voltage protection circuitry, the LM3557 offer superior performance and cost savings over standard DC/DC boost component implementations. The LM3557 switches at a fixed-frequency of 1.25 MHz, which allows for the use of small external components. Also, the LM3557 has a wide input voltage range to take advantage of multi-cell input applications.
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