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LM3557

Part Number	LM3557
Manufacturer	National Semiconductor
Description	Step-Up Converter
Published	Mar 22, 2005
Detailed Description	LM3557 Step-Up Converter for White LED Applications November 2004 LM3557 Step-Up Converter for White LED Applications ...
Datasheet	LM3557 PDF File

Overview

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.
With small...

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