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LM3551

Part Number	LM3551
Manufacturer	National Semiconductor
Description	1A White LED Driver
Published	Jan 9, 2006
Detailed Description	LM3551/LM3552 1A White LED Driver with Flash Timeout Protection August 2005 LM3551/LM3552 1A White LED Driver with Fla...
Datasheet	LM3551 PDF File

Overview

LM3551/LM3552 1A White LED Driver with Flash Timeout Protection August 2005 LM3551/LM3552 1A White LED Driver with Flash Timeout Protection 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.
The LM3551 and LM3552 can drive one or more high current flash LEDs either in a high power Flash mode or a lower power Torch mode using the TORCH/FLASH pin.
A programmable Timeout function on the FTO pin forces the internal NFETs to turn off after a certain user defined time.
An external SD...

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