LM3551 1A White LED Driver

National Semiconductor

Description

LM3551/LM3552 1A White LED Driver with Flash Timeout Protection August 2005 LM3551/LM3552 1A White LED Driver with Flash Timeout Protection General .
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 brightne.

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Datasheet Specifications

Part number: LM3551
Manufacturer: National Semiconductor
File Size: 756.51 KB
Datasheet: LM3551_NationalSemiconductor.pdf
Description: 1A White LED Driver

Features

* n n n n n n n n n Up to 1A total drive current Flash timeout protection Independent Torch/Flash/Shutdown modes LED disconnect in shutdown Programmable soft-start limits inrush current Over-voltage protection Wide voltage range 2.7 to 5.5V 1.25MHz constant switching frequency Small, low profile packa

Applications

* n n n n n n White LED Camera Flash White LED Torch (Flashlight) DSC (Digital Still Camera) Flash Cellular Camera Phone Flash PDA Camera Flash Camcorder Torch (Flashlight) lamp Typical Application Circuits 20151205 © 2005 National Semiconductor Corporation DS201512 www. national. com LM3551/LM355

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LM3551 White LED Driver National Semiconductor

National Semiconductor LM3551-like datasheet