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LM27952

Part Number	LM27952
Manufacturer	National Semiconductor
Description	White LED Adaptive 1.5X/1X Switched Capacitor Current Driver
Published	Apr 22, 2010
Detailed Description	May 2005 www.DataSheet4U.com LM27952 White LED Adaptive 1.5X/1X Switched Capacitor Current Driver LM27952 White LED Ad...
Datasheet	LM27952 PDF File

Overview

May 2005 www.
DataSheet4U.
com LM27952 White LED Adaptive 1.
5X/1X Switched Capacitor Current Driver LM27952 White LED Adaptive 1.
5X/1X Switched Capacitor Current Driver General Description The LM27952 is a switched capacitor white-LED driver capable of driving up to 4 LEDs with 30mA through each LED.
Its 4 tightly regulated current sinks ensure excellent LED current and brightness matching.
LED drive current is programmed by an external sense resistor.
The LM27952 operates over an input voltage range from 3.
0V to 5.
5V and requires only four low-cost ceramic capacitors.
The LM27952 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2, or i...

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