LM2794 - Current Regulated Switched Capacitor LED Driver

Product Overview

National Semiconductor

Part number	LM2794
Manufacturer	National Semiconductor
File Size	470.52 KB
Description	Current Regulated Switched Capacitor LED Driver
Datasheet	LM2794 Datasheet
Note	This datasheet PDF includes multiple part numbers: LM2794, LM2. Please refer to the document for exact specifications by model.
Additional preview pages of the LM2794 datasheet.

The LM2794/95 is a fractional CMOS charge-pump that provides four regulated current sources.

n Regulated current sources with ± 0.5% matching between any two outputs n High efficiency 3/2 boost function n Drives one, two, three or four white LEDs n 2.7V to 5.5V Input Voltage n Up to 80mA output current n Analog brightness control n Active-low or high shutdown input (’94/95) n Very small solution size and no inductor n 2.3µA (typ. ) shutdown current n 325kHz switching frequency (min. ) n Constant Frequency generates predictable noise spectrum n Standard Micro SMD-14 package: 2.08mm X 2.403.

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Published: Mar 22, 2005 |