LM2794 - Current Regulated Switched Capacitor LED Driver

This page provides the datasheet information for the LM2794, a member of the LM2 Current Regulated Switched Capacitor LED Driver family.

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
Additional preview pages of the LM2794 datasheet.

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

It accepts an input voltage range from 2.7V to 5.5V and maintains a constant current determined by an external sense resistor.

The LM2794/5 delivers up to 80mA of load current to accommodate four White LEDs.

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 |