LM2794 Datasheet Current Regulated Switched Capacitor LED Supply

Manufacturer: Texas Instruments

LM2794 current regulated switched capacitor led supply by Texas Instruments - Datasheet Preview

Datasheet Details

Part number	LM2794
Manufacturer	Texas Instruments
File Size	1.11 MB
Description	Current Regulated Switched Capacitor LED Supply
Datasheet	LM2794 Datasheet

General Description

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.

Overview

LM2794, LM2795 www.ti.com SNVS168L – JANUARY 2002 – REVISED MAY 2013 LM2794 /LM2795 Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control Check for Samples: LM2794,.

Key Features

1.
2 Regulated Current Sources with ±0.5% Matching between any Two Outputs.
High Efficiency 3/2 Boost Function.
Drives One, Two, Three or four White LEDs.
2.7V to 5.5V Input Voltage.
Up to 80mA Output Current.
Analog Brightness Control.
Active-Low or High Shutdown Input ('94/95).
Very Small Solution Size and no Inductor.
2.3µA (typ. ) Shutdown Current.
325kHz Switching Frequency (min. ).
Constant Freq.

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