LM2792 Current Regulated Switched Capacitor LED Driver

National Semiconductor

Description

LM2792 Current Regulated Switched Capacitor LED Driver with Analog Brightness Control July 2002 LM2792 Current Regulated Switched Capacitor LED Driv.
The LM2792 is a CMOS charge-pump voltage doubler and regulator that provides two regulated current sources.

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Datasheet Specifications

Part number: LM2792
Manufacturer: National Semiconductor
File Size: 204.41 KB
Datasheet: LM2792_NationalSemiconductor.pdf
Description: Current Regulated Switched Capacitor LED Driver

Features

* n n n n n n n n n n n n n Output matching of ± 0.3% (typ. ) Drives up to two LED’s 3.0V to 5.8V Input Voltage Up to 34mA output current Soft start limits inrush current Analog brightness control Separate shutdown input Very small solution size and no inductor 1.4mA typical operating current 1µA (max.

Applications

* n White LED Display Backlights n White LED Keypad Backlights n 1-Cell Li-Ion battery-operated equipment including PDAs, hand-held PCs, cellular phones n Flat Panel Dispalys Basic Application Circuit 20024201 © 2002 National Semiconductor Corporation DS200242 www. national. com LM2792 Connection

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LM2792 Current Regulated Switched Capacitor LED Driver National Semiconductor

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