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LM2791 Datasheet - National Semiconductor

LM2791 - Current Regulated Switched Capacitor LED Driver

The LM2791 is a CMOS charge-pump voltage doubler and regulator that provides two regulated current sources.

The LM2791 is designed to drive two white (or blue) LEDs with matched currents (within ± 0.3%) to produce balanced light sources for display backlights.

They accept an input voltage range from

LM2791 Features

* n n n n n n n n n n n n n Output matching of ± 0.3% Drives up to two LED’s 3V to 5.8V Input Voltage Up to 36mA output current Soft start limits inrush current Analog brightness control Separate shutdown input Very small solution size - no inductor 0.7mA typical operating current 1µA (max.) shutdown

LM2791_NationalSemiconductor.pdf

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Datasheet Details

Part number:

LM2791

Manufacturer:

National Semiconductor

File Size:

226.70 KB

Description:

Current regulated switched capacitor led driver.

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