LM2792 Datasheet (National Semiconductor) - Current Regulated Switched Capacitor LED Driver

LM2792, Current Regulated Switched Capacitor LED Driver

The LM2792 is a CMOS charge-pump voltage doubler and regulator that provides two regulated current sources.

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

The LM2792 accepts an input voltage range fr

LM2792 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.