LM2791 Overview
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 3V to 5.8V and maintain a constant current determined by an external set resistor.
LM2791 Key Features
- no inductor 0.7mA typical operating current 1µA (max.) shutdown current 450kHz switching frequency (min.) Linear regulat