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
