LM2794 Overview
The LM2794/95 is a fractional CMOS charge-pump that provides four regulated current sources. It accepts an input voltage range from 2.7V to 5.5V and maintains a constant current determined by an external sense resistor. The LM2794/5 delivers up to 80mA of load current to acmodate four White LEDs.
LM2794 Key Features
- 2 Regulated Current Sources with ±0.5% Matching between any Two Outputs
- High Efficiency 3/2 Boost Function
- Drives One, Two, Three or four White LEDs
- 2.7V to 5.5V Input Voltage
- Up to 80mA Output Current
- Analog Brightness Control
- Active-Low or High Shutdown Input ('94/95)
- Very Small Solution Size and no Inductor
- 2.3µA (typ.) Shutdown Current
- 325kHz Switching Frequency (min.)
