LM2797/LM2798 120mA High Efficiency Step-Down Switched Capacitor
Voltage Converter with
Voltage Monitoring
April 2003
LM2797/LM2798 120mA High Efficiency Step-Down Switched Capacitor
Voltage Converter with
Voltage Monitoring
General Description
The LM2797/98 switched capacitor step-down DC/DC converters efficiently produce a 120mA regulated low-
voltage rail from a 2.
6V to 5.
5V input.
Fixed output
voltage options of 1.
5V, 1.
8V, and 2.
0V are available.
The LM2797/98 uses multiple fractional gain configurations to maximize conversion efficiency over the entire input
voltage and output current ranges.
Also contributing to high overall efficiency is the extremely low supply current of the LM279...