LM2765 Switched Capacitor
Voltage Converter
March 2000
LM2765 Switched Capacitor
Voltage Converter
General Description
The LM2765
CMOS charge-pump
voltage converter operates as a
voltage doubler for an input
voltage in the range of +1.
8V to +5.
5V.
Two low cost
capacitors and a diode are used in this circuit to provide up to 20 mA of output current.
The LM2765 operates at 50 kHz switching frequency to reduce output resistance and
voltage ripple.
With an operating current of only 130 µA (operating efficiency greater than 90% with most loads) and 0.
1µA typical shutdown current, the LM2765 provides ideal performance for battery powered systems.
The device is manufactured in a SOT-23-6 package.
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