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LM2765 - Switched Capacitor Voltage Converter

Datasheet Summary

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.

Features

  • n n n n n Doubles Input Supply Voltage SOT23-6 Package 20Ω Typical Output Impedance 90% Typical Conversion Efficiency at 20 mA 0.1µA Typical Shutdown Current.

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Datasheet Details

Part number LM2765
Manufacturer National Semiconductor
File Size 208.75 KB
Description Switched Capacitor Voltage Converter
Datasheet download datasheet LM2765 Datasheet
Additional preview pages of the LM2765 datasheet.

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Full PDF Text Transcription

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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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