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LM2660 - Switched Capacitor Voltage Converter

Datasheet Summary

Description

The LM2660/LM2661 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage.

The LM2660/LM2661 uses two low cost capacitors to provide 100 mA of output current without the cost, size, and EMI related to inductor based converters.

Features

  • n n n n n n Inverts or doubles input supply voltage Narrow SO-8 and Mini SO-8 Package 6.5Ω typical output resistance 88% typical conversion efficiency at 100 mA (LM2660) selectable oscillator frequency: 10 kHz/80 kHz (LM2661) low current shutdown mode.

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Datasheet Details

Part number LM2660
Manufacturer National Semiconductor
File Size 296.68 KB
Description Switched Capacitor Voltage Converter
Datasheet download datasheet LM2660 Datasheet
Additional preview pages of the LM2660 datasheet.

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LM2660/LM2661 Switched Capacitor Voltage Converter September 1999 LM2660/LM2661 Switched Capacitor Voltage Converter General Description The LM2660/LM2661 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage. The LM2660/LM2661 uses two low cost capacitors to provide 100 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 120 µA and operating efficiency greater than 90% at most loads, the LM2660/LM2661 provides ideal performance for battery powered systems. The LM2660/LM2661 may also be used as a positive voltage doubler. The oscillator frequency can be lowered by adding an external capacitor to the OSC pin.
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