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LM2663 - Switched Capacitor Voltage Converter

Datasheet Summary

Description

The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage.

The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters.

Features

  • Inverts or doubles input supply voltage Narrow SO-8 Package 3.5Ω typical output resistance 86% typical conversion efficiency at 200 mA (LM2662) selectable oscillator frequency: 20 kHz/150 kHz n (LM2663) low current shutdown mode n n n n n.

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Datasheet Details

Part number LM2663
Manufacturer National Semiconductor
File Size 282.98 KB
Description Switched Capacitor Voltage Converter
Datasheet download datasheet LM2663 Datasheet
Additional preview pages of the LM2663 datasheet.

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Full PDF Text Transcription

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LM2662/LM2663 Switched Capacitor Voltage Converter January 1999 LM2662/LM2663 Switched Capacitor Voltage Converter General Description The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage. The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 300 µA and operating efficiency greater than 90% at most loads, the LM2662/LM2663 provides ideal performance for battery powered systems. The LM2662/LM2663 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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