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LM2664 - Switched Capacitor Voltage Converter

Datasheet Summary

Description

The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V to the corresponding negative voltage of 1.8V to

5.5V.

The LM2664 uses two low cost capacitors to provide up to 40 mA of output current.

Features

  • n n n n n Inverts Input Supply Voltage SOT23-6 Package 12Ω Typical Output Impedance 91% Typical Conversion Efficiency at 40 mA 1µA Typical Shutdown Current.

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Datasheet Details

Part number LM2664
Manufacturer National Semiconductor
File Size 222.83 KB
Description Switched Capacitor Voltage Converter
Datasheet download datasheet LM2664 Datasheet
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LM2664 Switched Capacitor Voltage Converter November 1999 LM2664 Switched Capacitor Voltage Converter General Description The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V to the corresponding negative voltage of −1.8V to −5.5V. The LM2664 uses two low cost capacitors to provide up to 40 mA of output current. The LM2664 operates at 160 kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 220 µA (operating efficiency greater than 91% with most loads) and 1 µA typical shutdown current, the LM2664 provides ideal performance for battery powered systems. The device is in SOT-23-6 package.
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