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LM2664 - Switched Capacitor Voltage Converter

General Description

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

The device 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.

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2664 SNVS005E – NOVEMBER 1999 – REVISED DECEMBER 2014 LM2664 Switched Capacitor Voltage Converter.

Key Features

  • 1 Inverts Input Supply Voltage.
  • 6-Pin SOT-23 Package.
  • 12-Ω Typical Output Impedance.
  • 91% Typical Conversion Efficiency at 40 mA.
  • 1-µA Typical Shutdown Current 2.