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ICL828 - Switched-Capacitor Voltage Inverter

General Description

The ICL828 contains all the necessary circuitry to complete a negative converter, utilizing two external inexpensive 10µF polarized electrolytic capacitor.

The mode of operation of the device may be understood by considering Figure 10 which shows an idealized negative voltage converter.

Key Features

  • 5-Lead SOT23-5 Package.
  • 99% Open Circuit Voltage Conversion Efficiency.
  • Inverts Input Supply Voltage.
  • High Power Supply Efficiency.
  • Input Voltage Range.
  • . . . +1.5V to +5.5V.
  • May be Cascaded to Increase Output Voltage.
  • Output Current.
  • . . . . 25mA.
  • Quiescent Current.
  • . 60µA.
  • Pin for Pin Compatible to MAX8.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com ICL828 TM Data Sheet June 2000 File Number 4835.1 Switched-Capacitor Voltage Inverter The ICL828 IC performs supply voltage conversions from positive to negative for an input range of +1.5V to +5.5V resulting in complementary output voltages of -1.5V to -5.5V. The ICL828 has a 12kHz internal oscillator and requires two capacitors to invert the supply voltage. Cascading may be made to increase the output voltage. The high efficiency (greater than 90% over most of the load-current range) and low operating current (60µA typical) make these devices ideal for both battery-powered and board-level voltage conversion applications.