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UC1903 - Quad Supply and Line Monitor

General Description

The UC1903 family of quad supply and line monitor integrated circuits will respond to under- and over-voltage conditions on up to four continuously monitored voltage levels.

An internal op-amp inverter allows at least one of these levels to be negative.

Key Features

  • 1.
  • Inputs for Monitoring up to Four Separate Supply Voltage Levels.
  • Internal Inverter for Sensing a Negative Supply Voltage.
  • Line/Switch Sense Input for Early Power Source Failure Warning.
  • Programmable Under- and Over-Voltage Fault Thresholds with Proportional Hysteresis.
  • A Precision 2.5-V Reference.
  • General Purpose Op-Amp for Auxiliary Use.
  • Three High Current, >3 0mA, Open-Collector Outputs Indicate Over-Voltage, Under-Voltage and P.

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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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UC1903 UC2903 UC3903 www.ti.com ........................................................................................................................................ SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008 Quad Supply and Line Monitor FEATURES 1 • Inputs for Monitoring up to Four Separate Supply Voltage Levels • Internal Inverter for Sensing a Negative Supply Voltage • Line/Switch Sense Input for Early Power Source Failure Warning • Programmable Under- and Over-Voltage Fault Thresholds with Proportional Hysteresis • A Precision 2.