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UC3543 - Power Supply Supervisory Circuit

General Description

The monolithic integrated circuits contain all the functions necessary to monitor and control the output of a sophisticated power supply system.

Key Features

  • Includes Over-Voltage, Under-Voltage, and Current Sensing Circuits.
  • Internal 1% Accurate Reference.
  • Programmable Time Delays.
  • SCR “Crowbar” Drive of 300 mA.
  • Remote Activation Capability.
  • Optional Over-Voltage Latch.
  • Uncommitted Comparator Inputs for Low Voltage Sensing (UC1544 Series Only).

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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.ti.com UC1543, UC1544 UC2543, UC2544 UC3543, UC3544 SLUS188A – APRIL 1997 – REVISED FEBRUARY 2007 Power Supply Supervisory Circuit FEATURES • Includes Over-Voltage, Under-Voltage, and Current Sensing Circuits • Internal 1% Accurate Reference • Programmable Time Delays • SCR “Crowbar” Drive of 300 mA • Remote Activation Capability • Optional Over-Voltage Latch • Uncommitted Comparator Inputs for Low Voltage Sensing (UC1544 Series Only) DESCRIPTION The monolithic integrated circuits contain all the functions necessary to monitor and control the output of a sophisticated power supply system. Over-voltage (O.V.) sensing with provision to trigger an external SCR “crowbar” shutdown; an undervoltage (U.V.