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UC2543 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.) circuit which can be used to monitor either the output or to sample the input line voltage;.

UC2543 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
  • Unmitted parator Inputs for Low