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SG1543 - Power Supply Output Supervisory Circuit

Description

This monolithic integrated circuit contains all the functions necessary to monitor and control the output of a sophisticated power supply system.

Features

  • Over-Voltage, Under-Voltage, and Current Sensing Circuits all included.
  • Reference Voltage Trimmed to 1% Accuracy.
  • SCR "Crowbar" Drive of 300mA.
  • Programmable Time Delays.
  • Open-Collector Outputs and Remote Activation Capability.
  • Total Standby Current less than 10mA. High Reliability Features.
  • Available to MIL-STD-883, ¶ 1.2.1.
  • MSC-AMS level “S” Processing Available.
  • Available to DSCC.
  • Standard Microcircuit Drawing (SMD) February 2015 Rev.

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Full PDF Text Transcription

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SG1543/SG2543/SG3543 Power Supply Output Supervisory Circuit Description This monolithic integrated circuit contains 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 under-voltage (U.V.) circuit which can be used to monitor either the output or to sample the input line voltage; and a third op amp/comparator usable for current sensing (C.L.) are all included in this IC, together with an independent, accurate reference generator. Both over and under-voltage sensing circuits can be externally programmed for minimum time duration of fault before triggering.
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