Datasheet4U Logo Datasheet4U.com

SG1543 - Power Supply Output Supervisory Circuit

General Description

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

Key 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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
SG1543 POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT LINFINITY
SG1540 OFF-LINE START-UP CONTROLLER LINFINITY
SG1544 LOW-VOLTAGE SUPERVISORY CIRCUIT LINFINITY
SG1548 QUAD POWER FAULT MONITOR LINFINITY
SG1549 CURRENT SENSE LATCH LINFINITY

Other Datasheets by Microsemi (now Microchip Technology)

Part Number Description
SG1524 Regulating Pulse Width Modulator
SG1524B Regulatating Pulse Width Modulator
SG1525A Regulating Pulse Width Modulator
SG1526 REGULATING PULSE WIDTH MODULATOR
SG1526B REGULATING PULSE WIDTH MODULATOR

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.

View original datasheet text
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.