Microchip SG1544J-883B

Microchip SG1544J-883B

Manufacturer No:

SG1544J-883B

Manufacturer:

Microchip

Package:

18-DIP

Description:

Precision Output Supervisory Circuit Single Supply Monitors - Low Voltage Option, 5962-8774002VA

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SG1544J-883B Information

Microchip SG1544J-883B technical specifications, attributes, parameters and parts with similar specifications to Microchip SG1544J-883B.

  • Type
  • Parameter
  • Driver Type
  • Supervisor
  • Min Operating Voltage (V)
  • 999999
  • Max Operating Voltage (V)
  • 999999
  • Nominal Reset Voltage Min
  • 999999
  • Nominal Reset Voltage Max
  • 999999
  • Watchdog Timer
  • No
  • Manual Reset
  • No
  • Power Fail
  • No
  • Min Operating Ambient Temperature (°C)
  • 999999
  • Max Operating Ambient Temperature (°C)
  • 999999
  • Type
  • Parameter

Download datasheets and manufacturer documentation for Microchip SG1544J-883B.

This device was designed to provide all the operational features of the SG1543 device with the added advantage of uncommitted inputs to the voltage sensing comparators. This allows monitoring of voltage levels less than 2.5 volts by dividing down the internal reference supply. In all other respects, the SG1544 series is identical to the SG1543 series. These monolithic devices contain all the functions necessary to monitor and control the output of a sophisticated power supply system. Over-voltage sensing with provision to trigger an external SCR “crowbar” shutdown; an under-voltage circuit which can be used to monitor either the output or sample the input line voltage; and a third op-amp/comparator usable for current sensing are all included in this IC, together with an independent, accurate reference generator. The voltage-sensing input comparators are identical and can be used with threshold levels from zero volts to VIN (3V). Each has approximately 25mV of hysteresis which is offset so the switching differential threshold is zero on the non-inverting input for rising levels and zero on the inverting input for falling signals. All other operating characteristics are as described in the SG1543 data sheet and application note.


Microchip Ordering Part  Standard Microcircuit Drawing (SMD) 

SG1544J-DESC Cross Reference 5962-8774002VA

SG1544J-DESC Cross Reference 5962-8774002VX




  • Uncommitted Comparator Inputs for Wide Input Flexibility
  • Common-Mode Range from Zero to Near Supply Voltage
  • Reference Voltage Trimmed to 1% Accuracy
  • Over-Voltage, Under-Voltage, and Current Sensing Circuits all included
  • SCR "Crowbar" Drive of 300mA
  • Programmable Time Delays
  • Open-Collector Outputs and Remote Activation Capability
  • Total Standby Current Less Than 10mA

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