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UC1544 - Power Supply Supervisory Circuit

Download the UC1544 datasheet PDF. This datasheet also covers the UC1543 variant, as both devices belong to the same power supply supervisory circuit family and are provided as variant models within a single manufacturer datasheet.

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).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC1543-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
UC1524A ADVANCED REGULATING PULSE WIDTH MODULATORS Unitrode
UC1525B Regulating Pulse Width Modulators Unitrode
UC1526 Regulating Pulse Width Modulator Unitrode
UC1526A Regulating Pulse Width Modulator Unitrode
UC1527B Regulating Pulse Width Modulators Unitrode

Other Datasheets by Texas Instruments

Part Number Description
UC1543 Power Supply Supervisory Circuit
UC1524 ADVANCED REGULATING PULSE WIDTH MODULATORS
UC1525A Regulating Pulse Width Modulators
UC1525B-SP RAD-TOLERANT CLASS-V REGULATING PULSE WIDTH MODULATOR
UC1527A Regulating Pulse Width Modulators

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
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.