31 August 2023

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Industrial 50mA Adjustable Voltage Regulator

CMT-STA4453 is part of the CMT series of components designed and qualified for high-temperature industrial and aerospace environments.

It is a high-temperature, high-reliability, 50mA adjustable linear voltage regulator suitable to generate from a +4.5V to +35V voltage source any regulated voltage in the range from +3.3V to +28V. Its operating junction temperature ranges from -55°C to +175°C. The regulator is self-protected with a built-in current limiter and a thermal protection. CMT-STA4453 brings unique benefits in applications where the ambient or operating temperature is high and above the temperature supported by traditional semiconductors.

CMT-STA4453 is available in a plastic package PSOIC8 with exposed pad for small PCB footprint and low thermal resistance.

 Typical performances

  • Temperature range: -55°C to 175°C
  • Input Voltage: 4.5V  to 35V
  • Output voltage: adjustable from 3.3V to 28V
  • Maximum Output current: 50mA
  • Total precision (absolute + drift): +/-5%
  • Over-current limitation
  • Quiescent current: 1.3mA Typ.
  • Stand-by current: 40µA Typ.
  • Package: plastic SOIC8 with exposed pad
  • Junction-to-ambient thermal resistance: 50°C/W



Regulated power supplies for embedded and power electronics in industrial and aerospace environments.


Design Support

If you need support for your high temperature design, contact Cissoid.

You can download CISSOID's Altium Library for IC symbols and package footprints. For the installation of the library, read the related Application Note.

A comprehensive Application Note explains how to optimize the PCB design for maximal thermal performance. This Application Note first explains how to minimize the junction-to-ambient thermal resistance. Then, the setup used for the characterization of the thermal resistance is described and the measurements results are provided. For optimized PCB layout, a junction-to-ambient thermal resistance of 50°C/W is measured. 


Ordering information

Product name Ordering reference Package Marking



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