Temperature switches

Achieve autonomous temperature protection with configurable ALERT thresholds

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Monitor one or two temperature thresholds and send high/low digital output directly to a microcontroller GPIO or the enable-pin on a power supply for automatic protection of a system with our temperature switch portfolio. Our configurable temperature switches help minimize production costs with self-test capabilities, allow systems to be protected autonomously with integrated, selectable hysteresis for enhanced noise immunity, and reduce system size up to 50% versus discrete implementations.

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Select by parametric specification 

Threshold settings

Choose a device that fits your programmability needs.

Threshold range

Select a switch based on what temperature you need an alert to trigger.

Comparator channels

Choose a single or dual alert output device.

Rating

Meet stringent design requirements with our qualified device options.

Technical resources

E-book
E-book
An Engineer's Guide to Temperature Sensing (Rev. A)
With over 40-years experience helping customers optimize their temperature designs, we've developed a comprehensive e-book covering six unique application challenges involving unique sensor placement and routing considerations.
document-pdfAcrobat PDF
Application note
Application note
System Optimization Through Integrated Solutions for Temp. Threshold Detection
This document provides different solutions to thermal threshold detection and offers a comparison of the different methods. 
document-pdfAcrobat PDF
Video series
Video series
Build your expertise with TI Precision Labs - Temperature Sensors
Watch our video series on digital and analog temperature sensors, temperature switches and linear thermistors. Covering temperature sensor error and repeatability, sensitivity and gain and recommended operating points.

Discover featured applications

Avionics
Meet reliability standards for highly efficient engine controls, modern cockpit displays and reliable flight control units with our temperature sensing solutions
Video Surveillance
Achieve higher camera module reliability and performance by safeguarding against extreme environmental conditions with our low-power temperature sensing solutions
Fan Controllers
Realize higher power density in personal electronics, communications and enterprise applications while enabling reliable operation closer to thermal limits with our precise fan controllers

Meet reliability standards for highly efficient engine controls, modern cockpit displays and reliable flight control units with our temperature sensing solutions

Accurate temperature monitoring helps ensure aircraft reliability and extends operating lifetimes by protecting components near high-temperature engine compartments, preventing the overheating of fuel and hydraulic coolants, and regulating internal temperatures within aircraft cabins and infotainment systems.

Our temperature sensors offer:

  • Fail-safe functionality to prevent component failures at extreme temperatures
  • Overtemperature protection to prevent signal-frequency drift or failure to transmit
  • A small form factor to reduce board size

Featured resources

END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
  • TIDA-010049 – TUV-assessed digital input reference design for IEC 61508 (SIL-2)
PRODUCTS
  • TMP302 – Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches
  • TMP390 – Ultra-small, dual-channel (hot & cold trip), 0.5-µA, resistor-programmable temperature switch
  • TMP708 – Resistor-programmable temperature switch with 10°C and 30°C hysteresis
TECHNICAL RESOURCES

Achieve higher camera module reliability and performance by safeguarding against extreme environmental conditions with our low-power temperature sensing solutions

In video surveillance, temperature sensors calibrate and monitor components such as the core system on a chip and complementary metal-oxide semiconductor image sensor, while serving as a reference for the precise operation of thermal imaging cameras.

Our temperature sensors offer:

  • Small-form-factor and low-power-consumption solutions for compact camera modules
  • Overtemperature threshold protection for reliable operation in extreme temperatures
  • Programmable methods for switches, enabling flexibility in setting thermal trip points
  • Built-in self-test options to lower manufacturing costs

Featured resources

END-EQUIPMENT / SUB-SYSTEM
PRODUCTS
  • TMP302 – Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches
  • TMP390 – Ultra-small, dual-channel (hot & cold trip), 0.5-µA, resistor-programmable temperature switch
  • TMP708 – Resistor-programmable temperature switch with 10°C and 30°C hysteresis
TECHNICAL RESOURCES

Realize higher power density in personal electronics, communications and enterprise applications while enabling reliable operation closer to thermal limits with our precise fan controllers

In sophisticated cooling systems, overtemperature threshold monitoring in fan controllers helps extend component lifetimes, prevent failures or shutdowns, and optimize air flow to reduce noise and efficiently cool heat-generating components.

Our temperature sensors offer:

  • Auto Temperature Fan, Software RPM or Software DCY modes to optimize fan speeds based on user-defined parameters
  • Integrated pulse-width modulation for real-time system control to reduce downtime
  • Efficient and safe power management to maximize the performance of other sensors

Featured resources

END-EQUIPMENT / SUB-SYSTEM
REFERENCE DESIGNS
  • TIDA-00517 – Basic Fan Controller Reference Design with Over-Temperature Detection
PRODUCTS
  • TMP302 – Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches
  • TMP390 – Ultra-small, dual-channel (hot & cold trip), 0.5-µA, resistor-programmable temperature switch
  • AMC6821 – Integrated PWM fan controller, tachometer, 2-channel temperature sensor
TECHNICAL RESOURCES