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Temperature Switch with Fixed Trip Points


Package | PIN: SOT-23 (DBV) | 5
Temp: M (-55 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.13
10-24 $1.01
25-99 $0.93
100-249 $0.80
250-499 $0.74
500-749 $0.60
750-999 $0.48
1000+ $0.43


  • Internal Comparator With Pin Programmable 2°C
    or 10°C Hysteresis
  • No External Components Required
  • Open-Drain or Push-Pull Digital Output; Supports
    CMOS Logic Levels
  • Internal Temperature Sensor With VTEMP Output
  • VTEMP Output Allows After-Assembly System
  • Internal Voltage Reference and DAC for Trip-Point
  • Currently Available in 5-pin SOT-23 Plastic
  • Excellent Power Supply Noise Rejection
  • UL Recognized Component
  • Key Specifications
    • Power Supply Voltage 2.7 V to 5.5 V
    • Power Supply Current
      40 µA (Maximum) 16 µA (Typical)
    • Hysteresis Temperature 2°C or 10°C (Typical)

Texas Instruments  LM26CIM5X-TPA/NOPB

The LM26 is a precision, single digital-output, low-power thermostat comprised of an internal reference, DAC, temperature sensor and comparator. Utilizing factory programming, it can be manufactured with different trip points as well as different digital output functionality. The trip point (TOS) can be preset at the factory to any temperature in the range of −55°C to 110°C in 1°C increments. The LM26 has one digital output (OS/OS/US/US), one digital input (HYST) and one analog output (VTEMP). The digital output stage can be preset as either open-drain or push-pull. In addition, it can be factory programmed to be active HIGH or LOW. The digital output can be factory programmed to indicate an over temperature shutdown event (OS or OS) or an under temperature shutdown event (US or US). When preset as an overtemperature shutdown (OS) it will go LOW to indicate that the die temperature is over the internally preset TOS and go HIGH when the temperature goes below (TOS–THYST). Similarly, when preprogrammed as an undertemperature shutdown (US) it will go HIGH to indicate that the temperature is below TUS and go LOW when the temperature is above (TUS+THYST). The typical hysteresis, THYST, can be set to 2°C or 10°C and is controlled by the state of the HYST pin. A VTEMP analog output provides a voltage that is proportional to temperature and has a −10.82 mV/°C output slope.

Available parts are detailed in the Device Comparison Table. For other part options, contact a Texas Instruments Distributor or Sales Representative for information on minimum order qualification. The LM26 is currently available in a 5-lead SOT-23 package.