Product details

SetPoint type Factory Programmed SetPoint value (deg C) -55 to 110, -45, -25, 0, 45, 50, 65, 70, 75, 85, 90, 95, 100, 105, 110, 115, 120 Operating temperature range (C) -55 to 125 Accuracy over temp range (Max) (C) 3 Sensor gain (mV/Deg C) -10.82 Output type Open Drain, Push Pull Supply voltage (Min) (V) 2.7 Supply voltage (Max) (V) 5.5 Supply current (Typ) (uA) 40 Comparator channels (#) 1 Features Built-in hysteresis, UL recognized Rating Catalog Interface type Analog output, Switch
SetPoint type Factory Programmed SetPoint value (deg C) -55 to 110, -45, -25, 0, 45, 50, 65, 70, 75, 85, 90, 95, 100, 105, 110, 115, 120 Operating temperature range (C) -55 to 125 Accuracy over temp range (Max) (C) 3 Sensor gain (mV/Deg C) -10.82 Output type Open Drain, Push Pull Supply voltage (Min) (V) 2.7 Supply voltage (Max) (V) 5.5 Supply current (Typ) (uA) 40 Comparator channels (#) 1 Features Built-in hysteresis, UL recognized Rating Catalog Interface type Analog output, Switch
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • 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
    Pin
  • VTEMP Output Allows After-Assembly System
    Testing
  • Internal Voltage Reference and DAC for Trip-Point
    Setting
  • Currently Available in 5-pin SOT-23 Plastic
    Package
  • 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)
  • 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
    Pin
  • VTEMP Output Allows After-Assembly System
    Testing
  • Internal Voltage Reference and DAC for Trip-Point
    Setting
  • Currently Available in 5-pin SOT-23 Plastic
    Package
  • 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)

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM26 SOT-23, ±3°C Accurate, Factory-Preset Thermostat datasheet (Rev. S) PDF | HTML 29 Sep 2015
Technical article How to choose the right thermistor for your temperature sensing application 13 Feb 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems 15 Oct 2019
Technical article Driving industrial innovation with small-size sensors 12 Sep 2019
Technical article How to select a temperature sensor probe 18 Feb 2016
EVM User's guide Using the LM26EVM 30 Nov 2015
EVM User's guide LM26EVAL-TPA LM26 Eval Board Manual 26 Jan 2012
User guide LM26EVAL-XPA LM26 Eval Kit Manual 26 Jan 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM26LVEVM — LM26LV 1.6V-Capable Temperature Sensor Switch with Factory Programmed Trip Points Evaluation Module

The LM26LVEVM allows users to evaluate the performance of the LM26LV temperature switch with factory programmed trip points and temperature sensor. The LM26LVEVM comes with a LM26LV factory programmed to trip at 80°C and headers to allow probing of the LM26LV pins.

User guide: PDF
Reference designs

PMP20967 — Adjustable dual-level constant-current load reference design for transient testing

This adjustable dual-level constant-current load reference design helps engineers test a power supply output load transient response with special features and easy operation. The board provides load transient adjustments for low and high level with slew rates as high as 100 A/µs. Timing (...)
Test report: PDF
Package Pins Download
SOT-23 (DBV) 5 View options

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