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LDO Cntrlr REG CTRLR Adjustable 1.3V to 3.5V 24-Pin SOIC W Rail

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LM2637M General Description

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.


Key Features

  • 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)


place China launch_date Oct 1, 1998
last_inspection_date +90 rohs_version 2011/65/EU, 2015/863
supplier_cage_code 01295 htsusa 8542310001
schedule_b 8542310000 ppap False
aec False

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Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

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Ratings and Reviews

J**n Dec 27, 2023

Good described item, fast shipping. Thank you.

I**h Feb 06, 2022

The order reached the urals in 14 days. Package packed goodly. But the goods are intact. Appearance quality without complaints. The site contains a photo of the relay module version 1.0, and came version 4.0 supporting both the ESP-01 and 01 s. That's very good.

v**n Sep 07, 2021

The package is not the best but the transistors look fine.

N**e Jul 07, 2020

went on a short time ..but I recommend the seller.



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