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LM26

Texas Instruments
Part Number LM26
Manufacturer Texas Instruments
Description Factory-Preset Thermostat
Published Aug 22, 2021
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM26 SNIS115S – MAY 2001 – REV...
Datasheet PDF File LM26 PDF File

LM26
LM26

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM26 SNIS115S – MAY 2001 – REVISED SEPTEMBER 2015 LM26 SOT-23, ±3°C Accurate, Factory-Preset Thermostat 1 Features •1 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) 2 Applications • Microprocessor Thermal Management • Appliances • Portable Battery Powered Systems • Fan Control • Industrial Process Control • HVAC Systems • Remote Temperature Sensing • Electronic System Protection 3 Description The LM26 is a precision, single digital-output, lowpower 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 ...


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