±2°C, 3.0V to 5.5V industry standard temperature sensor with I2C/SMBus interface

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 2 Product type Local Operating temperature range (C) -55 to 125 Supply voltage (Min) (V) 3 Interface type I2C, SMBus, 2-Wire Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 500 Temp resolution (Max) (bits) 9 Features UL recognized Remote channels (#) 0 Addresses 8 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Digital temperature sensors

Features

  • No External Components Required
  • Shutdown Mode to Minimize Power Consumption
  • Up to Eight LM75s Can be Connected to a Single Bus
  • Power Up Defaults Permit Stand-alone Operation as Thermostat
  • UL Recognized Component (LM75B and LM75C)
  • Key Specifications:
    • Supply Voltage
      • LM75B, LM75C: 3 V to 5.5 V
    • Supply Current
      • Operating: 280 μA (typical)
      • Shutdown: 4 μA (typical)
    • Temperature Accuracy
      • −25°C to 100°C: ±2°C (maximum)
      • −55°C to 125°C: ±3°C (maximum)

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Description

The LM75B and LM75C are industry-standard digital temperature sensors with an integrated Sigma-Delta analog-to-digital converter and I2C interface. The LM75 provides 9-bit digital temperature readings with an accuracy of ±2°C from -25°C to 100°C and ±3°C over –55°C to 125°C.

Communication is accomplished over a 2-wire interface which operates up to 400kHz. The LM75 has three address pins, allowing up to eight LM75 devices to operate on the same 2-wire bus. The LM75 has a dedicated over-temperature output (O.S.) with programmable limit and hystersis. This output has programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S. is activated.

The wide temperature and supply range and I2C interface make the LM75 ideal for a number of applications including base stations, electronic test equipment, office electronics, personal computers, and any other system where thermal management is critical to performance. The LM75B and LM75C are available in an SOIC package or VSSOP package.

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Technical documentation

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Type Title Date
* Datasheet LM75x Digital Temperature Sensor and Thermal Watchdog With Two-Wire Interface datasheet (Rev. D) Oct. 15, 2015
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018
Application notes Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) May 06, 2013
Application notes Tiny Temperature Sensors for Remote Systems Feb. 17, 2003

Design & development

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Reference designs

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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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