1 remote and local temperature sensor with fan control

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 3 Type Fan Controller Operating temperature range (C) 0 to 125 Supply voltage (Min) (V) 3 Interface type SMBus Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 2000 Temp resolution (Max) (bits) 8 Features PWM output, Tachometer, ALERT Remote channels (#) 1 Addresses 1 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

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

Features

  • Accurately Senses Diode-Connected 2N3904 Transistors or Thermal Diodes On Board Large Processors or ASICs
  • Accurately Senses its Own Temperature
  • Factory Trimmed for Intel Pentium 4 and Mobile Pentium 4 Processor-M Thermal Diodes
  • Integrated PWM Fan Speed Control Output
  • Acoustic Fan Noise Reduction With User-Programmable 8-Step Lookup Table
  • Multi-Function, User-Selectable Pin for Either ALERT Output, or Tachometer Input, Functions
  • Tachometer Input for Measuring Fan RPM
  • Smart-Tach Modes for Measuring RPM of Fans With Pulse-Width-Modulated Power as Shown in Typical Application
  • Offset Register can Adjust for a Variety of Thermal Diodes
  • 10 Bit Plus Sign Remote Diode Temperature Data Format, With 0.125°C Resolution
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • LM86-Compatible Pinout
  • LM86-Compatible Register Set
  • 8-Pin SOIC Package

Intel is a trademark of Texas Instruments. Pentium is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

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Description

The LM63 is a remote diode temperature sensor with integrated fan control. The LM63 accurately measures: (1) its own temperature and (2) the temperature of a diode-connected transistor, such as a 2N3904, or a thermal diode commonly found on Computer Processors, Graphics Processor Units (GPU) and other ASIC's. The LM63 remote temperature sensor's accuracy is factory trimmed for the series resistance and 1.0021 non-ideality of the Intel 0.13 µm Pentium 4 and Mobile Pentium 4 Processor-M thermal diode. The LM63 has an offset register to correct for errors caused by different non-ideality factors of other thermal diodes.

The LM63 also features an integrated, pulse-width-modulated (PWM), open-drain fan control output. Fan speed is a combination of the remote temperature reading, the lookup table and the register settings. The 8-step Lookup Table enables the user to program a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise.

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Technical documentation

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Type Title Date
* Data sheet Accurate Remote Diode Dig Temp Sensor w/Integrated Fan Control datasheet (Rev. E) May 02, 2013
Technical article How to choose the right thermistor for your temperature sensing application Feb. 13, 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical article Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical article How to select a temperature sensor probe Feb. 18, 2016
User guide LM63LM64LM96x63EVM User's Guide Oct. 15, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description

The LM63LM64LM96x63EVM evaluation module (EVM) enables designers to immediately start evaluating the operation and performance of the LM63, LM64, LM96063, and LM96163 remote digital temperature sensor / fan controller family of ICs. All four devices can be evaluated by clicking on the appropriate (...)

Features
  • Evaluate LM63, LM64, LM96063, LM96163 fan controller family
  • Device selection via I2C switch
  • User friendly GUI interface
  • 3-pin or 4-pin fans pluggable through on-board connector
  • Powered by USB
  • Users may connect their own remote temperature diode

Software development

DRIVER OR LIBRARY Download
Eval Board Software for Hardware Monitors and Digital Temp Sensors
DIGITALTEMPSENSORSEVM-SW — Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
DRIVER OR LIBRARY Download
Linux Driver for LM63
LM63SW-LINUX The Linux driver supports the LM63 series of Remote Diode Temperature Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • (...)
DRIVER OR LIBRARY Download
Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SENSOREVAL SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.

  • Download SensorEval Software and Manual
  • Windows XP support is offered for (...)

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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