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LM63

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1 remote and local temperature sensor with fan control

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Data sheet

LM63

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 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 Features ALERT, PWM output, Tachometer Supply current (max) (µA) 2000 Temp resolution (max) (bps) 8 Remote channels (#) 1 Addresses 1 Rating Catalog
Local sensor accuracy (max) 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 Features ALERT, PWM output, Tachometer Supply current (max) (µA) 2000 Temp resolution (max) (bps) 8 Remote channels (#) 1 Addresses 1 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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.

  • 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.

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.

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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Type Title Date
* Data sheet Accurate Remote Diode Dig Temp Sensor w/Integrated Fan Control datasheet (Rev. E) 02 May 2013

Design & development

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

Evaluation board

LM63LM64LM96X63EVM — LM63LM64LM96x63EVM - Evaluation Module for Remote Diode Digital Temperature Sensor with Fan Control

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 (...)

User guide: PDF
Not available on TI.com
Driver or library

LM63SW-LINUX — Linux Driver for LM63

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:
  • (...)
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Support software

DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
  • LM63 — 1 remote and local temperature sensor with fan control
  • LM64 — 1 remote and local temp sensor with fan control and 5 GPIO's
  • LM71 — ±1.5°C Temperature Sensor with SPI Interface
  • LM71-Q1 — Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface
  • LM73 — ±1°C Temperature Sensor with I2C/SMBus Interface
  • LM86 — ±0.75°C remote and local temperature sensor with SMBus interface
  • LM89 — ±0.75°C remote and local temperature sensor with SMBus interface and 2 addresses for bus sharing
  • LM90 — Remote and Local Temperature Sensor with SMBus Interface
  • LM93 — 2 remote, 1 local temp sensor with hardware monitor and 16 power supply voltage monitors
  • LM95010 — ±2°C Temperature Sensor with SensorPath Interface
  • LM95071 — ±1°C Temperature Sensor with SPI Interface
  • LM95221 — ±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C
  • LM95231 — Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
  • LM95235 — ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 65/90n
  • LM95235-Q1 — Automotive Grade, ±2°C Remote and Local Temperature Sensor with TruTherm Technology and SMBus
  • LM96000 — Hardware monitor with fan control and 6 power supply voltage monitors
  • LM96080 — 1 local temp sensor with fan speed and power supply voltage monitor
  • LM96163 — 1 remote and local temp sensor with beta compensation and fan control
  • LM99 — Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Download
Support software

SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors

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 (...)
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
  • LM63 — 1 remote and local temperature sensor with fan control
  • LM64 — 1 remote and local temp sensor with fan control and 5 GPIO's
  • LM71 — ±1.5°C Temperature Sensor with SPI Interface
  • LM71-Q1 — Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface
  • LM73 — ±1°C Temperature Sensor with I2C/SMBus Interface
  • LM75A — 2C industry standard temperature sensor, I2C/SMBus interface
  • LM86 — ±0.75°C remote and local temperature sensor with SMBus interface
  • LM89 — ±0.75°C remote and local temperature sensor with SMBus interface and 2 addresses for bus sharing
  • LM90 — Remote and Local Temperature Sensor with SMBus Interface
  • LM93 — 2 remote, 1 local temp sensor with hardware monitor and 16 power supply voltage monitors
  • LM95010 — ±2°C Temperature Sensor with SensorPath Interface
  • LM95071 — ±1°C Temperature Sensor with SPI Interface
  • LM95172-Q1 — Automotive Grade, ±1°C Temperature Sensor with 200°C Capability and SPI Interface
  • LM95214 — ±2°C Quad Remote and Local Temperature Sensor with SMBus Interface
  • LM95221 — ±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C
  • LM95231 — Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
  • LM95233 — ±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
  • LM95234 — ±2°C Quad Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
  • LM95235 — ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 65/90n
  • LM95235-Q1 — Automotive Grade, ±2°C Remote and Local Temperature Sensor with TruTherm Technology and SMBus
  • LM95241 — ±1.25°C dual remote & local temperature sensor with beta compensation and SMBus, I
  • LM95245 — ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 45nm d
  • LM96000 — Hardware monitor with fan control and 6 power supply voltage monitors
  • LM96080 — 1 local temp sensor with fan speed and power supply voltage monitor
  • LM96163 — 1 remote and local temp sensor with beta compensation and fan control
  • LM99 — Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Precision ADCs
  • ADC128D818 — 12-Bit, 82SPS, 8-Ch Delta-Sigma ADC with Temp Sensor, INT / EXT Voltage Reference & I2C Interface
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SOIC (D) 8 Ultra Librarian
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