Texas Instruments LM63 Product Info

Parameters

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

Package

SOIC (D)-8-29.4 mm² 4.9 x 6

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.

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.

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.

ELECTRONIC COMPONENTS
All In One Distributor

LM63

1 remote and local temperature sensor with fan control

Texas Instruments LM63 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM63

1 remote and local temperature sensor with fan control

Texas Instruments LM63 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor