LM63 - ±1°C/±3°C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control

	LM63 - ±1°C/±3°C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control from the PowerWise® Family

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	Design Tools	Knowledge Base

Features

•	Accurately senses diode-connected 2N3904 transistors or thermal diodes on-board large processors or ASIC's
•	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
•	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

Key Specification

Remote Diode Temp Accuracy (with quantization error)
AmbientTemp	DiodeTemp	I_PWMLMax	Version	MaxError
30 to 50°C	60 to 100°C	5 mA	LM63C	±1.0°C
30 to 50°C	60 to 100°C	5 mA	LM63D	±3.0°C
0 to 85°C	25 to 125°C	8 mA	All	±3.0°C
Local Temp Accuracy (includes quantization error)
Ambient Temp	Max Error
25°C to 125°C	±3.0°C
Supply Voltage	3.0 V to 3.6 V
Supply Current	1.3 mA (typ)

General Description

The LM63 is a remote diode temperature sensor with integrated fan control. More...

Applications

•	Computer Processor Thermal Management (Laptop, Desktop, Workstations, Servers)
•	Graphics Processor Thermal Management
•	Electronic Test Equipment
•	Projectors
•	Office Equipment
•	Industrial Controls

Typical Application

*click for larger image

Parametric Table expand

Parametric Table collapse

Remote Diode Thermal Sensors 1

TruTherm(TM) Beta Compensation No

Remote Diode Thermal Sensors 1

TruTherm(TM) Beta Compensation No

Interrupt Outputs 1

Temperature Min 0 deg C

Temperature Max 125 deg C

Interface Type SMBus

Supply Min 3 Volt

Supply Max 3.6 Volt

Quiescent Current 1.3 mA

Resolution 11 bit

Temperature Accuracy (+/-) 1 deg C

Automotive Selection Guide Yes

PowerWise Yes

View Using Catalog

Typical Performance

*click for larger image

Also Recommended

LM96163

Improved Fan Control Functions With TruTherm Beta Compensation

Additional Resources

Design Tools (see below)

Block Diagram

*click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LM63 ±1°C/±3°C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control	339 Kbytes	7-May-03	View Online	Download	Receive via Email
LM63 ±1°C/±3°C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control (Japanese)	739 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LM63CIMA

SOIC NARROW

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.05

rail
of
95

NSZXTT
LM63
CIMA

6 weeks

1000

LM63DIMA

SOIC NARROW

STD

NOPB

235

260

RoHS

Download

Full production

N/A

1K+

$1.00

rail
of
95

NSZXTT
LM63
DIMA

6 weeks

500

LM63CIMAX

SOIC NARROW

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.05

reel
of
2500

NSZXTT
LM63
CIMA

6 weeks

40000

LM63DIMAX

SOIC NARROW

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.00

reel
of
2500

NSZXTT
LM63
DIMA

6 weeks

20000

LM63EVAL

LM63 - ?1?C/?3?C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control

Full production

N/A

$88.00

8 weeks

N/A

General 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. For the latest information contact hardware.monitor.team@nsc.com.

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.

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM63CIMA	CMOS7	0	13906	0	0	862500	5	244736730
LM63CIMAX	CMOS7	0	13906	0	0	862500	5	244736730
LM63DIMA	CMOS7	0	13906	0	0	862500	5	244736730
LM63DIMAX	CMOS7	0	13906	0	0	862500	5	244736730

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
SensorEval Software for Thermal Mangement Products	6 Kbytes	15-May-2008	View

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[Information as of 29-Aug-2008]