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
•	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
•	LM63CIM-16 with −16°C offset remote reading to allow measurement of remote temperatures > 127.875°C
•	8-pin SOIC package

Key Specification

■ Remote Diode Temp Accuracy (with quantization error)
Ambient Temp	Diode Temp	I_PWML Max	Version	Max Error
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

Typical Application

Parameters Values

Temp Resolution 11-bit/0.125degC

Remote Diode Thermal Sensors 1

TruTherm(TM) Beta Compensation No

Analog Inputs Undefined

ADC Resolution Undefined bits

Fan Speed Inputs 1

Fan Control Output(s) 1 PWM

Fan Control Method Lookup Table

VID Inputs Undefined

Dynamic VID VCCP Monitoring Undefined

Bidirectional PROCHOT Support Undefined

GPIOs Undefined

Interrupt Outputs 1

Reference Voltage Undefined

Temperature Accuracy (+/-) 1 deg C

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 bits

Temperature Accuracy (+/-) 1 deg C

Automotive Yes

PowerWise Yes

Typical Performance

*click for larger image

Also Recommended

LM96163▲

Improved Fan Control Functions With TruTherm Beta Compensation

Additional Resources

Design Tools

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	689 Kbytes	5-Aug-09	Download
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

500

LM63DIMA

SOIC NARROW

NOPB
STD

1
1

260
235

RoHS

Download

Full production

N/A

1K+

$1.00

rail
of
95

NSZXTT
LM63
DIMA

8 weeks

500

LM63CIMAX

SOIC NARROW

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.05

reel
of
2500

NSZXTT
LM63
CIMA

6 weeks

5000

LM63DIMAX

SOIC NARROW

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.00

reel
of
2500

NSZXTT
LM63
DIMA

6 weeks

3000

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.

The LM63CIM-16 remote diode temperature reading is shifted down 16°C as described by the equation:

True T_{DIODE JUNCTION}=T_LM63CIM-16 + 16°C

Reliability Metrics

Part Number	Process	EFR Sample Size	LTA Device Hours	FITS	MTTF (Hours)
LM63CIMA	CMOS7	18406	1089000	4	309006723
LM63CIMAX	CMOS7	18406	1089000	4	309006723
LM63DIMA	CMOS7	18406	1089000	4	309006723
LM63DIMAX	CMOS7	18406	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
SensorEval Software for Thermal Mangement Products			View

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]