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LM63  Product Folder

±1°C/±3°C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control
Generic P/N 63
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) 0000000000.0000 
Temperature Max (deg C) 85 
Accuracy (+/-) (deg C) 1, 3 
Supply Min (Volt) 3 
Supply Max (Volt) 3.60 
Quiescent Current (mA) 2 
RemoteDiode ThermalSensor () 1 
Interface Type 2-Wire Serial 
Resolution (bit) 11 
Resolution degCperLSB () .1250 
Programmable Setpoints Yes 
Shutdown Yes 
Integrated FanControls () 1 
Interrupt Outputs () 1 
Fault Queue Yes 

Datasheet

TitleSize in KbytesDate
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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

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

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM63EVALevaluation boardFull production N/AN/A   N/A-
6 weeks0
LM63CIMASOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$2.20rail
of
95		NSXYTT
LM63
CIMA
10-12 weeks10000
LM63DIMASOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$2.20rail
of
95		NSXYTT
LM63
DIMA
10-12 weeks10000
LM63DIMAXSOIC NARROW8StatusFull productionN/AN/A 1K+$2.20reel
of
2500		NSXYTT
LM63
DIMA
10-12 weeks10000

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.

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)
AmbientTempDiodeTempIPWMLMaxVersionMaxError
30 to 50°C 60 to 100°C5 mALM63C±1.0°C
30 to 50°C60 to 100°C5 mALM63D±3.0°C
0 to 85°C25 to 125°C8 mAAll±3.0°C
Local Temp Accuracy (includes quantization error)
Ambient TempMax Error
25°C to 125°C ±3.0°C
Supply Voltage3.0 V to 3.6 V
Supply Current1.3 mA (typ)

Applications

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

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM63CIMACMOS721420014108000005226190940
LM63DIMACMOS721420014108000005226190940
LM63DIMAXCMOS721420014108000005226190940

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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