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LM63CIMAX Datasheet

  • LM63CIMAX

  • 【1C/【3C Accurate Remote Diode Digital Temperature Sensor w...

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  • NSC

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LM63
鹵
1藲C/
鹵
3藲C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control
May 2003
LM63
鹵
1藲C/
鹵
3藲C Accurate Remote Diode Digital Temperature
Sensor with Integrated Fan Control
General Description
The LM63 is a remote diode temperature sensor with inte-
grated 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 Pro-
cessor Units (GPU) and other ASIC鈥檚. The LM63 remote
temperature sensor鈥檚 accuracy is factory trimmed for the
series resistance and 1.0021 non-ideality of the Intel
廬
0.13
碌m Pentium
廬
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 di-
odes.
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.
n
10 bit plus sign remote diode temperature data format,
with 0.125藲C resolution
n
SMBus 2.0 compatible interface, supports TIMEOUT
n
LM86-compatible pinout
n
LM86-compatible register set
n
8-pin SOIC package
Key Specifications
j
Remote Diode Temp Accuracy
(with quantization
Max
Error
error)
Ambient
Temp
30 to 50藲C
30 to 50藲C
0 to 85藲C
Diode
Temp
60 to 100藲C
60 to 100藲C
25 to 125藲C
I
PWML
Max
5 mA
5 mA
8 mA
Version
LM63C
LM63D
All
Max Error
鹵
1.0藲C
鹵
3.0藲C
鹵
3.0藲C
j
Local Temp Accuracy (includes quantization error)
Ambient Temp
25藲C to 125藲C
j
Supply Voltage
j
Supply Current
鹵
3.0藲C
3.0 V to 3.6 V
1.3 mA (typ)
Features
n
Accurately senses diode-connected 2N3904 transistors
or thermal diodes on-board large processors or ASIC鈥檚
n
Accurately senses its own temperature
n
Factory trimmed for Intel Pentium 4 and Mobile Pentium
4 Processor-M thermal diodes
n
Integrated PWM fan speed control output
n
Acoustic fan noise reduction with User-programmable
8-step Lookup Table
n
Multi-function, user-selectable pin for either ALERT
output, or Tachometer input, functions
n
Tachometer input for measuring fan RPM
n
Offset register can adjust for a variety of thermal diodes
Applications
n
Computer Processor Thermal Management
(Laptop, Desktop, Workstations, Servers)
n
Graphics Processor Thermal Management
n
Electronic Test Equipment
n
Projectors
n
Office Equipment
n
Industrial Controls
Connection Diagram
20057001
Intel
廬
and Pentium
廬
are registered trademarks of Intel Corporation.
漏 2003 National Semiconductor Corporation
DS200570
www.national.com

LM63CIMAX 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Digital

  • +/- 1 C, +/- 3 C

  • Serial (2-Wire)

  • + 85 C

  • 0 C

  • Reel

  • Temperature Sensor

  • 8 bit, 10 bit+ Sign

  • 3 V to 3.6 V

  • 2500

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