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
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 TDIODE JUNCTION=TLM63CIM-16 + 16°C
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM63CIMA | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
LM63CIMAX | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
LM63DIMA | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
LM63DIMAX | CMOS7 | 0 | 18406 | 0 | 0 | 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 |
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| SensorEval Software for Thermal Mangement Products |
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View |
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[Information as of 8-Nov-2009]
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