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LM63 - Accurate Remote Diode Digital Temperature Sensor

Datasheet Summary

Description

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

Features

  • an integrated, pulse-widthmodulated (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˚C resolution n SMBus 2.0 compatible interface, supports.

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Datasheet Details

Part number LM63
Manufacturer National Semiconductor
File Size 339.89 KB
Description Accurate Remote Diode Digital Temperature Sensor
Datasheet download datasheet LM63 Datasheet
Additional preview pages of the LM63 datasheet.

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Full PDF Text Transcription

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LM63 ± 1˚C/ ± 3˚C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control May 2003 LM63 ± 1˚C/ ± 3˚C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control 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 diodeconnected 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.
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