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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LM63 Datenblatt(PDF) 1 Page - National Semiconductor (TI) |
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LM63 Datenblatt(HTML) 1 Page - National Semiconductor (TI) |
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1 / 28 page  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 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’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 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. Features n Accurately senses diode-connected 2N3904 transistors or thermal diodes on-board large processors or ASIC’s 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 n 10 bit plus sign remote diode temperature data format, with 0.125˚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 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 j Local Temp Accuracy (includes quantization error) Ambient Temp Max Error 25˚C to 125˚C ±3.0˚C j Supply Voltage 3.0 V to 3.6 V j Supply Current 1.3 mA (typ) 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® and Pentium® are registered trademarks of Intel Corporation. May 2003 © 2003 National Semiconductor Corporation DS200570 www.national.com |
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Ähnliche Beschreibung - LM63 |
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