The LM63CIMA/NOPB is a Remote Diode Temperature Sensor with integrated fan control. The device accurately measures its own temperature and 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 0.13µm 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. 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.

• Accurately senses diode-connected 2N3904 transistors or thermal diodes on board large processors
• Accurately senses its own temperature
• Acoustic fan noise reduction with user-programmable 8-step lookup table
• Multi-function, user-selectable pin for either ALERT(bar) output or tachometer input functions
• Tachometer input for measuring fan RPM
• Smart-Tach modes for measuring RPM of fans with pulse-width-modulated power
• 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 pin-out
• LM86-Compatible register set
• Green product and no Sb/Br

Полупроводники - Микросхемы\Микросхемы Датчиков\Датчики Температуры

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