0
ACTIVE
Local sensor accuracy (max) |
3 |
Type |
Fan Controller |
Operating temperature range (°C) |
0 to 125 |
Supply voltage (min) (V) |
3 |
Interface type |
SMBus |
Supply voltage (max) (V) |
3.6 |
Features |
ALERT, PWM output, Tachometer |
Supply current (max) (µA) |
2000 |
Temp resolution (max) (bps) |
8 |
Remote channels (#) |
1 |
Addresses |
1 |
Rating |
Catalog |
SOIC (D)-8-29.4 mm² 4.9 x 6
Intel is a trademark of Texas Instruments. Pentium is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
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.
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.
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