The LM96163 has remote and local temperature sensors with integrated fan control that includes TruTherm BJT transistor beta compensation technology for remote diode sensing. The LM96163 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 LM96163 has an offset register to correct for errors caused by different non-ideality factors of other thermal diodes.
The LM96163 also features an integrated, pulse-width-modulated (PWM), open-drain fan control output. Fan speed depends on a combination of the remote temperature reading, the lookup table and register settings. The 12-step Lookup Table (LUT) enables the user to program a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise. In addition a fully programmable ramping function has been added to allow smooth transitions between LUT setpoints.
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|Part number||Order||Device type||Interface||Local sensor accuracy (Max) (+/- C)||Temp resolution (Max) (bits)||Operating temperature range (C)||Supply voltage (Min) (V)||Supply voltage (Max) (V)||Supply current (Max) (uA)||Features||Remote channels (#)||Addresses||Rating||Package Group||Package size: mm2:W x L (PKG)|
||Fan Controller||I2C, SMBus, 2-Wire||3||11||-40 to 125||3||3.6||825||
1 tachometer input
remote diode beta compensation
|1||1||Catalog||WSON | 10||10WSON: 9 mm2: 3 x 3 (WSON | 10)|