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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|No. of Temperature Sensors|
|Operating Temperature Range (C)|
|Temperature Sensor Accuracy (C)|
|Temperature Sensor Resolution (C)|
|PWM Duty Cycle Resolution (bits)|
|Fan Speed Measurement Accuracy (%)|
|Fan Control Method|
|Fan Control Output(s)|
|TruTherm(TM) Beta Compensation|
|Fan Speed Inputs|
|Interrupt Outputs (Count)|
|Quiescent Current (mA)|
|-40 to 125|
| 0.75C max for 50 to 105 |
1.5C max for 40 to 125
3C max for 25C to 125C
| PWM |
|Lookup Table 12 point|