The F75386 is a temperature sensor IC with fan speed monitoring and controlling function which is specific designed for notebook etc. An 11-bit analog-to-digital converter (ADC) was built inside F75386. The F75386 can provide 2 remote temperature sensor and 1 local temperature sensor. The remote temperature sensorcan be performed by CPU/GPU thermal diode or transistor 2N3906. The F75386 can also provide alert signals for system protection which is optional with fan speed monitoring and controlling. The users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and this chipwill issuewarning messages for system protection if there is something wrong with monitored items. As for fan speed control, the fan speed will be related to temperature variations. The F75386 can use PWM duty cycle output to automatically control fan speed. There are 8 steps PWM duty cycle output for users to program according to the temperature variations.

Through the BIOS or application software, the users can read all the monitored parameters of system all the time. And a pop-up warning can be also activated when the monitored item was out of the proper/pre-setting range. The F75386 is in the green package of 8-pin MSOP/SOP and powered by 3.3V.