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F75363 Datasheet(PDF) 5 Page - Feature Integration Technology Inc. |
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F75363 Datasheet(HTML) 5 Page - Feature Integration Technology Inc. |
5 / 25 page F75363 F75363 July, 2007 V0.27P -1- 1. General Description The F75363 is a temperature sensor IC with PWM duty cycle output which is specific designed for graphic cards etc. An 11-bit analog-to-digital converter (ADC) was built inside F75363. The F75363 can monitor temperature and fan speed which is important for the system to work stably and properly. This chip provides 1 remote temperature sensor and 1 local temperature sensor. The remote temperature sensor can be performed by CPU/GPU thermal diode or transistor 2N3906. The users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and this chip can also issue warning messages for system protection when there is something wrong with monitored items. As for fan speed control, the F75363 can use PWM duty cycle output to automatically control fan speed. The fan speed control is related to temperature variation. There is 8-step lookup table for users to program PWM duty cycle output to control fan speed according to the temperature variation. The F75363 is in the package of 8-pin SOP and powered by 3.3V. 2. Features Provide 1 on-chip local and 1 remote temperature sensing Accuarcy ±1 oC accuarcy on remote channel (+60 oC to +126 oC) ±3 oC accuarcy on local channel(+0 oC to +100 oC) User selectable multi-function pin for either PWM duty cycle output or THERM# signal output function User selectable multi-function pin for either ALERT# output or tachometer input function Automatic fan speed control with user programmable 8-step lookup table Programmable alert queue and limited and setting points(alert threshold) for monitored items 2 wire SMBus interface and ALERT# output for SMBus alert 3VCC operation and in 8-SOP package Patented: TWI235231, TWI263788 |
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