F75393
1.
General Description
The F75393 is a temperature sensor IC with ß compensation and alert signal which is specific designed
for notebook, graphic cards etc. An 11-bit analog-to-digital converter (ADC) was built inside F75393. The
F75393 can monitor two set of temperature which is very 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 thermal transistor or transistor 2N3906. The F75393 also can support new
generational 45nm CPU temperature sensing by varied ß of CPU. 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.
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 application software could be Fintek's application utility, or other management
application software. The F75393 provides SMBus address selection. This chip can be used more than 2 pcs
on the same board by different SMBus address enter. The F75393 is in the green package of 8-pin
MSOP/SOP and powered by 3.3V.
2.
Features
Provide 1 on-chip local and 1 remote temperature sensing
±1
o
C accuarcy on remote channel and
±3
o
C accuarcy on local channel
◇ ±1
C (+60 C to +100 C, remote)
o
o
o
o
o
o
◇
±3
C (+60 C to +100 C, local)
Support new generational CPU temperature sensing with ß compensation
Resistor cancelled function
ALERT# output for SMBus alert
THERM# output for over temperature alert or for system shut down
Programmable THERM# limits and THERM# hysteresis
Programmable alert queue
Programmable limited and setting points(alert threshold) for all monitored items
2 wire SMBus interface and 3VCC operation
8-MSOP Package – F75393M
8-SOP Package – F75393S
The F75393 provides SMBus address ID option by resistor selection and they have the following
SMBus slave address: (Default address is 98h)
Noted: Patented TW 235231 TWI263778
F75393
-1-
May, 2008
V0.16P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
