F75308
General Description

The F75308 is a system hardware monitoring and automatic fan speed controlling IC specific designed for server market and etc.The F75308 can monitor several critical hardware parameters of the system, including voltage, temperature (11 bits) and fan speed which are very important for the system to work stably and properly.

An 8-bit analog-to-digital converter (ADC) was built inside F75308. Take F75308CU (64-TQFP) as an example, this chip can monitor up to 15 analog voltage inputs (including 3VCC, 3VSB & VBAT monitoring power), up to 14 fan tachometer inputs, 6 remote temperature sensors, one local sensor & manual temperature value (8 bit) comes from the outside. The remote temperature sensorcan be performed by thermistor, PNP-type transistor 2N3906 and CPU thermal diode. The F75308can provide up to 11 sets of fan speed monitoring and use PWM duty cycle or linear analog outputs to automaticallycontrol fan speed. So the system can operate at the minimum acoustic noise. Users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and this chipcan also issueseveral warning messages for system protection when there is something wrong with the monitoring items.

Besides these functions of monitoring and control, the F75308 also adds support for PECI 3.0 interface (provides 8 sets of addresses 30h~73h, see Bank 3 Index 11h for the detail), Intel IBEX, AMD TSI, case open, LEDs & WDT function. The F75308 meets SMBus 2.0 command to solve the problem of address conflicts by dynamically assigning a new unique address to F75308 after F75308’s UDID is sent.

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 itemswere out of the proper/pre-setting range. The application software isFintek I2C FanControlTM. The F75308 is in the package of 28-pin SSOP, 48-pin LQFP, and 64-pin TQFP.

 

  • FEATURES
  • PACKAGE
  • ATTACHMENTS

64 pin TQFP Feature

  • Monitoring

           -   15 voltage input(3 internal: 3VCC, VBAT, VSB)

               -   Support temperature monitoring via thermistor

               -   Provide one local temperature sensor & manual temperature

               -   Supportbetacompensation

               -  Temperature range: -60ºC~127ºC

               -   PECI 3.0, Intel IBEX & AMD TSI

               -   Support11Output(All fan support multi temperature function)& 14Input Fan

               -   FAN:Control negative temp., support DAC/PWM mode, all fans startup interval is 50ms. After around 2s VCC arises, all FANdefault value

                    (40%) would   change to the register value.

               -  Case open detection function

               -  Support SMBus 2.0with 1 address select pin (selectable 8 address)

  • Alarm Output

              -  Protection signals

  • General

               -   Support32GPIO pins

               -   Support watch dog timer function

               -   4 LEDs via 8 pins (Sink low, tri-state, 0.5Hz, 1 Hz, 0.125Hz, 0.25Hz)

               -   3.3V operation

               -   Package in 64 TQFP

48 pin LQFP Feature

  • Monitoring

           -    11voltage input (3 internal: 3VCC, VBAT, VSB)

           -    Support temperature monitoring via thermistor

           -    Provide one local temperature sensor & manual temperature

           -    Supportbetacompensation

           -    Temperature range: -60ºC~127ºC

           -    PECI 3.0,Intel IBEX& AMD TSI

           -    Support8Output(All fan support multi temperature function)&9Input Fan

           -    FAN:Control negative temp., support DAC/PWM mode, all fans startup interval is 50ms.

                    After around 2s VCC arises, all FAN default value (40%) wouldchange to the register value.

           -    Case open detection function

           -    Support SMBus 2.0 with1address select pin(selectable 8 address)

  • Alarm Output

           -     Protection signals:

  • General

           -    Support21GPIO pins

           -    Support watch dog timer function

           -    4 LEDs (Sink low, tri-state, 0.5Hz, 1 Hz, 0.125Hz, 0.25Hz)

           -    3.3V operation

           -    Package in 48 LQFP

28 pin SSOP Feature

  • Monitoring

           -    6voltage input (3 internal: 3VCC, VBAT, VSB)

           -    Support temperature monitoring via thermistor

           -    Provide one local temperature sensor & manual temperature

           -    Supportbetacompensation

           -    Temperature range: -60ºC~127ºC

           -    PECI 3.0,Intel IBEX& AMD TSI

           -    Support4Output(All fan support multi temperature function)&4Input Fan

           -    FAN:Control negative temp., support DAC/PWM mode, all fans startup interval is 50ms. After around 2s VCC arises,

                all FAN default value (40%) would change to the register value.

           -    Case open detection function

           -    Support SMBus 2.0 with1address select pin(selectable 8 address)

  • Alarm Output

           -    Protection signals:

  • General

           -    Support10GPIO pins

           -    Support watch dog timer function

           -    2 LEDs(Sink low, tri-state, 0.5Hz, 1 Hz, 0.125Hz, 0.25Hz)

           -    3.3V operation

           -    Package in 28-SSOP

28-SSOP, 48-LQFP, 64TQFP Green Package
If you are interested in obtaining the most updated information, please contact us at marketing@fintek.com.tw
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