W83627EG Nuvoton Technology Corporation of America, W83627EG Datasheet - Page 55

• Manufacturer Part Number: W83627EG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(1) If the temperature still exceeds the high limit (ex: 58°C), Fan output will increase slowly. If the fan
has been operating in its fully speed but the temperature still exceeds the high limit(ex: 58°C), a
warning message will be issued to protect the system.
(2) If the temperature goes below the high limit (ex: 58°C), but above the low limit (ex: 52°C), the fan
speed will be fixed at the current speed because the temperature is in the target area(ex: 52 °C ~
58°C).
(3) If the temperature goes below the low limit (ex: 52°C), Fan output will decrease slowly to 0 until the
temperature exceeds the low limit.
In other words, If “current temperature” > “High Limit”, increase fan speed;
Figure 7.6 PWM fan mode and Figure 7.7 DC fan mode illustrate the Thermal Cruise mode
If “current temperature” < “Low Limit”, decrease fan speed;
Otherwise, keep the fan speed.
W83627EHF/EF, W83627EHG/EG
- 44 -
Figure 7.6