W83792AG Nuvoton Technology Corporation of America, W83792AG Datasheet - Page 30

• Manufacturer Part Number: W83792AG
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83792AG

• Output Type: I²C™
• Function: Hardware Monitor
• Topology: ADC, Fan Control, Register Bank
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Temperature Sensor Function: Temp Sensor
• Resolution: 10b
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

programmed by BIOS or application software.
7.7.4
W83792D/G provide 4 temperature point each can auto control PWM or DC fan mode. Each Temp
maps
Different fan out level, the relationship is shown as follow:
Of course, Smart Fan control system can be disabled and the fan speed control algorithm can be
Fan Duty Cycle 100%
Non-Stop Duty Cycle
Smart FanTM II Control
Fan Duty Cycle Level 3
Fan Duty Cycle Level 2
Fan Duty Cycle Level 1
PWM
Duty
Cycle
58`C
55`C
52`C
Fan Duty Cycle
100
50
0
Fan Start = 20%
A
Temp. Tolerance
Temp. 1
Figure 8. Smart Fan II behavior
Fan Stop = 10%
Figure 7-2.
- 24 -
Temp.2
B
Temp.3
C
Fan Start = 20%
W83792AD/AG/D/G
Temp.4
D
Temperature