ADT7475_1110 ONSEMI [ON Semiconductor], ADT7475_1110 Datasheet - Page 30

• Manufacturer Part Number: ADT7475_1110
• Description: dbCOOL Remote Thermal Monitor and Fan Controller
• Manufacturer: ONSEMI [ON Semiconductor]

Recommended Implementation 2
system designer with the following features:
•
•
•
•
Configuring the ADT7475 as in Figure 45 provides the
Three PWM outputs for fan control of up to three fans.
(All three fans can be individually controlled.)
Three TACH fan speed measurement inputs.
V
CPU core voltage measurement (V
CC
measured internally through Pin 3.
CHASSIS
CHASSIS
FRONT
REAR
FAN
FAN
TEMPERATURE
AMBIENT
CORE
Figure 45. Recommended Implementation 2
).
TACH2
PWM2
PWM3
TACH3
D1+
D1–
http://onsemi.com
ADT7475
GND
30
THERM
TACH1
•
•
•
PWM1
SDA
SCL
D2+
D2–
CPU temperature measured using the Remote 1
temperature channel.
Ambient temperature measured through the Remote 2
temperature channel.
Bidirectional THERM pin that allows the monitoring of
PROCHOT output from an Intel Pentium 4 processor,
for example, or can be used as an overtemperature
THERM output.
PROCHOT
CPU FAN
ICH
CPU