ADT7463ARQZ ON Semiconductor, ADT7463ARQZ Datasheet - Page 8

• Manufacturer Part Number: ADT7463ARQZ
• Description: IC REMOTE THERMAL CTRLR 24-QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7463ARQZ

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 120°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 120°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADT7463
RECOMMENDED IMPLEMENTATION
Configuring the ADT7463 as in Figure 2 allows the systems
designer the following features:
•
•
•
•
•
•
•
Six VID inputs (VID0 to VID5) for VRM10 support.
Two PWM outputs for fan control of up to three fans
(the front and rear chassis fans are connected in parallel).
Three TACH fan speed measurement inputs.
V
CPU core voltage measurement (V
2.5 V measurement input used to monitor CPU current
(connected to V
This is used to determine CPU power consumption.
5 V measurement input.
CC
measured internally through Pin 4.
COMP
output of ADP316x VRM controller).
FRONT
CHASSIS
FAN
REAR
CHASSIS
FAN
AMBIENT
TEMPERATURE
CONTROLLER
ADP316x
CORE
VRM
).
Figure 2. Recommended Implementation
V
COMP
Rev. 4 | Page 8 of 52 | www.onsemi.com
TACH2
PWM3
TACH3
D1+
D1–
3.3VSB
5V
12V/VID5
CURRENT
V
CORE
–8–
ADT7463
VID[0:4]/VID[0:5]
GND
•
•
•
•
•
•
See the AN-612 ADT7463 Configuration application note for more
information and register settings for all possible configurations
(www.analog.com/UploadedFiles/Application_Notes/408599520AN612_0.pdf).
SMBALERT
VRM temperature uses local temperature sensor.
CPU temperature measured using Remote 1 temperature
channel.
Ambient temperature measured through Remote 2 temperature
channel.
If not using VID5, this pin can be reconfigured as the 12 V
monitoring input.
Bidirectional THERM pin. Allows Intel Pentium 4 PROCHOT
monitoring and can function as an overtemperature THERM
output.
SMBALERT system interrupt output.
THERM
TACH1
PWM1
SDA
SCL
D2+
D2–
5(VRM9)/6(VRM10)
PROCHOT
REV. C