ADT7473ARQZ-1R7 ON Semiconductor, ADT7473ARQZ-1R7 Datasheet - Page 33

• Manufacturer Part Number: ADT7473ARQZ-1R7
• Description: IC THERM MON FAN CTLR 16-QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7473ARQZ-1R7

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Full Temp Accuracy: +/- 0.5 C
• Digital Output - Bus Interface: Serial (3-Wire, 4-Wire)
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Recommended Implementation 1
system designer with the following features:
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Configuring the ADT7473, as in Figure 49 provides the
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
VRM temperature using local temperature sensor.
CC
measured internally through Pin 4.
CORE
Figure 49. Recommended Implementation 1
).
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CPU temperature measured using the Remote 1
temperature channel.
Ambient temperature measured through the Remote 2
temperature channel.
Bidirectional THERM pin allows the monitoring of
PROCHOT output from an Intel Pentium 4 processor,
for example, or can be used as an overtemperature
THERM output.
SMBALERT system interrupt output.