ADT7462ACPZ-REEL ON Semiconductor, ADT7462ACPZ-REEL Datasheet - Page 3

• Manufacturer Part Number: ADT7462ACPZ-REEL
• Description: IC TEMP/VOLT MONITOR 32-LFCSP
• Manufacturer: ON Semiconductor

Specifications of ADT7462ACPZ-REEL

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, 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 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Number Of Voltages Monitored: 1
• Monitored Voltage: 0.9 V to 12 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 3 V
• Supply Current (typ): 4000 uA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN ASSIGNMENT
Pin
No.
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
VID0/GPIO1/TACH1
VID1/GPIO2/TACH2
VID2/GPIO3/TACH3
VID3/GPIO4/TACH4
D1−/SCSI_TERM1
D3−/SCSI_TERM2
D3+/+1.25V/+0.9V
D1+/+2.5V/+1.8V
TACH5/+12V1
TACH6/+12V2
PWM4/+3.3V
TACH7/+5V
Mnemonic
RESET
ALERT
GND
SDA
ADD
V
SCL
D2+
D2−
CC
VID0: Digital Input (Open Drain). Voltage supply readouts from CPU. This value
is read in to the VID value register (0x97).
GPIO1: Open−Drain I/O. General−purpose input/output.
TACH1: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 1.
VID1: Digital Input (Open Drain). Voltage supply readouts from CPU. This value
is read in to the VID value register (0x97).
GPIO2: Open−Drain I/O. General−purpose input/output.
TACH2: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 2.
VID2: Digital Input (Open Drain). Voltage supply readouts from CPU. This value
is read in to the VID value register (0x97).
GPIO3: Open−Drain I/O. General−purpose input/output.
TACH3: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 3.
VID3: Digital Input (Open Drain). Voltage supply readouts from CPU. This value
is read in to the VID value register (0x97).
GPIO4: Open−Drain I/O. General−purpose input/output.
TACH4: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 4.
Power Supply. Can be powered by 3.3 V standby if monitoring in low power
states is required. The ADT7462 can also be powered from a 5.0 V supply.
Ground Pin.
TACH5: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 5.
+12V1: Analog Input. Monitors 12 V Power Supply 1. Attenuators switched on by
default.
TACH6: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 6.
+12V2: Analog Input. Monitors 12 V Power Supply 2. Attenuators switched on by
default.
Digital Input (Open Drain). SMBus serial clock input. Requires SMBus pullup.
Digital I/O (Open Drain). SMBus bidirectional serial data. Requires SMBus
pullup.
The state of this pin on powerup determines the SMBus device address.
Active Low Open−Drain Digital Output. Requires 10 kW typical pullup. The
ALERT pin is used to signal out−of−limit comparisons of temperature, voltage,
and fan speed. This is compatible with SMBus ALERT.
PWM4: Digital Output (Open Drain). Requires 10 kW typical pullup. Pulse−width
modulated output to control the speed of Fan 4.
+3.3V: Analog Input. Monitors 3.3 V power supply.
Active Low Open−Drain Digital I/O. Power−on reset, 5 mA driver (weak 100 kW
pullup), active low output (100 kW pullup) with a 180 ms typical pulse width.
RESET is asserted whenever V
asserted for approximately 180 ms after V
14 also functions as an active low RESET input and resets all unlocked registers
to their default values.
D1+: Anode Connection to Thermal Diode 1.
+2.5V: Monitors 2.5 V analog input.
+1.8V: Monitors 1.8 V analog input.
D1−: Cathode Connection to Thermal Diode 1.
SCSI_TERM1: Digital Input, SCSI Termination 1.
Anode Connection to Thermal Diode 2.
Cathode Connection to Thermal Diode 2.
D3+: Anode Connection to Thermal Diode 3.
+1.25V: Monitors 1.25 V analog input.
+0.9V: Monitors 0.9 V analog input.
D3−: Cathode connection to Thermal Diode 3.
SCSI_TERM2: Digital Input, SCSI Termination 2.
TACH7: Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 7.
+5V: Analog Input. Monitors 5.0 V power supply.
http://onsemi.com
3
CC
Description
is below the reset threshold. It remains
CC
rises above the reset threshold. Pin
Default
RESET
TACH1
TACH2
TACH3
TACH4
TACH5
TACH6
ALERT
TACH7
PWM4
POR
GND
ADD
SCL
SDA
V
D1+
D1−
D2+
D2−
D3+
D3−
CC