ADM1034ARQZ-REEL Просмотр технического описания (PDF) - ON Semiconductor
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ADM1034ARQZ-REEL Datasheet PDF : 39 Pages
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ADM1034
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
Positive Supply Voltage (VCC)
−0.3, +6.5
V
Voltage on Any Input or Output Pin except FAN_FAULT and LOCATION
−0.3 to VDD +6.5
V
Voltage on FAN_FAULT (Note 1)
VCC
Voltage on LOCATION
VCC + 0.3
V
Input Current at Any Pin
±20
mA
Maximum Junction Temperature (TJ max)
Storage Temperature Range
150
°C
−65 to +150
°C
Lead Temperature, Soldering (10 s)
300
°C
IR Reflow Peak Temperature
220
°C
ESD Rating − All Pins
1500
V
1. During powerup the voltage on FAN_FAULT should not be higher than VCC.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.
THERMAL CHARACTERISTICS
16−Lead QSOP Package
Parameter
Rating
qJA = 150°C/W, qJC = 39°C/W
PIN ASSIGNMENT
Pin No.
Mnemonic
1
DRIVE1
2
TACH1
3
DRIVE2
4
TACH2
5
GND
6
VCC
7
THERM
8
FAN_FAULT/REF
9
D1−
10
D1+
11
D2−
12
D2+
13
LOCATION
14
ALERT
15
SDA
16
SCL
Description
DRIVE1 Pin Drives Fan 1. Open−drain output. Requires a pullup resistor.
Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
DRIVE2 Pin Drives Fan 2. Open−drain output. Requires a pullup resistor.
Fan 2 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
Ground for Analog and Digital Circuitry.
Power. Can be powered by 3.3 V standby power if monitoring in low power states is required.
Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT
output of an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output).
FAN_FAULT: Open−Drain Output. Asserted low when one or both fans stall. Requires a pullup
resistor to VCC. REF: Analog Input Reference for the THERM Input.
Cathode Connection for the First Thermal Diode or Diode−Connected Transistor.
Anode Connection for the First Thermal Diode or Diode−Connected Transistor.
Cathode Connection for the Second Thermal Diode or Diode−Connected Transistor.
Anode Connection for the Second Thermal Diode or Diode−Connected Transistor.
8−Level Analog Input. Used to determine the correct SMBus version and the SMBus address (in
fixed and discoverable mode) and to set the LLL bits in the UDID (in ARP−capable mode).
Open−Drain Output. SMBusALERT pin. Alerts the system in the case of out−of−limit events, such as
over temperature. Can be configured as sticky SMBus mode or comparator mode.
Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires pullup resistor if
not provided elsewhere in the system.
Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires pullup resistor if not
already provided in the system.
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