ADM1031
V CC
ADM1031
SLAVE
ADDRESS
REGISTER
6
SERIAL BUS
INTERFACE
13 ADD
15 SDA
16 SCL
PWM_OUT1 1
PWM_OUT2 3
TACH2/AIN2 4
TACH1/AIN1 2
D1+ 10
PWM
CONTROLLERS
TACH SIGNAL
CONDITIONING
FAN FILTER
REGISTER
FAN
CHARACTERISTICS
REGISTER
FAN
CONFIG
REGISTER
FAN SPEED
COUNTER
ADDRESS
STATUS
REGISTERS
INTERRUPT
STATUS
REGISTERS
LIMIT
COMPARATOR
VALUE & LIMIT
REGISTERS
14
7
8
INT
(SMBALERT)
THERM
FAN_FAULT
D1 ? 9
D2+ 12
D2 ? 11
BANDGAP
TEMPERATURE
SENSOR
ANALOG
MULTIPLEXER
ADC
2.5 V
BANDGAP
REFERENCE
OFFSET
REGISTERS
CONFIGURATION
REGISTERS
5
GND
Figure 1. Functional Block Diagram
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Positive Supply Voltage (V CC )
Voltage on Any Input or Output Pin
Input Current at Any Pin
Package Input Current
Maximum Junction Temperature (T J max )
Storage Temperature Range
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
ESD Rating ? All Pins
Rating
6.5
? 0.3 to +6.5
? 5
? 20
150
? 65 to +150
215
200
2000
Unit
V
V
mA
mA
? C
? C
? C
V
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.
Table 2. THERMAL CHARACTERISTICS
16-lead QSOP
Package Type
q JA
105
q JC
39
Unit
? C/W
NOTE:
q JA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages.
http://onsemi.com
2
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