ADT7473
*ADDREN
*ADDR SELECT
SCL
SDA
SMBALERT
ADT7473/ADT7473 ? 1
SMBus
ADDRESS SELECTION
SERIAL BUS
INTERFACE
PWM1
PWM2
PWM3
PWM REGISTERS
AND
CONTROLLERS
(HF & LF)
ACOUSTIC
ENHANCEMENT
CONTROL
AUTOMATIC
FAN SPEED
CONTROL
ADDRESS
POINTER
REGISTER
DYNAMIC
TACH1
TACH2
FAN SPEED
T MIN
CONTROL
PWM
CONFIGURATION
REGISTERS
TACH3
TACH4
COUNTER
PERFORMANCE
MONITORING
INTERRUPT
MASKING
*THERM_LATCH
V CC to ADT7473/ADT7473 ? 1
THERMAL
PROTECTION
INTERRUPT
STATUS
REGISTERS
V CC
D1+
D1 ?
D2+
D2 ?
V CCP
SRC
BAND GAP
TEMP. SENSOR
INPUT
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
10-BIT
ADC
BAND GAP
REFERENCE
LIMIT
COMPARATORS
VALUE AND
LIMIT
REGISTERS
* PIN FUNCTION OLNY AVAILABLE ON THE ADT7473 ? 1
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
IR Reflow Peak Temperature
Lead Temperature (Soldering, 10 sec)
ESD Rating
Rating
3.6
? 0.3 to +3.6
? 5.0
? 20
150
? 65 to +150
260
300
1,500
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.
http://onsemi.com
2
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