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2-Channel Temperature Monitor with Dual Automatic
PWM Fan-Speed Controller and Five GPIOs
2  _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +5.5V, T
A
= -40癈 to +125癈, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25癈.)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND..............................................................-0.3V to +6V
OT, SMBDATA, SMBCLK, PWMOUT_,
GPIO_ to GND......................................................-0.3V to +6V
DXP_ to GND ..........................................-0.3V to + (V
CC
+ 0.3V)
DXN to GND ..........................................................-0.3V to +0.8V
PRESET_ to GND ....................................-0.3V to + (V
CC
+ 0.3V)
SMBDATA, OT, PWMOUT_ Current....................-1mA to +50mA
DXN Current .......................................................................?mA
ESD Protection (all pins, Human Body Model) ..................2000V
Continuous Power Dissipation (T
A
= +70癈)
20-Pin QSOP (derate 9.1mW/癈 above +70癈).......... 727mW
20-Pin TQFN (derate 34.5mW/癈 above +70癈) .......2759mW
Operating Temperature Range .........................-40癈 to +125癈
Junction Temperature......................................................+150癈
Storage Temperature Range ............................-65癈 to +150癈
Lead Temperature (soldering, 10s).................................+300癈
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage Range
V
CC
+3.0
+5.5
V
Operating Current
I
S
Interface inactive, ADC active
0.5
1
mA
+25癈 d T
R
 d +125癈,
T
A
 = 60癈
?
V
CC
 = 3.3V
0癈 d T
R
 d +145癈,
+25癈 d T
A
 d +100癈
?
External Temperature Error,
V
CC
 = 3.3V
0癈 d T
R
 d +145癈,
0癈 d T
A
 d +125癈
?
癈
+25癈 d T
R
 d +100癈
?.5
Internal Temperature Error
V
CC
 = +3.3V
0癈 d T
A
 d +125癈
?
癈
1
癈
Temperature Resolution
8
Bits
Conversion Time
200
250
300
ms
PWM Frequency Tolerance
(Note 1)
-20
+20
%
High level
80
100
120
Remote-Diode Sourcing Current
Low level
8
10
12
礎
DXN Source Voltage
0.7
V
DIGITAL INPUTS AND OUTPUTS
Output Low Voltage (Sink Current)
(OT, GPIO_, SMBDATA, PWMOUT_)
V
OL
I
OUT
 = 6mA
0.4
V
Output High Leakage Current
(OT, GPIO_, SMBDATA, PWMOUT_)
I
OH
1
礎
V
CC
 = 3V to 3.6V
0.8
Logic-Low Input Voltage (SMBDATA,
SMBCLK, PRESET_, GPIO_)
V
IL
V
CC
 = 3.6V to 5.5V
0.8
V
V
CC
 = 3V to 3.6V
2.1
Logic-High Input Voltage (SMBDATA,
SMBCLK, PRESET_, GPIO_)
V
IH
V
CC
 = 3.6V to 5.5V
2.1
V
Input Leakage Current
1
礎
Input Capacitance
C
IN
5
pF
SMBus TIMING
Serial Clock Frequency
f
SCLK
100
kHz
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