參數(shù)資料
型號： LM94
廠商： National Semiconductor Corporation
英文描述： TruTherTM Hardware Monitor with PI Loop Fan Control for Server Management
中文描述： TruTherTM硬件監(jiān)控的服務器管理與有價證券循環(huán)風扇控制
文件頁數(shù)： 18/24頁
文件大小： 693K
代理商： LM94
14.0 Absolute Maximum
Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Positive Supply Voltage (V
DD
)
Voltage on Any Digital Input or
Output Pin
6.0V
0.3V to 6.0V
(Except Analog
Inputs)
Voltage on +5V Input
Voltage at Positive Remote
Diode Inputs, AD_IN1, AD_IN2,
AD_IN3, and AD_IN15 Inputs
Voltage at Other Analog Voltage
Inputs
Input Current at Thermal Diode
Negative Inputs
Input Current at any pin (Note 3)
Package Input Current (Note 3)
Maximum Junction Temperature
(Note 9)
(T
JMAX
)
0.3V to +6.667V
0.3V to (V
DD
+ 0.05V)
0.3V to +6.0V
±
1 mA
±
10mA
±
100 mA
150 C
ESD Susceptibility (Note 4)
Human Body Model
Machine Model
Charged Device Model
Storage Temperature
Soldering process must comply with National’s
reflow temperature profile specifications. Refer to
www.national.com/packaging/.
(Note 5)
3 kV
300V
750V
65C to +150C
15.0 Operating Ratings
(Notes 1, 2)
T
MIN
≤
T
A
≤
T
MAX
0C
≤
T
A
≤
+85C
Operating Temperature Range
Nominal Supply Voltage
Supply Voltage Range (V
DD
)
VID0-VID5
Digital Input Voltage Range
3.3V
+3.0V to +3.6V
0.05V to +5.5V
0.05V to
(V
DD
+ 0.05V)
Package Thermal Resistance
(Note 6)
79C/W
DC Electrical Characteristics
The following limits apply for +3.0 V
DC
to +3.6 V
DC
, unless otherwise noted.
Bold face limits apply for T
A
= T
J
over T
MIN
to
T
MAX
of the operating range;
all other limits T
A
= T
J
= 25C unless otherwise noted. T
A
is the ambient temperature of the
LM94; T
J
is the junction temperature of the LM94; T
D
is the junction temperature of the thermal diode.
Symbol
Parameter
Conditions
Typical
(Note 9)
Limits
(Note 10)
Units
(Limits)
POWER SUPPLY CHARACTERISTICS
Power Supply Current
Converting, Interface and
Fans Inactive, Peak
Current
Converting, Interface and
Fans Inactive, Average
Current
2
2.75
mA (max)
1.6
mA
Power-On Reset Threshold Voltage
2
1.6
2.7
V (min)
V (max)
TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS
Local Temperature Accuracy Over Full Range
0C
≤
T
A
≤
85C
T
A
= +55C
±
2
±
1
1
±
3
±
2.5
C (max)
C (max)
C
Local Temperature Resolution
Remote Thermal Diode Temperature Accuracy
Over Full Range; targeted for a typical Pentium
processor on 90 nm or 65 nm process(Note 8)
0C
≤
T
A
≤
85C
and 0C
≤
T
D
≤
100C
0C
≤
T
A
≤
85C
and T
D
=70C
0C
≤
T
A
≤
85C
and 25C
≤
T
D
≤
70C
±
3
C (max)
±
2.5
C (max)
Remote Thermal Diode Temperature Accuracy;
targeted for a typical Pentium processor on 90nm
or 65nm process (Note 8)
Remote Temperature Resolution
Thermal Diode Source Current
±
1
C
1
C
High Level
Low Level
172
10.75
16
230
μA (max)
μA
Thermal Diode Current Ratio
Total Monitoring Cycle Time
T
C
100
ms (max)
L
www.national.com
18
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