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LM3813 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM3813
Giải thích chi tiết về linh kiện  Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output
PDF  14 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM3813 bảng dữ liệu(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Absolute Maximum Supply Voltage
5.5V
Power Dissipation
(Note 2)
ESD Susceptibility (Note 3)
1.5 kV
Sense Current (peak, for 200 msec) (Note 4)
10A
Sink Current for PWM pin
1mA
Voltage on Pin 5
5.25V
Maximum Junction Temperature
150˚C
Storage Temperature
−65˚C to +150˚C
Lead Temperature (Soldering, 10 sec)
260˚C
Operating Ratings (Note 1)
Input Voltage
2.0V to 5.25V
Sense Current (continuous) (Note 4)
7A
Junction Temperature Range
−40˚C to +125˚C
Electrical Characteristics
LM3812-1.0, LM3813-1.0
V
DD = 5.0V for the following specifications. Supply bypass capacitor is 1 µF and filter capacitor is 0.1 µF.
Symbol
Parameter
Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
ACC
Average Current Accuracy
(Note 7)
at 0.9A current
0.9
A
0.882 / 0.864
A (min)
0.918 / 0.936
A (max)
e
n
Effective Output Noise (rms)
2
mA
LM3812-7.0, LM3813-7.0
V
DD = 5.0V for the following specifications. Supply bypass capacitor is 1 µF and filter capacitor is 0.1 µF.
Symbol
Parameter
Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
ACC
Average Current Accuracy
(Note 7)
at 2.5A current (Note 8)
2.5
A
2.400 / 2.350
A (min)
2.600 / 2.650
A (max)
e
n
Effective Output Noise (rms)
20
mA
Common Device Parameters
Unless otherwise specified, V
DD = 5.0V for the following specifications. Supply bypass capacitor is 1 µF and filter capacitor is
0.1 µF.
Symbol
Parameter
Conditions
Typ
(Note 5)
Limit
(Note 6)
Units
I
Q1
Quiescent Current
Normal Mode, SD = high
100
µA
160
µA (max)
I
Q2
Quiescent Current
Shutdown Mode, SD = low
2.5
µA
10
µA (max)
D
RES
PWM Resolution
0.1
%
t
S
Sampling Time
52
ms
40
ms (min)
80
ms (max)
f
P
Frequency of PWM Waveform
20
Hz
12.5
Hz (min)
25
Hz (max)
V
TH
Threshold High Level for SD
1.2
V
1.8
V (min)
V
TL
Threshold Low Level for SD
1.3
V
0.7
V (max)
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