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LM3822MM-2.0 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM3822MM-2.0
Descripción Electrónicos  Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3822MM-2.0 Datasheet(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
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)
5A
Junction Temperature Range
−40˚C to +85˚C
Electrical Characteristics Typical numbers are at 25˚C and represent the most likely parametric norm.
Specifications in standard type face are for T
J = 25˚C and those with boldface type apply over full operating temperature
ranges.
LM3822-1.0
SENSE+V
DD = 3.6V 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)
1.0A current
1.0
A
0.98 / 0.96
A (min)
1.02 / 1.04
A (max)
e
n
Effective Output Noise (rms)
2
mA
LM3822-2.0
SENSE+V
DD = 3.6V 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)
2.0A current (Note 8)
2.0
A
1.94 / 1.90
A (min)
2.06 / 2.10
A (max)
e
n
Effective Output Noise (rms)
6
mA
Common Device Parameters
Unless otherwise specified, V
DD = 3.6V 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
95
µA
150
µA (max)
I
Q2
Quiescent Current
Shutdown Mode, SD = low
1.8
µA
10
µA (max)
D
RES
PWM Resolution
0.1
%
t
S
Sampling Time
50
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
1.3
V
1.8
V (min)
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