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LM2940LDX-15 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM2940LDX-15
Descripción Electrónicos  1A Low Dropout Regulator
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2940LDX-15 Datasheet(HTML) 5 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
V
IN =VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera-
ture range of the indicated device. All other specifications apply for T
A =TJ = 25˚C.
Output Voltage (V
O)5V
8V
Units
LM2940
LM2940/883
LM2940
LM2940/883
Parameter
Conditions
Typ
Limit
Limit
Typ
Limit
Limit
(Note 4)
(Note 5)
(Note 4)
(Note 5)
Maximum Line
R
O = 100
V
MIN
Transient
LM2940, T
≤ 100 ms
75
60/60
75
60/60
LM2940/883, T
≤ 20 ms
40/40
40/40
LM2940C, T
≤ 1 ms
5545
5545
Reverse Polarity
R
O = 100
DC Input Voltage
LM2940, LM2940/883
−30
−15/−15
−15/−15
−30
−15/−15
−15/−15
V
MIN
LM2940C
−30
−15
−30
−15
Reverse Polarity
R
O = 100
Transient Input
LM2940, T
≤ 100 ms
−75
−50/−50
−75
−50/−50
V
MIN
Voltage
LM2940/883, T
≤ 20 ms
−45/−45
−45/−45
LM2940C, T
≤ 1 ms
−55
−45/−45
Electrical Characteristics
V
IN =VO + 5V, IO = 1A, CO = 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera-
ture range of the indicated device. All other specifications apply for T
A =TJ = 25˚C.
Output Voltage (V
O)
9V
10V
Units
Parameter
Conditions
Typ
LM2940
Typ
LM2940
Limit
Limit
(Note 4)
(Note 4)
10.5V
≤ V
IN
≤ 26V
11.5V
≤ V
IN
≤ 26V
Output Voltage
5 mA
≤ I
O
≤1A
9.00
8.73/8.55
10.00
9.70/9.50
V
MIN
9.27/9.45
10.30/10.50
V
MAX
Line Regulation
V
O +2V
≤ V
IN
≤ 26V,
20
90
20
100
mV
MAX
I
O =5 mA
Load Regulation
50 mA
≤ I
O
≤ 1A
LM2940
60
90/150
65
100/165
mV
MAX
LM2940C
60
90
Output Impedance
100 mADC and
20 mArms,
60
65
m
f
O = 120 Hz
Quiescent
V
O +2V
≤ V
IN < 26V,
Current
I
O =5 mA
LM2940
10
15/20
10
15/20
mA
MAX
LM2940C
10
15
V
IN =VO + 5V, IO = 1A
30
45/60
30
45/60
mA
MAX
Output Noise
10 Hz − 100 kHz,
270
300
µV
rms
Voltage
I
O =5 mA
Ripple Rejection
f
O = 120 Hz, 1 Vrms,
I
O = 100 mA
LM2940
64
52/46
63
51/45
dB
MIN
LM2940C
64
52
Long Term
Stability
34
36
mV/
1000 Hr
Dropout Voltage
I
O = 1A
0.5
0.8/1.0
0.5
0.8/1.0
V
MAX
I
O = 100 mA
110
150/200
110
150/200
mV
MAX
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5


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