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| 型號(hào)： | LM2940K-5.0-MIL |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| 中文描述： | 三端固定電壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 3/17頁(yè) |
| 文件大?。?/td> | 409K |
| 代理商： | LM2940K-5.0-MIL |
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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.
LM2940S, T, MP
≤
100 ms
LM2940CS, T
≤
1 ms
Internal Power Dissipation
(Note 2)
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature, Time for Wave Soldering
TO-220 (T) Package
60V
45V
Internally Limited
150C
65C
≤
T
J
≤
+150C
260C, 10s
TO-263 (S) Package
SOT-223 (MP) Package
ESD Susceptibility (Note 3)
260C, 4s
260C, 4s
2 kV
Operating Conditions
(Note 1)
Input Voltage
Temperature Range
LM2940T, LM2940S
LM2940CT, LM2940CS
LM2940IMP
LM2940J, LM2940WG
26V
40C
≤
T
J
≤
125C
0C
≤
T
J
≤
125C
40C
≤
T
J
≤
85C
55C
≤
T
J
≤
125C
Electrical Characteristics
V
= V
+ 5V, I
= 1A, C
= 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
= T
J
= 25C.
Output Voltage (V
O
)
5V
LM2940
Parameter
Conditions
Typ
Limit
(Note 4)
6.25V
≤
V
IN
≤
26V
Output Voltage
5 mA
≤
I
O
≤
1A
5.00
4.85/
4.75
5.15/
5.25
Line Regulation
V
O
+ 2V
≤
V
IN
≤
26V,
20
50
I
O
= 5 mA
Load Regulation
50 mA
≤
I
O
≤
1A
LM2940, LM2940/883
35
50/
80
LM2940C
35
50
Output
100 mADC and
Impedance
20 mArms,
35
f
O
= 120 Hz
Quiescent
V
O
+2V
≤
V
IN
≤
26V,
Current
I
O
= 5 mA
LM2940, LM2940/883
10
15/
20
LM2940C
10
15
V
IN
= V
O
+ 5V,
30
45/
60
I
O
= 1A
Output Noise
10 Hz 100 kHz,
150
Voltage
I
O
= 5 mA
Ripple Rejection
f
O
= 120 Hz, 1 V
rms
,
I
O
= 100 mA
LM2940
72
60/
54
LM2940C
72
60
f
O
= 1 kHz, 1 V
rms
,
I
O
= 5 mA
Long Term
20
Stability
Dropout Voltage
I
O
= 1A
0.5
0.8/
1.0
I
O
= 100 mA
110
150/
200
Short Circuit
Current
8V
Units
LM2940/883
Limit
(Note 5)
LM2940
Limit
(Note 4)
9.4V
≤
V
IN
≤
26V
7.76/
7.60
8.24/
8.40
80
LM2940/883
Limit
(Note 5)
Typ
4.85/
4.75
5.15/
5.25
40/
50
8.00
7.76/
7.60
8.24/
8.40
50/
80
V
MIN
V
MAX
mV
MAX
20
50/
100
55
55
80/
130
80
80/
130
mV
MAX
1000/
1000
55
1000/
1000
m
15/
20
10
15/
20
15/
20
mA
MAX
50/
60
30
45/
60
50/
60
mA
MAX
700/
700
240
1000/
1000
μV
rms
66
66
54/
48
54
dB
MIN
60/
50
54/
48
dB
MIN
32
mV/
1000 Hr
V
MAX
mV
MAX
0.7/
1.0
150/
200
0.5
110
0.8/
1.0
150/
200
0.7/
1.0
150/
200
(Note 6)
1.9
1.6
1.5/
1.3
1.9
1.6
1.6/
1.3
A
MIN
L
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