LM2940/LM2940C
Output Voltage (V
O
)
Parameter
Dropout Voltage
Short Circuit
Current
Maximum Line
Transient
R
O
= 100Ω
T
≤
100 ms
LM2940
LM2940C
Reverse Polarity
DC Input Voltage
Reverse Polarity
Transient Input
Voltage
R
O
= 100Ω
LM2940
LM2940C
R
O
= 100Ω
T
≤
100 ms
LM2940
LM2940C
−75
−55
−30
−30
75
55
I
O
= 1A
I
O
= 100 mA
(Note 7)
Conditions
Typ
0.5
110
1.9
9V
LM2940
Limit
(Note 5)
0.8/1.0
150/200
1.6
Typ
0.5
110
1.9
10V
LM2940
Limit
(Note 5)
0.8/1.0
150/200
1.6
Units
V
MAX
mV
MAX
A
MIN
60/60
45
−15/−15
−15
75
60/60
V
MIN
−30
−15/−15
V
MIN
−50/−50
−45/−45
−75
−50/−50
V
MIN
Electrical Characteristics
V
IN
= V
O
+ 5V, I
O
= 1A, C
O
= 22 μF,
unless otherwise specified.
Boldface limits apply over the entire operating temperature
range of the indicated device.
All other specifications apply for T
A
= T
J
= 25°C.
Output Voltage (V
O
)
Parameter
Conditions
Typ
12V
LM2940
Limit
(Note 5)
11.64/11.40
12.36/12.60
Line Regulation
Load Regulation
V
O
+ 2V
≤
V
IN
≤
26V,
I
O
= 5 mA
50 mA
≤
I
O
≤
1A
LM2940, LM2940/883
LM2940C
Output
Impedance
Quiescent
Current
100 mADC and
20 mArms,
f
O
= 120 Hz
V
O
+2V
≤
V
IN
≤
26V,
I
O
= 5 mA
LM2940, LM2940/883
LM2940C
V
IN
= V
O
+ 5V, I
O
= 1A
Output Noise
Voltage
10 Hz − 100 kHz,
I
O
= 5 mA
10
10
30
360
15/20
15
45/60
50/60
1000/1000
15/20
10
30
450
15
45/60
50/60
1000/1000
mA
MAX
μV
rms
15/20
mA
MAX
55
55
80
120/200
120
1000/1000
120/190
70
100
150
1000/1000
mΩ
150/240
mV
MAX
20
120
LM2940/833
Limit
(Note 6)
11.64/11.40
12.36/12.60
75/120
20
Typ
15V
LM2940
Limit
(Note 5)
14.55/14.25
15.45/15.75
150
LM2940/833
Limit
(Note 6)
14.55/14.25
15.45/15.75
95/150
Units
13.6V
≤
V
IN
≤
26V
Output Voltage
5 mA
≤
I
O
≤
1A
12.00
15.00
16.75V
≤
V
IN
≤
26V
V
MIN
V
MAX
mV
MAX
5
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