LM2940/LM2940C
Output Voltage (V
O
)
Parameter
Short Circuit
Current
Maximum Line
Transient
Conditions
(Note 7)
R
O
= 100Ω
LM2940, T
≤
100 ms
LM2940/883, T
≤
20 ms
LM2940C, T
≤
1 ms
Reverse Polarity
DC Input Voltage
Reverse Polarity
Transient Input
Voltage
R
O
= 100Ω
LM2940, LM2940/883
LM2940C
R
O
= 100Ω
LM2940, T
≤
100 ms
LM2940/883, T
≤
20 ms
LM2940C, T
≤
1 ms
−55
−75
−30
−30
55
45
75
Typ
5V
LM2940
Limit
(Note 5)
1.6
LM2940/883
Limit
(Note 6)
1.5/1.3
Typ
8V
LM2940
Limit
(Note 5)
1.6
LM2940/883
Limit
(Note 6)
1.6/1.3
Units
1.9
1.9
A
MIN
60/60
40/40
75
55
−15/−15
−30
−30
−75
−45/−45
60/60
40/40
45
−15/−15
−15
−50/−50
−45/−45
−15/−15
V
MIN
−15/−15
−15
−50/−50
−45/−45
V
MIN
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
9V
LM2940
Limit
(Note 5)
8.73/8.55
9.27/9.45
Line Regulation
Load Regulation
V
O
+ 2V
≤
V
IN
≤
26V,
I
O
= 5 mA
50 mA
≤
I
O
≤
1A
LM2940
LM2940C
Output Impedance
100 mADC and
20 mArms,
f
O
= 120 Hz
Quiescent
Current
V
O
+2V
≤
V
IN
< 26V,
I
O
= 5 mA
LM2940
LM2940C
V
IN
= V
O
+ 5V, I
O
= 1A
Output Noise
Voltage
Ripple Rejection
10 Hz − 100 kHz,
I
O
= 5 mA
f
O
= 120 Hz, 1 V
rms
,
I
O
= 100 mA
LM2940
LM2940C
Long Term
Stability
64
64
34
52/46
52
36
mV/
1000 Hr
63
51/45
dB
MIN
10
10
30
270
15/20
15
45/60
30
300
45/60
mA
MAX
μV
rms
10
15/20
mA
MAX
60
60
60
90/150
90
65
mΩ
65
100/165
mV
MAX
20
90
20
Typ
10V
LM2940
Limit
(Note 5)
9.70/9.50
10.30/10.50
100
Units
10.5V
≤
V
IN
≤
26V
Output Voltage
5 mA
≤
I
O
≤
1A
9.00
11.5V
≤
V
IN
≤
26V
10.00
V
MIN
V
MAX
mV
MAX
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