LM2940/LM2940C
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, J, WG, T, MP
≤
100
ms
LM2940CS, T
≤
1 ms
Internal Power Dissipation
(Note
Maximum Junction Temperature
Storage Temperature Range
Soldering Temperature (Note 3)
TO-220 (T), Wave
TO-263 (S)
60V
45V
Internally Limited
150°C
−65°C
≤
T
J
≤
+150°C
260°C, 10s
235°C, 30s
SOT-223 (MP)
LLP-8 (LD)
ESD Susceptibility (Note 4)
260°C, 30s
235°C, 30s
2 kV
(Note 1)
26V
−40°C
≤
T
J
≤
125°C
Operating Conditions
Input Voltage
Temperature Range
LM2940T, LM2940S
LM2940CT, LM2940CS
LM2940IMP
LM2940J, LM2940WG
LM2940LD
−55°C
≤
T
J
≤
125°C
−40°C
≤
T
J
≤
125°C
−40°C
≤
T
A
≤
85°C
0°C
≤
T
J
≤
125°C
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
5V
LM2940
Limit
(Note 5)
4.85/4.75
5.15/5.25
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
Ripple Rejection
10 Hz − 100 kHz,
I
O
= 5 mA
f
O
= 120 Hz, 1 V
rms
,
I
O
= 100 mA
LM2940
LM2940C
f
O
= 1 kHz, 1 V
rms
,
I
O
= 5 mA
Long Term
Stability
Dropout Voltage
I
O
= 1A
I
O
= 100 mA
20
0.5
110
0.8/1.0
150/200
0.7/1.0
150/200
32
0.5
110
0.8/1.0
150/200
0.7/1.0
150/200
mV/
1000 Hr
V
MAX
mV
MAX
72
72
60/54
60
60/50
66
66
54/48
54
54/48
dB
MIN
dB
MIN
150
700/700
240
1000/1000
μV
rms
10
10
30
15/20
15
45/60
50/60
30
45/60
50/60
mA
MAX
15/20
10
15/20
15/20
mA
MAX
35
35
35
50/80
50
1000/1000
50/100
55
55
55
80/130
80
1000/1000
mΩ
80/130
mV
MAX
20
50
LM2940/883
Limit
(Note 6)
4.85/4.75
5.15/5.25
40/50
20
Typ
8V
LM2940
Limit
(Note 5)
7.76/7.60
8.24/8.40
80
LM2940/883
Limit
(Note 6)
7.76/7.60
8.24/8.40
50/80
Units
6.25V
≤
V
IN
≤
26V
Output Voltage
5 mA
≤
I
O
≤
1A
5.00
8.00
9.4V
≤
V
IN
≤
26V
V
MIN
V
MAX
mV
MAX
3
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