The physical size of the SOT-223 is too small to contain the full device part number. The package markings indicated are what will appear on the actual device.
Output Voltage
5.0
LM2940J-5.0/883
5962-8958701EA
LM2940WG5.0/883
5962-8958701XA
8.0
12
LM2940J-12/883
5962-9088401QEA
LM2940WG5-12/883
15
LM2940J-15/883
5962-9088501QEA
Package
J16A
LM2940WG5-15/883 WG16A
For information on military temperature range products, please go to the Mil/Aero Web Site at http://www.national.com/appinfo/milaero/index.html.
Connection Diagrams
(TO-220) Plastic Package
3-Lead SOT-223
00882202
Front View
See NS Package Number TO3B
00882242
Front View
See NS Package Number MP04A
16-Lead Dual-in-Line Package (J)
16-Lead Ceramic Surface-Mount Package (WG)
00882243
00882244
Top View
See NS Package Number J16A
Top View
See NS Package Number WG16A
(TO-263) Surface-Mount Package
8-Lead LLP
00882211
Top View
00882246
00882212
Side View
See NS Package Number TS3B
Top View
Order Number LM2940LD-5.0, LM2940LD-8.0,
LM2940LD-9.0, LM2940LD-10,
LM2940LD-12, LM2940LD-15
See NS Package Number LDC08A
Pin 2 and pin 7 are fused to center DAP
Pin 5 ans 6 need to be tied together on PCB board
www.national.com
2
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 2)
Maximum Junction Temperature
Storage Temperature Range
TO-220 (T) Package
Lead Temperature, Time for Wave Soldering
260˚C, 10s
Internally Limited
150˚C
−65˚C
≤
T
J
≤
+150˚C
60V
45V
TO-263 (S) Package
SOT-223 (MP) Package
ESD Susceptibility (Note 3)
260˚C, 4s
260˚C, 4s
2 kV
Operating Conditions
(Note 1)
Input Voltage
Temperature Range
LM2940T, LM2940S
LM2940CT, LM2940CS
LM2940IMP
LM2940J, LM2940WG
LM2940LD
−40˚C
≤
T
J
≤
125˚C
0˚C
≤
T
J
≤
125˚C
−40˚C
≤
T
J
≤
85˚C
−55˚C
≤
T
J
≤
125˚C
−40˚C
≤
T
J
≤
125˚C
26V
Electrical Characteristics
V
IN
= V
O
+ 5V, I
O
= 1A, C
O
= 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
= 25˚C.
Output Voltage (V
O
)
Parameter
Conditions
Typ
5V
LM2940
Limit
(Note 4)
Output Voltage
Line Regulation
Load Regulation
5 mA
≤
I
O
≤
1A
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
Short Circuit
Current
I
O
= 1A
I
O
= 100 mA
(Note 6)
0.5
110
1.9
0.8/1.0
150/200
1.6
0.7/1.0
150/200
1.5/1.3
0.5
110
1.9
0.8/1.0
150/200
1.6
0.7/1.0
150/200
1.6/1.3
20
32
mV/
1000 Hr
V
MAX
mV
MAX
A
MIN
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
1000/1000
55
1000/1000
mΩ
35
35
50/80
50
50/100
55
55
80/130
80
80/130
mV
MAX
5.00
20
4.85/4.75
5.15/5.25
50
LM2940/883
Limit
(Note 5)
4.85/4.75
5.15/5.25
40/50
20
8.00
Typ
8V
LM2940
Limit
(Note 4)
7.76/7.60
8.24/8.40
80
LM2940/883
Limit
(Note 5)
7.76/7.60
8.24/8.40
50/80
V
MIN
V
MAX
mV
MAX
Units
6.25V
≤
V
IN
≤
26V
9.4V
≤
V
IN
≤
26V
3
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LM2940/LM2940C
Electrical Characteristics
Output Voltage (V
O
)
Parameter
Maximum Line
Transient
Conditions
R
O
= 100Ω
LM2940, T
≤
100 ms
(Continued)
V
IN
= V
O
+ 5V, I
O
= 1A, C
O
= 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
= 25˚C.
5V
LM2940
Typ
Limit
(Note 4)
75
55
−30
−30
−75
−55
60/60
40/40
45
−15/−15
−15
−50/−50
−45/−45
−45/−45
−15/−15
55
−30
−30
−75
45
−15/−15
−15
−50/−50
−45/−45
V
MIN
−15/−15
V
MIN
LM2940/883
Limit
(Note 5)
75
Typ
8V
LM2940
Limit
(Note 4)
60/60
40/40
LM2940/883
Limit
(Note 5)
Units
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
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 tempera-
ture 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 4)
10.5V
≤
V
IN
≤
26V
Output Voltage
Line Regulation
Load Regulation
5 mA
≤
I
O
≤1A
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
Dropout Voltage
I
O
= 1A
I
O
= 100 mA
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10V
LM2940
Typ
Limit
(Note 4)
11.5V
≤
V
IN
≤
26V
10.00
20
9.70/9.50
10.30/10.50
100
V
MIN
V
MAX
mV
MAX
Units
9.00
20
8.73/8.55
9.27/9.45
90
60
60
60
90/150
90
65
100/165
mV
MAX
65
mΩ
10
10
30
270
15/20
15
45/60
10
30
300
15/20
45/60
mA
MAX
mA
MAX
µV
rms
64
64
34
0.5
110
4
52/46
52
63
36
51/45
dB
MIN
mV/
1000 Hr
0.8/1.0
150/200
0.5
110
0.8/1.0
150/200
V
MAX
mV
MAX
LM2940/LM2940C
Electrical Characteristics
Output Voltage (V
O
)
Parameter
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
(Note 6)
(Continued)
V
IN
= V
O
+ 5V, I
O
= 1A, C
O
= 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
= 25˚C.
9V
LM2940
Conditions
Typ
1.9
Limit
(Note 4)
1.6
1.9
Typ
10V
LM2940
Limit
(Note 4)
1.6
A
MIN
Units
75
55
−30
−30
60/60
45
−15/−15
−15
75
60/60
V
MIN
−30
−15/−15
V
MIN
−75
−55
−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 tempera-
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