LM340/LM78XX
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
DC Input Voltage
Internal Power Dissipation (Note 2)
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
TO-3 Package (K)
300˚C
35V
Internally Limited
150˚C
−65˚C to +150˚C
TO-220 Package (T), TO-263
Package (S)
ESD Susceptibility (Note 3)
230˚C
2 kV
Operating Conditions
Temperature Range (T
A
LM140
LM340A, LM340
LM7808C
−55˚C to +125˚C
0˚C to +125˚C
0˚C to +125˚C
LM340A Electrical Characteristics
I
OUT
= 1A, 0˚C
≤
T
J
≤
+ 125˚C (LM340A) unless otherwise specified (Note 4)
Output Voltage
Symbol
V
O
Input Voltage (unless otherwise noted)
Parameter
Output Voltage
T
J
= 25˚C
P
D
≤
15W, 5 mA
≤
I
O
≤
1A
V
MIN
≤
V
IN
≤
V
MAX
∆V
O
Line Regulation
I
O
= 500 mA
∆V
IN
T
J
= 25˚C
∆V
IN
T
J
= 25˚C
Over Temperature
∆V
IN
∆V
O
Load Regulation
T
J
= 25˚C
5 mA
≤
I
O
≤
1.5A
250 mA
≤
I
O
≤
750
mA
Over Temperature,
5 mA
≤
I
O
≤
1A
I
Q
Quiescent
Current
Quiescent
Current
Change
T
J
= 25˚C
Over Temperature
∆I
Q
5 mA
≤
I
O
≤
1A
T
J
= 25˚C, I
O
= 1A
V
MIN
≤
V
IN
≤
V
MAX
I
O
= 500 mA
V
MIN
≤
V
IN
≤
V
MAX
V
N
Output Noise
Voltage
Ripple Rejection
T
A
= 25˚C, 10 Hz
≤
f
≤
100 kHz
T
J
= 25˚C, f = 120 Hz, I
O
= 1A
or f = 120 Hz, I
O
= 500 mA,
Over Temperature,
V
MIN
≤
V
IN
≤
V
MAX
R
O
Dropout Voltage
Output
Resistance
Short-Circuit
Current
T
J
= 25˚C, I
O
= 1A
f = 1 kHz
T
J
= 25˚C
(8
≤
V
IN
≤
18)
2.0
8
2.1
(15
≤
V
IN
≤
25)
2.0
18
1.5
(18.5
≤
V
IN
≤
28.5)
2.0
19
1.2
V
V
mΩ
A
68
68
40
80
61
61
0.5
0.8
(7.5
≤
V
IN
≤
20)
0.8
(8
≤
V
IN
≤
25)
75
72
60
60
6
6.5
0.5
0.8
(14.8
≤
V
IN
≤
27)
0.8
(15
≤
V
IN
≤
30)
90
70
6
6.5
0.5
0.8
(17.9
≤
V
IN
≤
30)
0.8
(17.9
≤
V
IN
≤
30)
6
6.5
mA
mA
mA
mA
V
mA
V
µV
dB
dB
10
3
Conditions
4.9
4.8
5V
10V
Min Typ Max
5
5.1
5.2
10
(7.5
≤
V
IN
≤
20)
10
4
12
(8
≤
V
IN
≤
12)
25
15
25
12
(7.5
≤
V
IN
≤
20)
4
Min
11.75
11.5
12V
19V
Typ Max
12.5
18
(14.8
≤
V
IN
≤
27)
18
9
30
(16
≤
V
IN
≤
22)
32
19
60
12
(14.5
≤
V
IN
≤
27)
4
Min
14.4
12 12.25 14.7
15V
23V
Typ Max
15
15.3
15.6
22
(17.9
≤
V
IN
≤
30)
22
10
30
(20
≤
V
IN
≤
26)
35
21
75
(17.5
≤
V
IN
≤
30)
V
V
V
mV
V
mV
V
mV
mV
V
mV
mV
mV
Units
(7.5
≤
V
IN
≤
20)
(14.8
≤
V
IN
≤
27)
(17.9
≤
V
IN
≤
30)
3
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