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