TL H 7781
LM140ALM140LM340ALM340LM7800C
Series
3-Terminal
Positive
Regulators
January 1995
LM140A LM140 LM340A LM340 LM7800C
Series 3-Terminal Positive Regulators
General Description
The LM140A LM140 LM340A LM340 LM7800C monolith-
ic 3-terminal positive voltage regulators employ internal cur-
rent-limiting thermal shutdown and safe-area compensa-
tion making them essentially indestructible If adequate
heat sinking is provided they can deliver over 1 0A output
current They are intended as fixed voltage regulators in a
wide range of applications including local (on-card) regula-
tion for elimination of noise and distribution problems asso-
ciated with single-point regulation In addition to use as fixed
voltage regulators these devices can be used with external
components to obtain adjustable output voltages and cur-
rents
Considerable effort was expended to make the entire series
of regulators easy to use and minimize the number of exter-
nal components It is not necessary to bypass the output
although this does improve transient response Input by-
passing is needed only if the regulator is located far from
the filter capacitor of the power supply
The 5V 12V and 15V regulator options are available in the
steel TO-3 power package The LM340A LM340 LM7800C
series is available in the TO-220 plastic power package and
the LM7805 and LM7812 are also available in the surface-
mount TO-263 package
Features
Y
Complete specifications at 1A load
Y
Output voltage tolerances of
g
2% at T
j
e
25 C and
g
4% over the temperature range (LM140A LM340A)
Y
Line regulation of 0 01% of V
OUT
V of DV
IN
at 1A load
(LM140A LM340A)
Y
Load regulation of 0 3% of V
OUT
A (LM140A LM340A)
Y
Internal thermal overload protection
Y
Internal short-circuit current limit
Y
Output transistor safe area protection
Y
P
a
Product Enhancement tested
Device
Output Voltages
Packages
LM140A LM140 5 12 15
TO-3 (K)
LM340A LM340 5 12 15
TO-3 (K) TO-220 (T)
LM7800C
5 6 8 12 15
TO-220 (T) TO-263 (S)
18 24
(5V and 12V only)
Typical Applications
Fixed Output Regulator
TL H 7781 1
Required if the regulator is located far from the
power supply filter
Although no output capacitor is needed for sta-
bility it does help transient response (If need-
ed use 0 1 mF ceramic disc)
Adjustable Output Regulator
TL H 7781 2
V
OUT
e
5V
a
(5V R1
a
I
Q
) R2 5V R1
l
3 I
Q
load regulation (L
r
)
(R1
a
R2) R1 (L
r
of
LM340-5)
Current Regulator
TL H 7781 3
I
OUT
e
V2-3
R1
a
I
Q
D
I
Q
e
1 3 mA over line and load changes
C1995 National Semiconductor Corporation
RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
(Note 5)
DC Input Voltage
All Devices except LM7824 LM7824C
35V
LM7824 LM7824C
40V
Internal Power Dissipation (Note 2)
Internally Limited
Maximum Junction Temperature
150 C
Storage Temperature Range
b
65 C to
a
150 C
Lead Temperature (Soldering 10 sec )
TO-3 Package (K)
300 C
TO-220 Package (T) TO-263 Package (S)
230 C
ESD Susceptibility (Note 3)
2 kV
Operating Conditions
(Note 1)
Temperature Range (T
A
) (Note 2)
LM140A LM140
b
55 C to
a
125 C
LM340A LM340 LM7805C
LM7812C LM7815C
0 C to
a
70 C
LM7806C LM7808C LM7818C
LM7824C
0 C to
a
125 C
LM140A LM340A
Electrical Characteristics
I
OUT
e
1A
b
55 C
s
T
J
s
a
150 C (LM140A) or 0 C
s
T
J
s
a
125 C (LM340A) unless otherwise specified (Note 4)
Output Voltage
5V
12V
15V
Symbol
Input Voltage (unless otherwise noted)
10V
19V
23V
Units
Parameter
Conditions
Min
Typ Max
Min
Typ
Max
Min
Typ
Max
V
O
Output Voltage
T
J
e
25 C
4 9
5
5 1 11 75
12
12 25 14 7
15
15 3
V
P
D
s
15W 5 mA
s
I
O
s
1A
4 8
5 2
11 5
12 5
14 4
15 6
V
V
MIN
s
V
IN
s
V
MAX
(7 5
s
V
IN
s
20) (14 8
s
V
IN
s
27) (17 9
s
V
IN
s
30)
V
D
V
O
Line Regulation
I
O
e
500 mA
10
18
22
mV
D
V
IN
(7 5
s
V
IN
s
20) (14 8
s
V
IN
s
27) (17 9
s
V
IN
s
30)
V
T
J
e
25 C
3
10
4
18
4
22
mV
D
V
IN
(7 5
s
V
IN
s
20) (14 5
s
V
IN
s
27) (17 5
s
V
IN
s
30)
V
T
J
e
25 C
4
9
10
mV
Over Temperature
12
30
30
mV
D
V
IN
(8
s
V
IN
s
12)
(16
s
V
IN
s
22)
(20
s
V
IN
s
26)
V
D
V
O
Load Regulation
T
J
e
25 C 5 mA
s
I
O
s
1 5A
10
25
12
32
12
35
mV
250 mA
s
I
O
s
750 mA
15
19
21
mV
Over Temperature
25
60
75
mV
5 mA
s
I
O
s
1A
I
Q
Quiescent Current
T
J
e
25 C
6
6
6
mA
Over Temperature
6 5
6 5
6 5
mA
D
I
Q
Quiescent Current
5 mA
s
I
O
s
1A
0 5
0 5
0 5
mA
Change
T
J
e
25 C I
O
e
1A
0 8
0 8
0 8
mA
V
MIN
s
V
IN
s
V
MAX
(7 5
s
V
IN
s
20) (14 8
s
V
IN
s
27) (17 9
s
V
IN
s
30)
V
I
O
e
500 mA
0 8
0 8
0 8
mA
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
25)
(15
s
V
IN
s
30)
(17 9
s
V
IN
s
30)
V
V
N
Output Noise Voltage T
A
e
25 C 10 Hz
s
f
s
100 kHz
40
75
90
m
V
D
V
IN
D
V
OUT
Ripple Rejection
T
J
e
25 C f
e
120 Hz I
O
e
1A
68
80
61
72
60
70
dB
or f
e
120 Hz I
O
e
500 mA
68
61
60
dB
Over Temperature
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
18)
(15
s
V
IN
s
25) (18 5
s
V
IN
s
28 5)
V
R
O
Dropout Voltage
T
J
e
25 C I
O
e
1A
2 0
2 0
2 0
V
Output Resistance
f
e
1 kHz
8
18
19
mX
Short-Circuit Current T
J
e
25 C
2 1
1 5
1 2
A
Peak Output Current T
J
e
25 C
2 4
2 4
2 4
A
Average TC of V
O
Min T
J
e
0 C I
O
e
5 mA
b
0 6
b
1 5
b
1 8
mV C
V
IN
Input Voltage
T
J
e
25 C
Required to Maintain
7 5
14 5
17 5
V
Line Regulation
2
LM140
Electrical Characteristics
(Note 4)
b
55 C
s
T
J
s
a
150 C unless otherwise specified
Output Voltage
5V
12V
15V
Symbol
Input Voltage (unless otherwise noted)
10V
19V
23V
Units
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
V
O
Output Voltage
T
J
e
25 C 5 mA
s
I
O
s
1A
4 8
5
5 2
11 5
12
12 5
14 4
15
15 6
V
P
D
s
15W 5 mA
s
I
O
s
1A
4 75
5 25
11 4
12 6
14 25
15 75
V
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
20)
(15 5
s
V
IN
s
27)
(18 5
s
V
IN
s
30)
V
D
V
O
Line Regulation
I
O
e
500 mA T
J
e
25 C
3
50
4
120
4
150
mV
D
V
IN
(7
s
V
IN
s
25)
(14 5
s
V
IN
s
30)
(17 5
s
V
IN
s
30)
V
b
55 C
s
T
J
s
a
150 C
50
120
150
mV
D
V
IN
(8
s
V
IN
s
20)
(15
s
V
IN
s
27)
(18 5
s
V
IN
s
30)
V
I
O
s
1A
T
J
e
25 C
50
120
150
mV
D
V
IN
(7 5
s
V
IN
s
20)
(14 6
s
V
IN
s
27)
(17 7
s
V
IN
s
30)
V
b
55 C
s
T
J
s
a
150 C
25
60
75
mV
D
V
IN
(8
s
V
IN
s
12)
(16
s
V
IN
s
22)
(20
s
V
IN
s
26)
V
D
V
O
Load Regulation
T
J
e
25 C
5 mA
s
I
O
s
1 5A
10
50
12
120
12
150
mV
250 mA
s
I
P
s
750 mA
25
60
75
mV
b
55 C
s
T
J
s
a
150 C
50
120
150
mV
5 mA
s
I
O
s
1A
I
Q
Quiescent Current
I
O
s
1A
T
J
e
25 C
6
6
6
mA
b
55 C
s
T
J
s
a
150 C
7
7
7
mA
D
I
Q
Quiescent Current
5 mA
s
I
O
s
1A
0 5
0 5
0 5
mA
Change
T
J
e
25 C I
O
s
1A
0 8
0 8
0 8
mA
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
20)
(15
s
V
IN
s
27)
(18 5
s
V
IN
s
30)
V
I
O
e
500 mA
b
55 C
s
T
J
s
a
150 C
0 8
0 8
0 8
mA
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
25)
(15
s
V
IN
s
30)
(18 5
s
V
IN
s
30)
V
V
N
Output Noise Voltage T
A
e
25 C 10 Hz
s
f
s
100 kHz
40
75
90
m
V
D
V
IN
D
V
OUT
Ripple Rejection
I
O
s
1A T
J
e
25 C or
68
80
61
72
60
70
dB
f
e
120 Hz
I
O
s
500 mA
68
61
60
dB
b
55 C
s
T
J
s
a
150 C
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
18)
(15
s
V
IN
s
25)
(18 5
s
V
IN
s
28 5)
V
R
O
Dropout Voltage
T
J
e
25 C I
O
e
1A
2 0
2 0
2 0
V
Output Resistance
f
e
1 kHz
8
18
19
mX
Short-Circuit Current T
J
e
25 C
2 1
1 5
1 2
A
Peak Output Current T
J
e
25 C
2 4
2 4
2 4
A
Average TC of V
OUT
0 C
s
T
J
s
a
150 C I
O
e
5 mA
b
0 6
b
1 5
b
1 8
mV C
V
IN
Input Voltage
T
J
e
25 C I
O
s
1A
Required to Maintain
7 5
14 6
17 7
V
Line Regulation
3
LM340 LM7800C
Electrical Characteristics
(Note 4) 0 C
s
T
J
s
a
125 C unless otherwise specified
Output Voltage
5V
12V
15V
Symbol
Input Voltage (unless otherwise noted)
10V
19V
23V
Units
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
V
O
Output Voltage
T
J
e
25 C 5 mA
s
I
O
s
1A
4 8
5
5 2
11 5
12
12 5
14 4
15
15 6
V
P
D
s
15W 5 mA
s
I
O
s
1A
4 75
5 25
11 4
12 6
14 25
15 75
V
V
MIN
s
V
IN
s
V
MAX
(7 5
s
V
IN
s
20)
(14 5
s
V
IN
s
27)
(17 5
s
V
IN
s
30)
V
D
V
O
Line Regulation
I
O
e
500 mA T
J
e
25 C
3
50
4
120
4
150
mV
D
V
IN
(7
s
V
IN
s
25)
(14 5
s
V
IN
s
30)
(17 5
s
V
IN
s
30)
V
0 C
s
T
J
s
a
125 C
50
120
150
mV
D
V
IN
(8
s
V
IN
s
20)
(15
s
V
IN
s
27)
(18 5
s
V
IN
s
30)
V
I
O
s
1A
T
J
e
25 C
50
120
150
mV
D
V
IN
(7 5
s
V
IN
s
20)
(14 6
s
V
IN
s
27)
(17 7
s
V
IN
s
30)
V
0 C
s
T
J
s
a
125 C
25
60
75
mV
D
V
IN
(8
s
V
IN
s
12)
(16
s
V
IN
s
22)
(20
s
V
IN
s
26)
V
D
V
O
Load Regulation
T
J
e
25 C
5 mA
s
I
O
s
1 5A
10
50
12
120
12
150
mV
250 mA
s
I
O
s
750 mA
25
60
75
mV
5 mA
s
I
O
s
1A 0 C
s
T
J
s
a
125 C
50
120
150
mV
I
Q
Quiescent Current
I
O
s
1A
T
J
e
25 C
8
8
8
mA
0 C
s
T
J
s
a
125 C
8 5
8 5
8 5
mA
D
I
Q
Quiescent Current
5 mA
s
I
O
s
1A
0 5
0 5
0 5
mA
Change
T
J
e
25 C I
O
s
1A
1 0
1 0
1 0
mA
V
MIN
s
V
IN
s
V
MAX
(7 5
s
V
IN
s
20)
(14 8
s
V
IN
s
27)
(17 9
s
V
IN
s
30)
V
I
O
s
500 mA 0 C
s
T
J
s
a
125 C
1 0
1 0
1 0
mA
V
MIN
s
V
IN
s
V
MAX
(7
s
V
IN
s
25)
(14 5
s
V
IN
s
30)
(17 5
s
V
IN
s
30)
V
V
N
Output Noise Voltage T
A
e
25 C 10 Hz
s
f
s
100 kHz
40
75
90
m
V
D
V
IN
D
V
OUT
Ripple Rejection
I
O
s
1A T
J
e
25 C
62
80
55
72
54
70
dB
f
e
120 Hz
or I
O
s
500 mA
62
55
54
dB
0 C
s
T
J
s
a
125 C
V
MIN
s
V
IN
s
V
MAX
(8
s
V
IN
s
18)
(15
s
V
IN
s
25)
(18 5
s
V
IN
s
28 5)
V
R
O
Dropout Voltage
T
J
e
25 C I
O
e
1A
2 0
2 0
2 0
V
Output Resistance
f
e
1 kHz
8
18
19
mX
Short-Circuit Current T
J
e
25 C
2 1
1 5
1 2
A
Peak Output Current T
J
e
25 C
2 4
2 4
2 4
A
Average TC of V
OUT
0 C
s
T
J
s
a
125 C I
O
e
5 mA
b
0 6
b
1 5
b
1 8
mV C
V
IN
Input Voltage
T
J
e
25 C I
O
s
1A
Required to Maintain
7 5
14 6
17 7
V
Line Regulation
Note 1
Absolute Maximum Ratings are limits beyond which damage to the device may occur Operating Conditions are conditions under which the device
functions but the specifications might not be guaranteed For guaranteed specifications and test conditions see the Electrical Characteristics
Note 2
The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation (T
JMAX
e
125 C or
150 C) the junction-to-ambient thermal resistance (i
JA
) and the ambient temperature (T
A
) P
DMAX
e
(T
JMAX
b
T
A
) i
JA
If this dissipation is exceeded the die
temperature will rise above T
JMAX
and the electrical specifications do not apply If the die temperature rises above 150 C the device will go into thermal shutdown
For the TO-3 package (K KC) the junction-to-ambient thermal resistance (i
JA
) is 39 C W When using a heatsink i
JA
is the sum of the 4 C W junction-to-case
thermal resistance (i
JC
) of the TO-3 package and the case-to-ambient thermal resistance of the heatsink For the TO-220 package (T) i
JA
is 54 C W and i
JC
is
4 C W
If the TO-263 package is used the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package Using 0 5
square inches of copper area i
JA
is 50 C W with 1 square inch of copper area i
JA
is 37 G W and with 1 6 or more inches of copper area i
JA
is 32 C W
Note 3
ESD rating is based on the human body model 100 pF discharged through 1 5 kX
Note 4
All characteristics are measured with a 0 22 mF capacitor from input to ground and a 0 1 mF capacitor from output to ground All characteristics except
noise voltage and ripple rejection ratio are measured using pulse techniques (t
w
s
10 ms duty cycle
s
5%) Output voltage changes due to changes in internal
temperature must be taken into account separately
Note 5
A military RETS specification is available on request At the time of printing the military RETS specifications for the LM140AK-5 0 883 LM140AK-12 883
and LM140AK-15 883 complied with the min and max limits for the respective versions of the LM140A At the time of printing the military RETS specifications for
the LM140K-5 0 883 LM140K-12 883 and LM140K-15 883 complied with the min and max limits for the respective versions of the LM140 The LM140H 883
LM140K 883 and LM140AK 883 may also be procured as a Standard Military Drawing
4
LM7806C
Electrical Characteristics
0 C
s
T
J
s
a
150 C V
I
e
11V I
O
e
500 mA C
I
e
0 33 mF C
O
e
0 1 mF unless otherwise specified
Symbol
Parameter
Conditions (Note 4)
Min
Typ
Max
Units
V
O
Output Voltage
T
J
e
25 C
5 75
6 0
6 25
V
D
V
O
Line Regulation
T
J
e
25 C
8 0V
s
V
I
s
25V
5 0
120
mV
9 0V
s
V
I
s
13V
1 5
60
D
V
O
Load Regulation
T
J
e
25 C
5 0 mA
s
I
O
s
1 5A
14
120
mV
250 mA
s
I
O
s
750 mA
4 0
60
V
O
Output Voltage
8 0V
s
V
I
s
21V 5 0 mA
s
I
O
s
1 0A P
s
15W
5 7
6 3
V
I
Q
Quiescent Current
T
J
e
25 C
4 3
8 0
mA
D
I
Q
Quiescent Current
With Line
8 0V
s
V
I
s
25V
1 3
mA
Change
With Load
5 0 mA
s
I
O
s
1 0A
0 5
V
N
Noise
T
A
e
25 C 10 Hz
s
f
s
100 kHz
45
m
V
D
V
I
D
V
O
Ripple Rejection
f
e
120 Hz I
O
e
350 mA T
J
e
25 C
59
75
dB
V
DO
Dropout Voltage
I
O
e
1 0A T
J
e
25 C
2 0
V
R
O
Output Resistance
f
e
1 0 kHz
9
mX
I
OS
Output Short Circuit Current
T
J
e
25 C V
I
e
35V
550
mA
I
PK
Peak Output Current
T
J
e
25 C
2 2
A
D
V
O
D
T
Average Temperature
I
O
e
5 0 mA 0 C
s
T
A
s
a
125 C
0 8
mV C
Coefficient of Output Voltage
LM7808C
Electrical Characteristics
0 C
s
T
J
s
a
150 C V
I
e
14V I
O
e
500 mA C
I
e
0 33 mF C
O
e
0 1 mF unless otherwise specified
Symbol
Parameter
Conditions (Note 4)
LM7808C
Units
Min
Typ
Max
V
O
Output Voltage
T
J
e
25 C
7 7
8 0
8 3
V
D
V
O
Line Regulation
T
J
e
25 C
10 5V
s
V
I
s
25V
6 0
160
mV
11 0V
s
V
I
s
17V
2 0
80
D
V
O
Load Regulation
T
J
e
25 C
5 0 mA
s
I
O
s
1 5A
12
160
mV
250 mA
s
I
O
s
750 mA
4 0
80
V
O
Output Voltage
11 5V
s
V
I
s
23V 5 0 mA
s
I
O
s
1 0A P
s
15W
7 6
8 4
V
I
Q
Quiescent Current
T
J
e
25 C
4 3
8 0
mA
D
I
Q
Quiescent
With Line
11 5V
s
V
I
s
25V
1 0
mA
Current Change
With Load
5 0 mA
s
I
O
s
1 0A
0 5
V
N
Noise
T
A
e
25 C 10 Hz
s
f
s
100 kHz
52
m
V
D
V
I
D
V
O
Ripple Rejection
f
e
120 Hz I
O
e
350 mA T
J
e
25 C
56
72
dB
V
DO
Dropout Voltage
I
O
e
1 0A T
J
e
25 C
2 0
V
R
O
Output Resistance
f
e
1 0 kHz
16
mX
I
OS
Output Short Circuit Current
T
J
e
25 C V
I
e
35V
0 45
A
I
PK
Peak Output Current
T
J
e
25 C
2 2
A
D
V
O
D
T
Average Temperature
I
O
e
5 0 mA
0 8
mV C
Coefficient of Output Voltage
Note 4
All characteristics are measured with a 0 22 mF capacitor from input to ground and a 0 1 mF capacitor from output to ground All characteristics except
noise voltage and ripple rejection ratio are measured using pulse techniques (t
w
s
10 ms duty cycle
s
5%) Output voltage changes due to changes in internal
temperature must be taken into account separately
5
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