2005 Fairchild Semiconductor Corporation
DS400018
www.fairchildsemi.com
April 1999
Revised December 2005
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A 3
-
T
e
r
m
i
nal
1A
P
o
s
i
ti
ve
V
o
l
t
a
g
e Re
gul
at
or
LM7805 LM7806 LM7808 LM7809
LM7810 LM7812 LM7815 LM7818 LM7824
LM7805A LM7806A LM7808A LM7809A
LM7810A LM7812A LM7815A LM7818A LM7824A
3-Terminal 1A Positive Voltage Regulator
General Description
The LM78XX series of three terminal positive regulators are
available in the TO-220 package and with several fixed output
voltages, making them useful in a wide range of applications.
Each type employs internal current limiting, thermal shut down
and safe operating area protection, making it essentially inde-
structible. If adequate heat sinking is provided, they can deliver
over 1A output current. Although designed primarily as fixed
voltage regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
Features
O
Output Current up to 1A
O
Output Voltages of 5, 6, 8, 9, 12, 15, 18, 24
O
Thermal Overload Protection
O
Short Circuit Protection
O
Output Transistor Safe Operating Area Protection
Ordering Code:
Product Number
Output Voltage Tolerance
Package
Operating Temperature
LM7805CT
r
4%
TO-220
40
q
C -
125
q
C
LM7806CT
LM7808CT
LM7809CT
LM7810CT
LM7812CT
LM7815CT
LM7818CT
LM7824CT
LM7805ACT
r
2%
0
q
C -
125
q
C
LM7806ACT
LM7808ACT
LM7809ACT
LM7810ACT
LM7812ACT
LM7815ACT
LM7818ACT
LM7824ACT
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2
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Internal Block Diagram
3
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LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Absolute Maximum Ratings
(Note 1)
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The datasheet specifications should be met, without exception, to ensure
that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifica-
tions.
Electrical Characteristics (LM7805)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 10V, C
I
= 0.1
P
F, unless otherwise specified)
Note 2: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 3: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Value
Unit
Input Voltage (for V
O
= 5V to 18V)
V
I
35
V
(for V
O
= 24V)
V
I
40
V
Thermal Resistance Junction-Cases (TO-220)
R
T
JC
5
q
C/W
Thermal Resistance Junction-Air (TO-220)
R
T
JA
65
q
C/W
Operating Temperature Range
T
OPR
0
a
125
q
C
LM78xx
40
a
125
q
C
LM78xxA
0
a
125
q
C
Storage Temperature Range
T
STG
65
a
150
q
C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
4.8
5.0
5.2
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 7V to 20V
4.75
5.0
5.25
Line Regulation
Regline
T
J
=
25
q
C
V
O
= 7V to 25V
4.0
100
mV
(Note 2)
V
I
= 8V to 12V
1.6
50.0
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
9.0
100
mV
I
O
= 250mA to 750mA
4.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.03
0.5
mA
V
I
= 7V to 25V
0.3
1.3
Output Voltage Drift (Note 3)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
42.0
P
V/V
O
Ripple Rejection (Note 3)
RR
f = 120Hz, V
O
= 8V to 18V
62.0
73.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 3)
rO
f = 1KHz
15.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
230
mA
Peak Current (Note 3)
I
PK
T
J
=
25
q
C
2.2
A
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4
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7806)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 11V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 4: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 5: These parameters, although guaranteed, are not 100% tested in production.
Electrical Characteristics (LM7808)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 14V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 6: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 7: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
5.75
6.0
6.25
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 8.0V to 21V
5.7
6.0
6.3
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 8V to 25V
5.0
120
mV
(Note 4)
V
I
= 9V to 13V
1.5
60.0
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
9.0
120
mV
(Note 4)
I
O
= 250mA to 750mA
3.0
60.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 8V to 25V
1.3
Output Voltage Drift (Note 5)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
45.0
P
V/V
O
Ripple Rejection (Note 5)
RR
f = 120Hz, V
O
= 8V to 18V
62.0
73.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 5)
rO
f = 1KHz
19.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 5)
I
PK
T
J
=
25
q
C
2.2
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
7.7
8.0
8.3
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 10.5V to 23V
7.6
8.0
8.4
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 10.5V to 25V
5.0
160
mV
(Note 6)
V
I
= 11.5V to 17V
2.0
80.0
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
10.0
160
mV
(Note 6)
I
O
= 250mA to 750mA
5.0
80.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.05
0.5
mA
V
I
= 10.5V to 25V
0.5
1.0
Output Voltage Drift (Note 7)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
52.0
P
V/V
O
Ripple Rejection (Note 7)
RR
f = 120Hz, V
O
= 11.5V to 21.5V
56.0
73.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 7)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
230
mA
Peak Current (Note 7)
I
PK
T
J
=
25
q
C
2.2
A
5
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LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7809)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 15V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 8: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 9: These parameters, although guaranteed, are not 100% tested in production.
Electrical Characteristics (LM7810)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 16V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 10: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 11: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
8.65
9.0
9.35
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 11.5V to 24V
8.6
9.0
9.4
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 11.5V to 25V
6.0
180
mV
(Note 8)
V
I
= 12V to 17V
2.0
90.0
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
12.0
180
mV
(Note 8)
I
O
= 250mA to 750mA
4.0
90.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 11.5V to 26V
1.3
Output Voltage Drift (Note 9)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
58.0
P
V/V
O
Ripple Rejection (Note 9)
RR
f = 120Hz, V
O
= 13V to 23V
56.0
71.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 9)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 9)
I
PK
T
J
=
25
q
C
2.2
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
9.6
10.0
10.4
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 12.5V to 25V
9.5
10.0
10.5
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 12.5V to 25V
10.0
200
mV
(Note 10)
V
I
= 13V to 25V
3.0
100
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
12.0
200
mV
(Note 10)
I
O
= 250mA to 750mA
4.0
400
Quiescent Current
I
Q
T
J
=
25
q
C
5.1
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 12.5V to 29V
1.0
Output Voltage Drift (Note 11)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
58.0
P
V/V
O
Ripple Rejection (Note 11)
RR
f = 120Hz, V
O
= 13V to 23V
56.0
71.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 11)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 11)
I
PK
T
J
=
25
q
C
2.2
A
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6
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7812)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 19V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 12: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 13: These parameters, although guaranteed, are not 100% tested in production.
Electrical Characteristics (LM7815)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 23V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 14: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 15: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
11.5
12.0
12.5
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 14.5V to 27V
11.4
12.0
12.6
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 14.5V to 30V
10.0
240
mV
(Note 12)
V
I
= 16V to 22V
3.0
120
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
11.0
240
mV
(Note 12)
I
O
= 250mA to 750mA
5.0
120
Quiescent Current
I
Q
T
J
=
25
q
C
5.1
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.1
0.5
mA
V
I
= 14.5V to 30V
0.5
1.0
Output Voltage Drift (Note 13)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
76.0
P
V/V
O
Ripple Rejection (Note 13)
RR
f = 120Hz, V
I
= 15V to 25V
55.0
71.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 13)
rO
f = 1KHz
18.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
230
mA
Peak Current (Note 13)
I
PK
T
J
=
25
q
C
2.2
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
14.4
15.0
15.6
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 17.5V to 30V
14.25
15.0
15.75
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 17.5V to 30V
11.0
300
mV
(Note 14)
V
I
= 20V to 26V
3.0
150
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
12.0
300
mV
(Note 14)
I
O
= 250mA to 750mA
4.0
150
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 17.5V to 30V
1.0
Output Voltage Drift (Note 15)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
90.0
P
V/V
O
Ripple Rejection (Note 15)
RR
f = 120Hz, V
I
= 18.5V to 28.5V
54.0
70.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 15)
rO
f = 1KHz
19.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 15)
I
PK
T
J
=
25
q
C
2.2
A
7
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7818)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 27V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 16: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 17: These parameters, although guaranteed, are not 100% tested in production.
Electrical Characteristics (LM7824)
(Refer to the test circuits.
40
q
C
T
J
125
q
C, I
O
= 500mA, V
I
= 33V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 18: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 19: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
17.3
18.0
18.7
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 21V to 33V
17.1
18.0
18.9
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 21V to 33V
15.0
360
mV
(Note 12)
V
I
= 24V to 30V
5.0
180
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
15.0
360
mV
(Note 12)
I
O
= 250mA to 750mA
5.0
180
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 21V to 33V
1.0
Output Voltage Drift (Note 17)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
110
P
V/V
O
Ripple Rejection (Note 17)
RR
f = 120Hz, V
I
= 22V to 32V
53.0
69.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 17)
rO
f = 1KHz
22.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 17)
I
PK
T
J
=
25
q
C
2.2
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
23.0
24.0
25.0
V
5mA
d
I
O
d
1A, P
O
d
15W, V
I
= 27V to 38V
22.8
24.0
25.25
Line Regulation
Regline
T
J
=
25
q
C
V
I
= 27V to 38V
17.0
480
mV
(Note 18)
V
I
= 30V to 36V
6.0
240
Load Regulation
Regload
T
J
=
25
q
C
I
O
= 5mA to 1.5mA
15.0
480
mV
(Note 18)
I
O
= 250mA to 750mA
5.0
240
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
8.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.1
0.5
mA
V
I
= 27V to 38V
0.5
1.0
Output Voltage Drift (Note 19)
'
V
O
/
'
T
I
O
= 5mA
1.5
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
60.0
P
V/V
O
Ripple Rejection (Note 19)
RR
f = 120Hz, V
I
= 28V to 38V
50.0
67.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 19)
rO
f = 1KHz
28.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
230
mA
Peak Current (Note 19)
I
PK
T
J
=
25
q
C
2.2
A
www.fairchildsemi.com
8
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7805A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 10V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 20: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 21: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
4.9
5.0
5.1
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 7.5V to 20V
4.8
5.0`
5.2
Line Regulation
Regline
V
I
= 7.5V to 25V, I
O
= 500mA
5.0
50.0
mV
(Note 20)
V
I
= 8V to 12V
3.0
50.0
T
J
=
25
q
C
V
I
= 7.3V to 20V
5.0
50.0
V
I
= 8V to 12V
1.5
25.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
9.0
100
mV
(Note 20)
I
O
= 5mA to 1mA
9.0
100
I
O
= 250mA to 750mA
4.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 8V to 25V, I
O
= 500mA
0.8
V
I
= 7.5V to 20V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 21)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 21)
RR
f = 120Hz, I
O
= 500mA, V
I
= 8V to 18V
68.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 21)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 21)
I
PK
T
J
=
25
q
C
2.2
A
9
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7806A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 11V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 22: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 23: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
5.58
6.0
6.12
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 8.6V to 21V
5.76
6.0
6.24
Line Regulation
Regline
V
I
= 8.6V to 25V, I
O
= 500mA
5.0
60.0
mV
(Note 22)
V
I
= 9V to 13V
3.0
60.0
T
J
=
25
q
C
V
I
= 8.3V to 21V
5.0
60.0
V
I
= 9V to 13V
1.5
30.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
9.0
100
mV
(Note 22)
I
O
= 5mA to 1mA
4.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
4.3
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 19V to 25V, I
O
= 500mA
0.8
V
I
= 8.5V to 21V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 23)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 23)
RR
f = 120Hz, I
O
= 500mA, V
I
= 9V to 19V
65.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 23)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 23)
I
PK
T
J
=
25
q
C
2.2
A
www.fairchildsemi.com
10
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7808A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 14V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 24: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 25: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=
25
q
C
7.84
8.0
8.16
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 10.6V to 23V
7.7
8.0
8.3
Line Regulation
Regline
V
I
= 10.6V to 25V, I
O
= 500mA
6.0
80.0
mV
(Note 24)
V
I
= 11V to 17V
3.0
80.0
T
J
=
25
q
C
V
I
= 10.4V to 23V
6.0
80.0
V
I
= 11V to 17V
2.0
40.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
12.0
100
mV
(Note 24)
I
O
= 5mA to 1mA
12.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 11V to 25V, I
O
= 500mA
0.8
V
I
= 10.6V to 23V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 25)
'
V
O
/
'
T
I
O
= 5mA
0.8
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 25)
RR
f = 120Hz, I
O
= 500mA, V
I
= 11.5V to 21.5V
62.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 25)
rO
f = 1KHz
18.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 25)
I
PK
T
J
=
25
q
C
2.2
A
11
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7809A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 15V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 26: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 27: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
8.82
9.0
9.16
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 11.2V to 24V
8.65
9.0
9.35
Line Regulation
Regline
V
I
= 11.7V to 25V, I
O
= 500mA
6.0
90.0
mV
(Note 26)
V
I
= 12.5V to 19V
4.0
45.0
T
J
=
25
q
C
V
I
= 11.5V to 24V
6.0
90.0
V
I
= 12.5V to 19V
2.0
45.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.0mA
12.0
100
mV
(Note 26)
I
O
= 5mA to 1mA
12.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 12V to 25V, I
O
= 500mA
0.8
V
I
= 11.7V to 25V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 27)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 27)
RR
f = 120Hz, I
O
= 500mA, V
I
= 12V to 22V
62.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 27)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 27)
I
PK
T
J
=
25
q
C
2.2
A
www.fairchildsemi.com
12
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7810A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 16V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 28: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 29: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
9.8
10.0
10.2
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 12.8V to 25V
9.6
10.0
10.4
Line Regulation
Regline
V
I
= 12.8V to 26V, I
O
= 500mA
8.0
100
mV
(Note 28)
V
I
= 13V to 20V
4.0
50.0
T
J
=
25
q
C
V
I
= 12.5V to 25V
8.0
100
V
I
= 13V to 20V
3.0
50.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
12.0
100
mV
(Note 28)
I
O
= 5mA to 1mA
12.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.0
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 12.8V to 25V, I
O
= 500mA
0.8
V
I
= 13V to 26V, T
J
=
25
q
C
0.5
Output Voltage Drift (Note 29)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 29)
RR
f = 120Hz, I
O
= 500mA, V
I
= 14V to 24V
62.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 29)
rO
f = 1KHz
17.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 29)
I
PK
T
J
=
25
q
C
2.2
A
13
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7812A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 19V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 30: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 31: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
11.75
12.0
12.25
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 14.8V to 27V
11.5
12.0
12.5
Line Regulation
Regline
V
I
= 14.8V to 30V, I
O
= 500mA
10.0
120
mV
(Note 30)
V
I
= 16V to 22V
4.0
120
T
J
=
25
q
C
V
I
= 14.5V to 27V
10.0
120
V
I
= 16V to 22V
3.0
60.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
12.0
100
mV
(Note 30)
I
O
= 5mA to 1mA
12.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.1
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 14V to 27V, I
O
= 500mA
0.8
V
I
= 15V to 30V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 31)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 31)
RR
f = 120Hz, I
O
= 500mA, V
I
= 14V to 24V
60.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 31)
rO
f = 1KHz
18.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 31)
I
PK
T
J
=
25
q
C
2.2
A
www.fairchildsemi.com
14
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7815A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 23V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 32: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 33: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
14.75
15.0
15.3
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 17.7V to 30V
14.4
15.0
15.6
Line Regulation
Regline
V
I
= 17.4V to 30V, I
O
= 500mA
10.0
150
mV
(Note 32)
V
I
= 20V to 26V
5.0
150
T
J
=
25
q
C
V
I
= 17.5V to 30V
11.0
150
V
I
= 20V to 26V
3.0
75.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
12.0
100
mV
(Note 32)
I
O
= 5mA to 1mA
12.0
100
I
O
= 250mA to 750mA
5.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 17.5V to 30V, I
O
= 500mA
0.8
V
I
= 17.5V to 30V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 33)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 33)
RR
f = 120Hz, I
O
= 500mA, V
I
= 18.5V to 28.5V
58.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 33)
rO
f = 1KHz
19.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 33)
I
PK
T
J
=
25
q
C
2.2
A
15
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Electrical Characteristics (LM7818A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 27V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 34: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 35: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
17.64
18.0
18.36
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 21V to 33V
17.3
18.0
18.7
Line Regulation
Regline
V
I
= 21V to 33V, I
O
= 500mA
15.0
180
mV
(Note 34)
V
I
= 21V to 33V
5.0
180
T
J
=
25
q
C
V
I
= 20.6V to 33V
15.0
180
V
I
= 24V to 30V
5.0
90.0
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
15.0
100
mV
(Note 34)
I
O
= 5mA to 1mA
15.0
100
I
O
= 250mA to 750mA
7.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 12V to 33V, I
O
= 500mA
0.8
V
I
= 12V to 33V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 35)
'
V
O
/
'
T
I
O
= 5mA
1.0
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 35)
RR
f = 120Hz, I
O
= 500mA, V
I
= 22V to 32V
57.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 35)
rO
f = 1KHz
19.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 35)
I
PK
T
J
=
25
q
C
2.2
A
www.fairchildsemi.com
16
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Electrical Characteristics (LM7824A)
(Refer to the test circuits. 0
q
C
T
J
125
q
C, I
O
= 1A, V
I
= 33V, C
I
= 0.33
P
F, C
O
= 0.1
P
F, unless otherwise specified)
Note 36: Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account separately. Pulse testing with
low duty is used.
Note 37: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
V
O
T
J
=
25
q
C
23.5
24.0
24.5
V
I
O
= 5mA to 1A, P
O
d
15W, V
I
= 27.3V to 38V
23.0
24.0
25.0
Line Regulation
Regline
V
I
= 27V to 38V, I
O
= 500mA
18.0
240
mV
(Note 36)
V
I
= 21V to 33V
6.0
240
T
J
=
25
q
C
V
I
= 26.7V to 38V
18.0
240
V
I
= 30V to 36V
6.0
120
Load Regulation
Regload
T
J
=
25
q
C, I
O
= 5mA to 1.5mA
15.0
100
mV
(Note 36)
I
O
= 5mA to 1mA
15.0
100
I
O
= 250mA to 750mA
7.0
50.0
Quiescent Current
I
Q
T
J
=
25
q
C
5.2
6.0
mA
Quiescent Current Change
'
I
Q
I
O
= 5mA to 1A
0.5
mA
V
I
= 27.3V to 38V, I
O
= 500mA
0.8
V
I
= 27.3V to 38V, T
J
=
25
q
C
0.8
Output Voltage Drift (Note 37)
'
V
O
/
'
T
I
O
= 5mA
1.5
mV/
q
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=
25
q
C
10.0
P
V/V
O
Ripple Rejection (Note 37)
RR
f = 120Hz, I
O
= 500mA, V
I
= 28V to 38V
54.0
dB
Dropout Voltage
V
DROP
I
O
= 1A, T
J
=
25
q
C
2.0
V
Output Resistance (Note 37)
rO
f = 1KHz
20.0
m
:
Short Circuit Current
I
SC
V
I
= 35V, T
A
=
25
q
C
250
mA
Peak Current (Note 37)
I
PK
T
J
=
25
q
C
2.2
A
17
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Typical Performance Characteristics
FIGURE 1. Quiescent Current
FIGURE 2. Peak Output Current
FIGURE 3. Output Voltage
FIGURE 4. Quiescent Current
www.fairchildsemi.com
18
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Typical Applications
FIGURE 5. DC Parameters
FIGURE 6. Load Regulation
FIGURE 7. Ripple Rejection
FIGURE 8. Fixed Output Regulator
19
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Typical Applications (continued)
FIGURE 9.
Note: To specify an output voltage, substitute voltage value for "XX". A common ground is required between the Input and the Output voltage. The input voltage must remain typ-
ically 2.0V above the output voltage even during the low point on the input ripple voltage.
Note: C
I
is required if regulator is located an appreciable distance from the power supply filter.
Note: C
O
improves stability and transient response.
I
RI
t
5 I
Q
V
O
= V
XX
(1 R
2
/ R
1
)
I
Q
R
2
FIGURE 10. Circuit for Increasing Output Voltage
I
RI
t
5 I
Q
V
O
= V
XX
(1 R
2
/ R
1
)
I
Q
R
2
FIGURE 11. Adjustable Output Regulator (7V to 30V)
www.fairchildsemi.com
20
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Typical Applications (continued)
FIGURE 12. High Current Voltage Regulator
FIGURE 13. High Output Current with Short Circuit Protection
FIGURE 14. Tracking Voltage Regulator
21
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A
Typical Applications (continued)
FIGURE 15. Split Power Supply (
r
15V - 1A)
FIGURE 16. Negative Output Voltage Circuit
FIGURE 17. Switching Regulator
www.fairchildsemi.com
22
LM7
8
0
5
LM7
8
0
6
LM
7
808
LM
78
09
LM
78
10
LM
78
12
LM
78
15
LM
78
18
LM78
2
4
LM7
8
0
5
A
LM7
8
0
6
A
LM
78
08
A
LM
7
8
0
9
A
LM
78
10A
LM7
8
1
2
A
LM
78
15
A
LM
78
18A
LM7
8
2
4
A
Physical Dimensions
inches (millimeters) unless otherwise noted
Package Number TO-220
23
www.fairchildsemi.com
LM
78
05
LM
780
6
LM7
8
0
8
LM
7
809
LM
78
10
LM
78
12
LM
781
5
LM7
8
1
8
LM7
8
2
4
LM
78
05
A
LM
78
06A
LM7
8
0
8
A
L
M7
80
9A
LM
78
10
A
LM78
1
2
A
LM7
8
1
5
A
LM
78
18
A
LM78
2
4
A 3
-
T
e
r
m
i
nal
1A
P
o
s
i
ti
ve
V
o
l
t
a
g
e Re
gul
at
or
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT
CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be reason-
ably expected to cause the failure of the life support device
or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of terms
Datasheet Identification Product Status
Definition
Advance Information
Formative or In Design
This datasheet contains the design specifications for product develop-
ment. Specifications may change in any manner without notice.
Preliminary
First Production
This datasheet contains preliminary data, and supplementary data will
be published at a later date. Fairchild Semiconductor reserves the right
to make changes at any time without notice in order to improve design.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice in order
to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product that has been dis-
continued by Fairchild Semiconductor. The datasheet is printed for ref-
erence information only.
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