Fairchild LM7812CT 3-terminal 1a positive voltage regulator Datasheet

LM78XX/LM78XXA
3-Terminal 1A Positive Voltage Regulator
Features
General Description
■ Output Current up to 1A
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 indestructible. 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.
■ Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24
■ Thermal Overload Protection
■ Short Circuit Protection
■ Output Transistor Safe Operating Area Protection
Ordering Information
Product Number
Output Voltage Tolerance
Package
Operating Temperature
±4%
TO-220
-40°C to +125°C
LM7805CT
LM7806CT
LM7808CT
LM7809CT
LM7810CT
LM7812CT
LM7815CT
LM7818CT
LM7824CT
LM7805ACT
±2%
0°C to +125°C
LM7806ACT
LM7808ACT
LM7809ACT
LM7810ACT
LM7812ACT
LM7815ACT
LM7818ACT
LM7824ACT
©2006 Fairchild Semiconductor Corporation
LM78XX/LM78XXA Rev. 1.0
1
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
March 2008
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Block Diagram
Input
Series Pass
Element
1
Current
Generator
Starting
Circuit
Output
3
SOA
Protection
Reference
Voltage
Error
Amplifier
Thermal
Protection
GND
2
Figure 1.
Pin Assignment
TO-220
GND
1. Input
2. GND
3. Output
1
Figure 2.
Absolute Maximum Ratings
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
specifications.
Symbol
VI
Parameter
Input Voltage
Value
Unit
VO = 5V to 18V
35
V
VO = 24V
40
V
RθJC
Thermal Resistance Junction-Cases (TO-220)
5
°C/W
RθJA
Thermal Resistance Junction-Air (TO-220)
65
°C/W
TOPR
Operating Temperature
Range
-40 to +125
°C
TSTG
LM78xx
LM78xxA
Storage Temperature Range
-65 to +150
2
LM78XX/LM78XXA Rev. 1.0
0 to +125
°C
www.fairchildsemi.com
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 10V, CI = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Min.
Typ.
Max.
Unit
TJ = +25°C
4.8
5.0
5.2
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 7V to 20V
4.75
5.0
5.25
VO = 7V to 25V
–
4.0
100
VI = 8V to 12V
–
1.6
50.0
IO = 5mA to 1.5A
–
9.0
100
IO = 250mA to 750mA
–
4.0
50.0
–
5.0
8.0
mA
Quiescent Current Change IO = 5mA to 1A
–
0.03
0.5
mA
VI = 7V to 25V
–
0.3
1.3
IO = 5mA
–
-0.8
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
42.0
–
µV/VO
62.0
73.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
15.0
–
mΩ
VI = 35V, TA = +25°C
–
230
–
mA
TJ = +25°C
–
2.2
–
A
Output Voltage
Line Regulation(1)
Regload Load
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Regulation(1)
Quiescent Current
Output Voltage
Drift(2)
Output Noise Voltage
Ripple
Rejection(2)
Dropout Voltage
Resistance(2)
rO
Output
ISC
Short Circuit Current
IPK
(2)
Peak Current
Conditions
TJ = +25°C
TJ = +25°C
TJ = +25°C
f = 120Hz, VO = 8V to 18V
mV
mV
Notes:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
2. These parameters, although guaranteed, are not 100% tested in production.
3
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7805)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 11V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
Parameter
Conditions
Output Voltage
Line Regulation(3)
Min
Typ.
Max.
Unit
TJ = +25°C
5.75
6.0
6.25
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 8.0V to 21V
5.7
6.0
6.3
VI = 8V to 25V
–
5.0
120
VI = 9V to 13V
–
1.5
60.0
IO = 5mA to 1.5A
–
9.0
120
IO = 250mA to 750mA
–
3.0
60.0
TJ = +25°C
(3)
Load Regulation
TJ = +25°C
mV
mV
IQ
Quiescent Current
TJ = +25°C
–
5.0
8.0
mA
∆IQ
Quiescent Current
Change
IO = 5mA to 1A
–
–
0.5
mA
VI = 8V to 25V
–
–
1.3
Output Voltage Drift
IO = 5mA
–
-0.8
–
mV/°C
Output Noise Voltage
f = 10Hz to 100kHz, TA = +25°C
–
45.0
–
µV/VO
62.0
73.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
19.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
∆VO/∆T
VN
RR
VDROP
(4)
Ripple
Rejection(4)
Dropout Voltage
Resistance(4)
rO
Output
ISC
Short Circuit Current
IPK
Current(4)
Peak
f = 120Hz, VO = 8V to 18V
Notes:
3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
4. These parameters, although guaranteed, are not 100% tested in production.
4
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7806) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 14V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(5)
(5)
Regload Load Regulation
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
7.7
8.0
8.3
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 10.5V to 23V
7.6
8.0
8.4
VI = 10.5V to 25V
–
5.0
160
VI = 11.5V to 17V
–
2.0
80.0
IO = 5mA to 1.5A
–
10.0
160
IO = 250mA to 750mA
–
5.0
80.0
TJ = +25°C
TJ = +25°C
mV
mV
Quiescent Current
TJ = +25°C
–
5.0
8.0
mA
Quiescent Current Change
IO = 5mA to 1A
–
0.05
0.5
mA
VI = 10.5V to 25V
–
0.5
1.0
IO = 5mA
–
-0.8
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
52.0
–
µV/VO
f = 120Hz, VO = 11.5V to 21.5V
56.0
73.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
17.0
–
mΩ
VI = 35V, TA = +25°C
–
230
–
mA
TJ = +25°C
–
2.2
–
A
Output Voltage
Drift(6)
Output Noise Voltage
Ripple
Rejection(6)
Dropout Voltage
Resistance(6)
rO
Output
ISC
Short Circuit Current
IPK
Current(6)
Peak
Notes:
5. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
6. These parameters, although guaranteed, are not 100% tested in production.
5
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7808) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(7)
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
8.65
9.0
9.35
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 11.5V to 24V
8.6
9.0
9.4
–
6.0
180
–
2.0
90.0
–
12.0
180
–
4.0
90.0
–
5.0
8.0
mA
–
–
0.5
mA
VI = 11.5V to 26V
–
–
1.3
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
58.0
–
µV/VO
56.0
71.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
17.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
TJ = +25°C VI = 11.5V to 25V
VI = 12V to 17V
(7)
Regload Load Regulation
TJ = +25°C IO = 5mA to 1.5A
IO = 250mA to 750mA
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Quiescent Current
TJ = +25°C
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(8)
Output Noise Voltage
Ripple
Rejection(8)
Dropout Voltage
Resistance(8)
rO
Output
ISC
Short Circuit Current
IPK
Current(8)
Peak
f = 120Hz, VO = 13V to 23V
mV
mV
Notes:
7. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
8. These parameters, although guaranteed, are not 100% tested in production.
6
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7809) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
Min.
Typ.
Max.
Unit
TJ = +25°C
9.6
10.0
10.4
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 12.5V to 25V
9.5
10.0
10.5
VI = 12.5V to 25V
–
10.0
200
VI = 13V to 25V
–
3.0
100
IO = 5mA to 1.5A
–
12.0
200
IO = 250mA to 750mA
–
4.0
400
–
5.1
8.0
mA
–
–
0.5
mA
VI = 12.5V to 29V
–
–
1.0
Output Voltage Drift(10)
IO = 5mA
–
-1.0
–
mV/°C
VN
Output Noise Voltage
f = 10Hz to 100kHz, TA = +25°C
–
58.0
–
µV/VO
RR
Ripple Rejection(10)
f = 120Hz, VO = 13V to 23V
56.0
71.0
–
dB
Dropout Voltage
IO = 1A, TJ = +25°C
–
2.0
–
V
rO
Output Resistance(10)
f = 1kHz
–
17.0
–
mΩ
ISC
Short Circuit Current
VI = 35V, TA = +25°C
–
250
–
mA
IPK
Peak Current(10)
TJ = +25°C
–
2.2
–
A
VO
Regline
Parameter
Output Voltage
Line Regulation(9)
Regload Load Regulation(9)
IQ
∆IQ
∆VO/∆T
VDROP
Quiescent Current
Conditions
TJ = +25°C
TJ = +25°C
TJ = +25°C
Quiescent Current Change IO = 5mA to 1A
mV
mV
Notes:
9. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
10. These parameters, although guaranteed, are not 100% tested in production.
7
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7810) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(11)
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
11.5
12.0
12.5
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 14.5V to 27V
11.4
12.0
12.6
–
10.0
240
–
3.0
120
–
11.0
240
–
5.0
120
–
5.1
8.0
mA
–
0.1
0.5
mA
VI = 14.5V to 30V
–
0.5
1.0
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
76.0
–
µV/VO
55.0
71.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
18.0
–
mΩ
VI = 35V, TA = +25°C
–
230
–
mA
TJ = +25°C
–
2.2
–
A
TJ = +25°C VI = 14.5V to 30V
VI = 16V to 22V
Regload
(11)
Load Regulation
TJ = +25°C IO = 5mA to 1.5A
IO = 250mA to 750mA
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Quiescent Current
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(12)
Output Noise Voltage
Ripple
Rejection(12)
Dropout Voltage
Resistance(12)
rO
Output
ISC
Short Circuit Current
IPK
TJ = +25°C
Peak
Current(12)
f = 120Hz, VI = 15V to 25V
mV
mV
Notes:
11. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
12. These parameters, although guaranteed, are not 100% tested in production.
8
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7812) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(13)
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
14.4
15.0
15.6
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 17.5V to 30V
14.25
15.0
15.75
–
11.0
300
–
3.0
150
–
12.0
300
–
4.0
150
–
5.2
8.0
mA
–
–
0.5
mA
VI = 17.5V to 30V
–
–
1.0
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
90.0
–
µV/VO
f = 120Hz, VI = 18.5V to 28.5V
54.0
70.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
19.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
TJ = +25°C VI = 17.5V to 30V
VI = 20V to 26V
(13)
Regload Load Regulation
TJ = +25°C IO = 5mA to 1.5A
IO = 250mA to 750mA
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Quiescent Current
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(14)
Output Noise Voltage
Ripple
Rejection(14)
Dropout Voltage
Resistance(14)
rO
Output
ISC
Short Circuit Current
IPK
TJ = +25°C
Peak
Current(14)
mV
mV
Notes:
13. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
14. These parameters, although guaranteed, are not 100% tested in production.
9
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7815) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 27V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Min.
Typ.
Max.
Unit
TJ = +25°C
17.3
18.0
18.7
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 21V to 33V
17.1
18.0
18.9
TJ = +25°C VI = 21V to 33V
–
15.0
360
VI = 24V to 30V
–
5.0
180
–
15.0
360
–
5.0
180
–
5.2
8.0
mA
Quiescent Current Change IO = 5mA to 1A
–
–
0.5
mA
VI = 21V to 33V
–
–
1.0
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
110
–
µV/VO
53.0
69.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
22.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Output Voltage
Line Regulation(15)
(15)
Regload Load Regulation
Conditions
TJ = +25°C IO = 5mA to 1.5A
IO = 250mA to 750mA
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Quiescent Current
Output Voltage
Drift(16)
Output Noise Voltage
Ripple
Rejection(16)
Dropout Voltage
Resistance(16)
rO
Output
ISC
Short Circuit Current
IPK
Peak
Current(16)
TJ = +25°C
f = 120Hz, VI = 22V to 32V
mV
mV
Notes:
15. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
16. These parameters, although guaranteed, are not 100% tested in production.
10
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7818) (Continued)
Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Min.
Typ.
Max.
Unit
TJ = +25°C
23.0
24.0
25.0
V
5mA ≤ IO ≤ 1A, PO ≤ 15W,
VI = 27V to 38V
22.8
24.0
25.25
VI = 27V to 38V
–
17.0
480
VI = 30V to 36V
–
6.0
240
IO = 5mA to 1.5A
–
15.0
480
IO = 250mA to 750mA
–
5.0
240
–
5.2
8.0
mA
Quiescent Current Change IO = 5mA to 1A
–
0.1
0.5
mA
VI = 27V to 38V
–
0.5
1.0
IO = 5mA
–
-1.5
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
60.0
–
µV/VO
50.0
67.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
Output Voltage
Line Regulation(17)
(17)
Regload Load Regulation
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Quiescent Current
Output Voltage
TJ = +25°C
TJ = +25°C
TJ = +25°C
Drift(18)
Output Noise Voltage
Ripple
Conditions
Rejection(18)
Dropout Voltage
(18)
f = 120Hz, VI = 28V to 38V
mV
mV
rO
Output Resistance
f = 1kHz
–
28.0
–
mΩ
ISC
Short Circuit Current
VI = 35V, TA = +25°C
–
230
–
mA
TJ = +25°C
–
2.2
–
A
IPK
Peak
Current(18)
Notes:
17. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
18. These parameters, although guaranteed, are not 100% tested in production.
11
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7824) (Continued)
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(19)
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
4.9
5.0
5.1
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 7.5V to 20V
4.8
5.0
5.2
VI = 7.5V to 25V, IO = 500mA
–
5.0
50.0
VI = 8V to 12V
–
3.0
50.0
VI = 7.3V to 20V
–
5.0
50.0
VI = 8V to 12V
–
1.5
25.0
TJ = +25°C, IO = 5mA to 1.5A
–
9.0
100
IO = 5mA to 1A
–
9.0
100
IO = 250mA to 750mA
–
4.0
50.0
TJ = +25°C
(19)
Regload Load Regulation
mV
mV
IQ
Quiescent Current
TJ = +25°C
–
5.0
6.0
mA
∆IQ
Quiescent Current
Change
IO = 5mA to 1A
–
–
0.5
mA
VI = 8V to 25V, IO = 500mA
–
–
0.8
VI = 7.5V to 20V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-0.8
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA, VI = 8V to 18V
–
68.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
17.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
∆VO/∆T
VN
RR
VDROP
Output Voltage
Drift(20)
Output Noise Voltage
Ripple
Rejection(20)
Dropout Voltage
Resistance(20)
rO
Output
ISC
Short Circuit Current
IPK
Peak
Current(20)
Notes:
19. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
20. These parameters, although guaranteed, are not 100% tested in production.
12
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7805A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Parameter
Output Voltage
Line Regulation(21)
(21)
Load Regulation
Quiescent Current
Min.
Typ.
Max.
Unit
TJ = +25°C
5.58
6.0
6.12
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 8.6V to 21V
5.76
6.0
6.24
VI = 8.6V to 25V, IO = 500mA
–
5.0
60.0
VI = 9V to 13V
–
3.0
60.0
TJ = +25°C
VI = 8.3V to 21V
–
5.0
60.0
VI = 9V to 13V
–
1.5
30.0
TJ = +25°C, IO = 5mA to 1.5A
–
9.0
100
IO = 5mA to 1A
–
9.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
–
4.3
6.0
mA
–
–
0.5
mA
VI = 19V to 25V, IO = 500mA
–
–
0.8
VI = 8.5V to 21V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-0.8
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA, VI = 9V to 19V
–
65.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
17.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(22)
Output Noise Voltage
Ripple
Rejection(22)
Dropout Voltage
Resistance(22)
rO
Output
ISC
Short Circuit Current
IPK
Conditions
Peak
Current(22)
mV
mV
Notes:
21. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
22. These parameters, although guaranteed, are not 100% tested in production.
13
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7806A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 11V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Parameter
Output Voltage
Line Regulation(23)
(23)
Load Regulation
Quiescent Current
Min.
Typ.
Max.
Unit
TJ = +25°C
7.84
8.0
8.16
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 10.6V to 23V
7.7
8.0
8.3
VI = 10.6V to 25V, IO = 500mA
–
6.0
80.0
VI = 11V to 17V
–
3.0
80.0
TJ = +25°C
VI = 10.4V to 23V
–
6.0
80.0
VI = 11V to 17V
–
2.0
40.0
TJ = +25°C, IO = 5mA to 1.5A
–
12.0
100
IO = 5mA to 1A
–
12.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
–
5.0
6.0
mA
–
–
0.5
mA
VI = 11V to 25V, IO = 500mA
–
–
0.8
VI = 10.6V to 23V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-0.8
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA,
VI = 11.5V to 21.5V
–
62.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
18.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(24)
Output Noise Voltage
Ripple
Rejection(24)
Dropout Voltage
Resistance(24)
rO
Output
ISC
Short Circuit Current
IPK
Conditions
Peak
Current(24)
mV
mV
Notes:
23. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
24. These parameters, although guaranteed, are not 100% tested in production.
14
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7808A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 14V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
Min.
Typ.
Max.
Units
TJ = +25°C
8.82
9.0
9.16
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 11.2V to 24V
8.65
9.0
9.35
VI = 11.7V to 25V, IO = 500mA
–
6.0
90.0
VI = 12.5V to 19V
–
4.0
45.0
TJ = +25°C
VI = 11.5V to 24V
–
6.0
90.0
VI = 12.5V to 19V
–
2.0
45.0
TJ = +25°C, IO = 5mA to 1.5A
–
12.0
100
IO = 5mA to 1A
–
12.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
–
5.0
6.0
mA
–
–
0.5
mA
VI = 12V to 25V, IO = 500mA
–
–
0.8
VI = 11.7V to 25V, TJ = +25°C
–
–
0.8
Output Voltage Drift(26)
IO = 5mA
–
-1.0
–
mV/°C
VN
Output Noise Voltage
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
RR
Ripple Rejection(26)
f = 120Hz, IO = 500mA,
VI = 12V to 22V
–
62.0
–
dB
Dropout Voltage
IO = 1A, TJ = +25°C
–
2.0
–
V
rO
Output Resistance(26)
f = 1kHz
–
17.0
–
mΩ
ISC
Short Circuit Current
VI = 35V, TA = +25°C
–
250
–
mA
IPK
Peak Current(26)
TJ = +25°C
–
2.2
–
A
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VDROP
Parameter
Output Voltage
Line Regulation(25)
Load
Regulation(25)
Quiescent Current
Conditions
Quiescent Current Change IO = 5mA to 1A
mV
mV
Notes:
25. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
26. These parameters, although guaranteed, are not 100% tested in production.
15
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7809A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(27)
Conditions
Min.
Typ.
Max.
Units
TJ = +25°C
9.8
10.0
10.2
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 12.8V to 25V
9.6
10.0
10.4
VI = 12.8V to 26V, IO = 500mA
–
8.0
100
VI = 13V to 20V
–
4.0
50.0
VI = 12.5V to 25V
–
8.0
100
VI = 13V to 20V
–
3.0
50.0
TJ = +25°C, IO = 5mA to 1.5A
–
12.0
100
IO = 5mA to 1A
–
12.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
Regload
(27)
Load Regulation
mV
mV
IQ
Quiescent Current
TJ = +25°C
–
5.0
6.0
mA
∆IQ
Quiescent Current
Change
IO = 5mA to 1A
–
–
0.5
mA
VI = 12.8V to 25V, IO = 500mA
–
–
0.8
VI = 13V to 26V, TJ = +25°C
–
–
0.5
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA, VI = 14V to 24V
–
62.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
17.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
∆VO/∆T
VN
RR
VDROP
Output Voltage
Drift(28)
Output Noise Voltage
Ripple
Rejection(28)
Dropout Voltage
Resistance(28)
rO
Output
ISC
Short Circuit Current
IPK
Peak
Current(28)
Notes:
27. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
28. These parameters, although guaranteed, are not 100% tested in production.
16
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7810A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Parameter
Output Voltage
Line Regulation(29)
(29)
Load Regulation
Quiescent Current
Min.
Typ.
Max.
Units
TJ = +25°C
11.75
12.0
12.25
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 14.8V to 27V
11.5
12.0
12.5
VI = 14.8V to 30V, IO = 500mA
–
10.0
120
VI = 16V to 22V
–
4.0
120
TJ = +25°C
VI = 14.5V to 27V
–
10.0
120
VI = 16V to 22V
–
3.0
60.0
TJ = +25°C, IO = 5mA to 1.5A
–
12.0
100
IO = 5mA to 1A
–
12.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
–
5.1
6.0
mA
–
–
0.5
mA
VI = 14V to 27V, IO = 500mA
–
–
0.8
VI = 15V to 30V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA,
VI = 14V to 24V
–
60.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
18.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(30)
Output Noise Voltage
Ripple
Rejection(30)
Dropout Voltage
Resistance(30)
rO
Output
ISC
Short Circuit Current
IPK
Conditions
Peak
Current(30)
mV
mV
Note:
29. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
30. These parameters, although guaranteed, are not 100% tested in production.
17
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7812A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Parameter
Output Voltage
Line Regulation(31)
(31)
Load Regulation
Quiescent Current
Min.
Typ.
Max.
Units
TJ = +25°C
14.75
15.0
15.3
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 17.7V to 30V
14.4
15.0
15.6
VI = 17.4V to 30V, IO = 500mA
–
10.0
150
VI = 20V to 26V
–
5.0
150
TJ = +25°C VI = 17.5V to 30V
–
11.0
150
VI = 20V to 26V
–
3.0
75.0
TJ = +25°C, IO = 5mA to 1.5A
–
12.0
100
IO = 5mA to 1A
–
12.0
100
IO = 250mA to 750mA
–
5.0
50.0
TJ = +25°C
–
5.2
6.0
mA
–
–
0.5
mA
VI = 17.5V to 30V, IO = 500mA
–
–
0.8
VI = 17.5V to 30V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA,
VI = 18.5V to 28.5V
–
58.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
19.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(32)
Output Noise Voltage
Ripple
Rejection(32)
Dropout Voltage
Resistance(32)
rO
Output
ISC
Short Circuit Current
IPK
Conditions
Peak
Current(32)
mV
mV
Notes:
31. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
32. These parameters, although guaranteed, are not 100% tested in production.
18
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7815A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
Parameter
Min.
Typ.
Max.
Units
TJ = +25°C
17.64
18.0
18.36
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 21V to 33V
17.3
18.0
18.7
VI = 21V to 33V, IO = 500mA
–
15.0
180
VI = 21V to 33V
–
5.0
180
TJ = +25°C
VI = 20.6V to 33V
–
15.0
180
VI = 24V to 30V
–
5.0
90.0
TJ = +25°C, IO = 5mA to 1.5A
–
15.0
100
IO = 5mA to 1A
–
15.0
100
IO = 250mA to 750mA
–
7.0
50.0
Quiescent Current
TJ = +25°C
–
5.2
6.0
mA
Quiescent Current Change
IO = 5mA to 1A
–
–
0.5
mA
VI = 12V to 33V, IO = 500mA
–
–
0.8
VI = 12V to 33V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-1.0
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA,
VI = 22V to 32V
–
57.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
19.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
Output Voltage
Line Regulation(33)
(33)
Load Regulation
Output Voltage
Drift(34)
Output Noise Voltage
Ripple
Rejection(34)
Dropout Voltage
Resistance(34)
rO
Output
ISC
Short Circuit Current
IPK
Peak
Current(34)
Conditions
mV
mV
Notes:
33. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
34. These parameters, although guaranteed, are not 100% tested in production.
19
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7818A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 27V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
VO
Regline
Parameter
Output Voltage
Line Regulation(35)
Conditions
Min.
Typ.
Max.
Units
TJ = +25°C
23.5
24.0
24.5
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 27.3V to 38V
23.0
24.0
25.0
VI = 27V to 38V, IO = 500mA
–
18.0
240
VI = 21V to 33V
–
6.0
240
VI = 26.7V to 38V
–
18.0
240
VI = 30V to 36V
–
6.0
120
TJ = +25°C, IO = 5mA to 1.5A
–
15.0
100
IO = 5mA to 1A
–
15.0
100
IO = 250mA to 750mA
–
7.0
50.0
TJ = +25°C
–
5.2
6.0
mA
–
–
0.5
mA
VI = 27.3V to 38V, IO = 500mA
–
–
0.8
VI = 27.3V to 38V, TJ = +25°C
–
–
0.8
IO = 5mA
–
-1.5
–
mV/°C
f = 10Hz to 100kHz, TA = +25°C
–
10.0
–
µV/VO
f = 120Hz, IO = 500mA,
VI = 28V to 38V
–
54.0
–
dB
IO = 1A, TJ = +25°C
–
2.0
–
V
f = 1kHz
–
20.0
–
mΩ
VI = 35V, TA = +25°C
–
250
–
mA
TJ = +25°C
–
2.2
–
A
TJ = +25°C
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDROP
(35)
Load Regulation
Quiescent Current
Quiescent Current Change IO = 5mA to 1A
Output Voltage
Drift(36)
Output Noise Voltage
Ripple
Rejection(36)
Dropout Voltage
Resistance(36)
rO
Output
ISC
Short Circuit Current
IPK
Peak
Current(36)
mV
mV
Notes:
35. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
36. These parameters, although guaranteed, are not 100% tested in production.
20
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7824A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
3
VI = 10V
VO = 5V
IO = 5mA
5.75
TJ = 25°C
∆VO = 100mV
2.5
OUTPUT CURRENT (A)
QUIESCENT CURRENT (mA)
6
5.5
5.25
5
4.75
2
1.5
1
.5
4.5
-50
-25
0
25
50
75
100
0
125
0
JUNCTION TEMPERATURE (°C)
QUIESCENT CURRENT (mA)
NORMALIZED OUTPUT VOLTAGE (V)
7
1.01
1
0.99
-25
0
25
50
75
100
20
25
30
35
TJ = 25°C
VO = 5V
IO = 10mA
6.5
6
5.5
5
4.5
4
125
JUNCTION TEMPERATURE (°C)
5
10
15
20
25
30
35
INPUT VOLTAGE (V)
Figure 5. Output Voltage
Figure 6. Quiescent Current
21
LM78XX/LM78XXA Rev. 1.0
15
Figure 4. Peak Output Current
VI – VO = 5V
IO = 5mA
0.98
-50
10
INPUT-OUTPUT DIFFERENTIAL (V)
Figure 3. Quiescent Current
1.02
5
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Typical Performance Characteristics
1
Input
Output
CO
2
CI
3
LM78XX
0.1µF
0.33µF
Figure 7. DC Parameters
1
3
LM78XX
Input
Output
2
270pF
RL
VO
2N6121
or EQ
0.33µF
0V
VO
30µS
100Ω
Figure 8. Load Regulation
5.1Ω
1
LM78XX
Input
3
Output
0.33µF
2
RL
470µF
120Hz
+
Figure 9. Ripple Rejection
22
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Typical Applications
LM78XX
Input
CI
3
Output
CO
2
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
1
0.1µF
0.33µF
Figure 10. Fixed Output Regulator
1
Input
CI
3
LM78XX
Output
CO
2
0.33µF
V XX
0.1µF
R1
IQ
IO
RL
V XX
IO =
+
R1 IQ
Notes:
1. 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 typically 2.0V above the output voltage even during the low point on the input
ripple voltage.
2. CI is required if regulator is located an appreciable distance from power supply filter.
3. CO improves stability and transient response.
Figure 11.
1
Input
CI
LM78XX
CO
2
0.33µF
Output
3
0.1µF
V XX
R1
IQ
R2
IRI ≥ 5 IQ
VO = VXX(1 + R2 / R1) + IQR2
Figure 12. Circuit for Increasing Output Voltage
23
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
1
LM7805
Output
3
2
CI
0.33µF
CO
- 2
LM741
+ 3
4
6
10kΩ
0.1µF
IRI ≥ 5 IQ
VO = VXX(1 + R2 / R1) + IQR2
Figure 13. Adjustable Output Regulator (7V to 30V)
Q1 BD536
Input
IQ1
R1
1
3Ω
R1 =
LM78XX
IO
IREG
V BEQ1
Output
3
2
0.1µF
0.33µF
IREG–IQ1 BQ1
IO = IREG + BQ1 (IREG–VBEQ1/R1)
Figure 14. High Current Voltage Regulator
Input
Q1
RSC
Q2
R1
1
LM78XX
3
Output
3Ω
0.33µF
Q1 = TIP42
Q2 = TIP42
RSC =
2
0.1µF
V BEQ2
I SC
Figure 15. High Output Current with Short Circuit Protection
24
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Input
3
LM78XX
VI
VO
2
0.33µF
0.1µF
7
COMMON
6
COMMON
2
LM741
4
-VIN
_
4.7kΩ
+
3
4.7kΩ
-VO
TIP42
Figure 16. Tracking Voltage Regulator
1
LM7815
3
+20V
+15V
0.33µF
+
2
0.1µF
1N4001
2.2µF
1µF +
1
2
-20V
1N4001
MC7915
3
-15V
Figure 17. Split Power Supply (±15V – 1A)
25
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
1
Input
+
0.1µF
2
1
3
LM78XX
Figure 18. Negative Output Voltage Circuit
D45H11
Input
1mH
Output
470Ω
4.7Ω
Z1
1
+
0.33µF
LM78XX
3
2
10µF
+
0.5Ω
2000µF
Figure 19. Switching Regulator
26
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Output
Dimensions in millimeters
TO-220
4.50 ±0.20
2.80 ±0.10
(3.00)
+0.10
1.30 –0.05
18.95MAX.
(3.70)
ø3.60 ±0.10
15.90 ±0.20
1.30 ±0.10
(8.70)
(1.46)
9.20 ±0.20
(1.70)
9.90 ±0.20
10.08 ±0.30
(1.00)
13.08 ±0.20
)
(45°
1.27 ±0.10
1.52 ±0.10
0.80 ±0.10
2.54TYP
[2.54 ±0.20]
+0.10
0.50 –0.05
2.40 ±0.20
2.54TYP
[2.54 ±0.20]
10.00 ±0.20
27
LM78XX/LM78XXA Rev. 1.0
www.fairchildsemi.com
LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Mechanical Dimensions
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Definition of Terms
Datasheet Identification
Product Status
Definition
Advance Information
Formative or In
Design
This datasheet contains the design specifications for
product development. 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 discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
Rev. I19
28
LM78XX/LM78XXA Rev. 1.0
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LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
TRADEMARKS