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A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056J MAY 1976 REVISED MAY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
3-Terminal Regulators
D
Output Current up to 1.5 A
D
Internal Thermal-Overload Protection
D
High Power-Dissipation Capability
D
Internal Short-Circuit Current Limiting
D
Output Transistor Safe-Area Compensation
KTE PACKAGE
(TOP VIEW)
OUTPUT
COMMON
INPUT
COMMON
OUTPUT
KC (TO-220) PACKAGE
(TOP VIEW)
INPUT
COMMON
COMMON
OUTPUT
KCS (TO-220) PACKAGE
(TOP VIEW)
INPUT
COMMON
COMMON
description/ordering information
This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications.
These applications include on-card regulation for elimination of noise and distribution problems associated with
single-point regulation. Each of these regulators can deliver up to 1.5 A of output current. The internal
current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload.
In addition to use as fixed-voltage regulators, these devices can be used with external components to obtain
adjustable output voltages and currents, and also can be used as the power-pass element in precision
regulators.
ORDERING INFORMATION
TJ
VO(NOM)
(V)
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
POWER-FLEX (KTE)
Reel of 2000
A7805CKTER
A7805C
5
TO-220 (KC)
Tube of 50
A7805CKC
A7805C
TO-220, short shoulder (KCS)
Tube of 20
A7805CKCS
A7805C
POWER-FLEX (KTE)
Reel of 2000
A7808CKTER
A7808C
8
TO-220 (KC)
Tube of 50
A7808CKC
A7808C
TO-220, short shoulder (KCS)
Tube of 20
A7808CKCS
A7808C
10
POWER-FLEX (KTE)
Reel of 2000
A7810CKTER
A7810C
0
C to 125
C
10
TO-220 (KC)
Tube of 50
A7810CKC
A7810C
0
C to 125
C
POWER-FLEX (KTE)
Reel of 2000
A7812CKTER
A7812C
12
TO-220 (KC)
Tube of 50
A7812CKC
A7812C
TO-220, short shoulder (KCS)
Tube of 20
A7812CKCS
A7812C
POWER-FLEX (KTE)
Reel of 2000
A7815CKTER
A7815C
15
TO-220 (KC)
Tube of 50
A7815CKC
A7815C
TO-220, short shoulder (KCS)
Tube of 20
A7815CKCS
A7815C
24
POWER-FLEX (KTE)
Reel of 2000
A7824CKTER
A7824C
24
TO-220 (KC)
Tube of 50
A7824CKC
A7824C
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056J MAY 1976 REVISED MAY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematic
INPUT
OUTPUT
COMMON
absolute maximum ratings over virtual junction temperature range (unless otherwise noted)
Input voltage, V
I
:
A7824C
40 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All others
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, T
J
150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
package thermal data (see Note 1)
PACKAGE
BOARD
JC
JA
POWER-FLEX (KTE)
High K, JESD 51-5
3
C/W
23
C/W
TO-220 (KC/KCS)
High K, JESD 51-5
3
C/W
19
C/W
NOTE 1: Maximum power dissipation is a function of TJ(max),
JA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) TA)/
JA. Operating at the absolute maximum TJ of 150
C can affect reliability.
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056J MAY 1976 REVISED MAY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
MAX
UNIT
A7805C
7
25
A7808C
10.5
25
VI
Input voltage
A7810C
12.5
28
V
VI
Input voltage
A7812C
14.5
30
V
A7815C
17.5
30
A7824C
27
38
IO
Output current
1.5
A
TJ
Operating virtual junction temperature
A7800C series
0
125
C
electrical characteristics at specified virtual junction temperature, V
I
= 10 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A7805C
UNIT
PARAMETER
TEST CONDITIONS
TJ
MIN
TYP
MAX
UNIT
Output voltage
IO = 5 mA to 1 A,
VI = 7 V to 20 V,
25
C
4.8
5
5.2
V
Output voltage
O
,
PD
15 W
I
,
0
C to 125
C
4.75
5.25
V
Input voltage regulation
VI = 7 V to 25 V
25
C
3
100
mV
Input voltage regulation
VI = 8 V to 12 V
25
C
1
50
mV
Ripple rejection
VI = 8 V to 18 V,
f = 120 Hz
0
C to 125
C
62
78
dB
Output voltage regulation
IO = 5 mA to 1.5 A
25
C
15
100
mV
Output voltage regulation
IO = 250 mA to 750 mA
25
C
5
50
mV
Output resistance
f = 1 kHz
0
C to 125
C
0.017
Temperature coefficient of output voltage
IO = 5 mA
0
C to 125
C
1.1
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
25
C
40
V
Dropout voltage
IO = 1 A
25
C
2
V
Bias current
25
C
4.2
8
mA
Bias current change
VI = 7 V to 25 V
0
C t 125
C
1.3
mA
Bias current change
IO = 5 mA to 1 A
0
C to 125
C
0.5
mA
Short-circuit output current
25
C
750
mA
Peak output current
25
C
2.2
A
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
F capacitor across the input and a 0.1-
F capacitor across the output.
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056J MAY 1976 REVISED MAY 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 14 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A7808C
UNIT
PARAMETER
TEST CONDITIONS
TJ
MIN
TYP
MAX
UNIT
Output voltage
IO = 5 mA to 1 A,
VI = 10.5 V to 23 V,
25
C
7.7
8
8.3
V
Output voltage
O
,
PD
15 W
I
,
0
C to 125
C
7.6
8.4
V
Input voltage regulation
VI = 10.5 V to 25 V
25
C
6
160
mV
Input voltage regulation
VI = 11 V to 17 V
25
C
2
80
mV
Ripple rejection
VI = 11.5 V to 21.5 V,
f = 120 Hz
0
C to 125
C
55
72
dB
Output voltage regulation
IO = 5 mA to 1.5 A
25
C
12
160
mV
Output voltage regulation
IO = 250 mA to 750 mA
25
C
4
80
mV
Output resistance
f = 1 kHz
0
C to 125
C
0.016
Temperature coefficient of output voltage
IO = 5 mA
0
C to 125
C
0.8
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
25
C
52
V
Dropout voltage
IO = 1 A
25
C
2
V
Bias current
25
C
4.3
8
mA
Bias current change
VI = 10.5 V to 25 V
0
C to 125
C
1
mA
Bias current change
IO = 5 mA to 1 A
0
C to 125
C
0.5
mA
Short-circuit output current
25
C
450
mA
Peak output current
25
C
2.2
A
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
F capacitor across the input and a 0.1-
F capacitor across the output.
electrical characteristics at specified virtual junction temperature, V
I
= 17 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A7810C
UNIT
PARAMETER
TEST CONDITIONS
TJ
MIN
TYP
MAX
UNIT
Output voltage
IO = 5 mA to 1 A,
VI = 12.5 V to 25 V,
25
C
9.6
10
10.4
V
Output voltage
O
,
PD
15 W
I
,
0
C to 125
C
9.5
10
10.5
V
Input voltage regulation
VI = 12.5 V to 28 V
25
C
7
200
mV
Input voltage regulation
VI = 14 V to 20 V
25
C
2
100
mV
Ripple rejection
VI = 13 V to 23 V,
f = 120 Hz
0
C to 125
C
55
71
dB
Output voltage regulation
IO = 5 mA to 1.5 A
25
C
12
200
mV
Output voltage regulation
IO = 250 mA to 750 mA
25
C
4
100
mV
Output resistance
f = 1 kHz
0
C to 125
C
0.018
Temperature coefficient of output voltage
IO = 5 mA
0
C to 125
C
1
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
25
C
70
V
Dropout voltage
IO = 1 A
25
C
2
V
Bias current
25
C
4.3
8
mA
Bias current change
VI = 12.5 V to 28 V
0
C to 125
C
1
mA
Bias current change
IO = 5 mA to 1 A
0
C to 125
C
0.5
mA
Short-circuit output current
25
C
400
mA
Peak output current
25
C
2.2
A
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
F capacitor across the input and a 0.1-
F capacitor across the output.
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056J MAY 1976 REVISED MAY 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 19 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A7812C
UNIT
PARAMETER
TEST CONDITIONS
TJ
MIN
TYP
MAX
UNIT
Output voltage
IO = 5 mA to 1 A,
VI = 14.5 V to 27 V,
25
C
11.5
12
12.5
V
Output voltage
O
,
PD
15 W
I
,
0
C to 125
C
11.4
12.6
V
Input voltage regulation
VI = 14.5 V to 30 V
25
C
10
240
mV
Input voltage regulation
VI = 16 V to 22 V
25
C
3
120
mV
Ripple rejection
VI = 15 V to 25 V,
f = 120 Hz
0
C to 125
C
55
71
dB
Output voltage regulation
IO = 5 mA to 1.5 A
25
C
12
240
mV
Output voltage regulation
IO = 250 mA to 750 mA
25
C
4
120
mV
Output resistance
f = 1 kHz
0
C to 125
C
0.018
Temperature coefficient of output voltage
IO = 5 mA
0
C to 125
C
1
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
25
C
75
V
Dropout voltage
IO = 1 A
25
C
2
V
Bias current
25
C
4.3
8
mA
Bias current change
VI = 14.5 V to 30 V
0
C t 125
C
1
mA
Bias current change
IO = 5 mA to 1 A
0
C to 125
C
0.5
mA
Short-circuit output current
25
C
350
mA
Peak output current
25
C
2.2
A
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
F capacitor across the input and a 0.1-
F capacitor across the output.
electrical characteristics at specified virtual junction temperature, V
I
= 23 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A7815C
UNIT
PARAMETER
TEST CONDITIONS
TJ
MIN
TYP
MAX
UNIT
Output voltage
IO = 5 mA to 1 A,
VI = 17.5 V to 30 V,
25
C
14.4
15
15.6
V
Output voltage
O
,
PD
15 W
I
,
0
C to 125
C
14.25
15.75
V
Input voltage regulation
VI = 17.5 V to 30 V
25
C
11
300
mV
Input voltage regulation
VI = 20 V to 26 V
25
C
3
150
mV
Ripple rejection
VI = 18.5 V to 28.5 V,
f = 120 Hz
0
C to 125
C
54
70
dB
Output voltage regulation
IO = 5 mA to 1.5 A
25
C
12
300
mV
Output voltage regulation
IO = 250 mA to 750 mA
25
C
4
150
mV
Output resistance
f = 1 kHz
0
C to 125
C
0.019
Temperature coefficient of output voltage
IO = 5 mA
0
C to 125
C
1
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
25
C
90
V
Dropout voltage
IO = 1 A
25
C
2
V
Bias current
25
C
4.4
8
mA
Bias current change
VI = 17.5 V to 30 V
0
C to 125
C
1
mA
Bias current change
IO = 5 mA to 1 A
0
C to 125
C
0.5
mA
Short-circuit output current
25
C
230
mA
Peak output current
25
C
2.1
A
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
F capacitor across the input and a 0.1-
F capacitor across the output.