KA78XXE/KA78XXAE — 3-Terminal 1A Positive Voltage Regulator
© 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5 1
August 2012
KA78XXE/KA78XXAE
3-Terminal 1A Positive Voltage Regulator
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
• Thermal Overl o ad Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Ordering Information
* Refer to below figure for TM / TF Suffix for DPAK
Product Number Output Voltage Tolerance Package Operating Temperature
KA7805ETU ±4% TO-220 (Dual Gauge) 0C to +125C
KA7806ETU
KA7808ETU
KA7809ETU
KA7810ETU
KA7812ETU
KA7815ETU
KA7818ETU
KA7824ETU
KA7805AETU ±2%
KA7809AETU
KA7810AETU
KA7812AETU
KA7815AETU
KA7824AETU
KA7805ERTF ±4% D-PAK
KA7805ERTM
KA7808ERTM
KA7809ERTM
KA7812ERTM
General Description
The KA78XXE/KA78XXAE series of three-terminal posi-
tive regulator are available in the TO-220/D-PAK package
and with several fixed output voltages, making them use-
ful in a wide range of applications. Each type employs
internal current limiting, thermal shut down and safe oper-
ating area protection, making it essentiall y 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 exter-
nal components to obtain adjustable voltages and cur-
rents.
TM :
TF :
D-PAK Unit Orientation
2
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KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Block Diagram
Figure 1.
Pin Assignment
Figure 2.
Absolute Maximum Ratings
Symbol Parameter Value Unit
V
I
Input Voltage V
O
= 5V to 18V 35 V
V
O
= 24V 40
R
θ
JC
Thermal Resistance Junction-Cases (TO-220) 5
°
C/W
R
θ
JA
Thermal Resistance Junction-Air (TO-220) 65
°
C/W
T
OPR
Operating Temperature Range (KA78XXE/AE/ER) 0 to +125 °C
T
STG
Storage Temperature Range -65 to +150
°
C
Starting
Circuit
Input
1
Reference
Voltage
Current
Generator
SOA
Protection
Thermal
Protection
Series Pass
Element
Error
Amplifier
Output
3
GND
2
1
1. Input
2. GND
3. Output
1
GND
TO-220 D-PAK
GND
(Dual Gauge)
3
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KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7805E/KA7805ER)
Refer to test circuit, 0°C < T
J
< 125°C, I
O
= 500mA, V
I
= 10V, C
I
= 0.33µF, C
O
= 0.1µF, unless otherwise specified.
Notes:
1. 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.
2. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions
KA7805E/ER
UnitMin. Typ. Max.
V
O
Output Voltage T
J
= +25
°
C4.8 5.0 5.2 V
5.0mA
≤
I
O
≤
1.0A, P
O
≤
15W
V
I
= 7V to 20V
4.75 5.0 5.25
Regline Line Regulation
(1)
T
J
= +25
°
CV
O
= 7V to 25V – 4.0 100 mV
V
I
= 8V to 12V – 1.6 50
Regload Load Regulation
(1)
T
J
= +25
°
CI
O
= 5.0mA to1.5A – 9 100 mV
I
O
= 250mA to 750mA – 4 50
I
Q
Quiescent Current T
J
= +25
°
C–5.0 8.0 mA
∆
I
Q
Quiescent Current Change I
O
= 5mA to 1.0A – 0.03 0.5 mA
V
I
= 7V to 25V – 0.3 1.3
∆
V
O
/
∆
TOutput Voltage Drift
(2)
I
O
= 5mA – -0.8 – mV/
°
C
V
N
Output Noise Voltage f = 10Hz to 100kHz, T
A
= +25
°
C–42–
µ
V/V
O
RR Ripple Rejection
(2)
f = 120Hz, V
O
= 8V to 18V 62 73 – dB
V
Drop
Dropout Voltage I
O
= 1A, T
J
= +25
°
C–2–V
r
O
Output Resistance
(2)
f = 1kHz – 15 – m
Ω
I
SC
Short Circuit Current V
I
= 35V, T
A
= +25
°
C–230 – mA
I
PK
Peak Current
(2)
T
J
= +25
°
C–2.2 – A
4
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KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7806E)
(Continued)
Refer to test circuit, 0°C < T
J
< 125°C, I
O
= 500mA, V
I
= 11V, C
I
= 0.33µF, C
O
= 0.1µF, unless otherwise specified.
Notes:
3. 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.
4. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions
KA7806E/ER
UnitMin. Typ. Max.
V
O
Output Voltage T
J
= +25
°
C 5.75 6.0 6.25 V
5.0mA
≤
I
O
≤
1.0A, P
O
≤
15W
V
I
= 8.0V to 21V
5.7 6.0 6.3
Regline Line Regulation
(3)
T
J
= +25
°
CV
I
= 8V to 25V – 5 120 mV
V
I
= 9V to 13V – 1.5 60
Regload Load Regulation
(3)
T
J
= +25
°
CI
O
= 5mA to 1.5A – 9 120 mV
I
O
= 250mA to 750mA – 3 60
I
Q
Quiescent Current T
J
= +25
°
C–5.0 8.0 mA
∆
I
Q
Quiescent Current Change I
O
= 5mA to 1A – – 0.5 mA
V
I
= 8V to 25V – – 1.3
∆
VO/∆TOutput Voltage Drift(4) IO = 5mA – -0.8 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–45–µV/Vo
RR Ripple Rejection(4) f = 120Hz
VI = 9V to 19V
59 75 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(4) f = 1kHz – 19 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(4) TJ = +25°C–2.2 – A
5www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7808E/KA7808ER) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 14V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7808E/ER
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 7.7 8.0 8.3 V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 10.5V to 23V
7.6 8.0 8.4
Regline Line Regulation(5) TJ = +25°CV
I = 10.5V to 25V – 5.0 160 mV
VI = 11.5V to 17V – 2.0 80
Regload Load Regulation(5) TJ = +25°CI
O = 5.0mA to 1.5A – 10 160 mV
IO = 250mA to 750mA – 5.0 80
IQQuiescent Current TJ = +25°C–5.0 8.0 mA
∆IQQuiescent Current
Change
IO = 5mA to 1.0A – 0.05 0.5 mA
VI = 10.5A to 25V – 0.5 1.0
∆VO/∆TOutput Voltage Drift(6) IO = 5mA – -0.8 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–52–µV/Vo
RR Ripple Rejection(6) f = 120Hz, VI = 11.5V to 21.5V 56 73 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(6) f = 1kHz – 17 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA
IPK Peak Current(6) TJ = +25°C–2.2 – A
6www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7809E/KA7809ER) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7809E/ER
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 8.65 9 9.35 V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 11.5V to 24V
8.6 9 9.4
Regline Line Regulation(7) TJ = +25°CV
I = 11.5V to 25V – 6 180 mV
VI = 12V to 17V – 2 90
Regload Load Regulation(7) TJ = +25°CI
O = 5mA to 1.5A – 12 180 mV
IO = 250mA to 750mA – 4 90
IQQuiescent Current TJ = +25°C–5.0 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA
VI = 11.5V to 26V – – 1.3
∆VO/∆TOutput Voltage Drift(8) IO = 5mA – -1 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–58–µV/Vo
RR Ripple Rejection(8) f = 120Hz
VI = 13V to 23V
56 71 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(8) f = 1kHz – 17 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(8) TJ = +25°C–2.2 – A
7www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7810E) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7810E
UnitMin. Typ. Max.
VOOutput Voltage 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
Regline Line Regulation(9) TJ = +25°CV
I = 12.5V to 25V – 10.0 200 mV
VI = 13V to 25V – 3.0 100
Regload Load Regulation(9) TJ = +25°CI
O = 5mA to 1.5A – 12.0 200 mV
IO = 250mA to 750mA – 4.0 400
IQQuiescent Current TJ = +25°C–5.1 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1A – – 0.5 mA
VI = 12.5V to 29V – – 1.0
∆VO/∆TOutput Voltage Drift(10) IO = 5mA – -1.0 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–58.0 – µV/Vo
RR Ripple Rejection(10) f = 120Hz
VO = 13V to 23V
56.0 71.0 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput 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
8www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7812E/KA7812ER) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7812E/ER
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 11.5 12 12.5 V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 14.5V to 27V
11.4 12 12.6
Regline Line Regulation(11) TJ = +25°CV
I = 14.5V to 30V – 10 240 mV
VI = 16V to 22V – 3.0 120
Regload Load Regulation(11) TJ = +25°CI
O = 5mA to 1.5A – 11 240 mV
IO = 250mA to 750mA – 5.0 120
IQQuiescent Current TJ = +25°C–5.1 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1.0A – 0.1 0.5 mA
VI = 14.5V to 30V – 0.5 1.0
∆VO/∆TOutput Voltage Drift(12) IO = 5mA – -1 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–76–µV/Vo
RR Ripple Rejection(12) f = 120Hz
VI = 15V to 25V
55 71 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(12) f = 1kHz – 18 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA
IPK Peak Current(12) TJ = +25°C–2.2 – A
9www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7815E) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7815E
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 14.4 15 15.6 V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 17.5V to 30V
14.25 15 15.75
Regline Line Regulation(13) TJ = +25°CV
I = 17.5V to 30V – 11 300 mV
VI = 20V to 26V – 3 150
Regload Load Regulation(13) TJ = +25°CI
O = 5mA to 1.5A – 12 300 mV
IO = 250mA to 750mA – 4 150
IQQuiescent Current TJ = +25°C–5.2 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA
VI = 17.5V to 30V – – 1.0
∆VO/∆TOutput Voltage Drift(14) IO = 5mA – -1 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–90–µV/Vo
RR Ripple Rejection(14) f = 120Hz
VI = 18.5V to 28.5V
54 70 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(14) f = 1kHz – 19 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(14) TJ = +25°C–2.2 – A
10 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7818E) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 27V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7818E
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 17.3 18 18.7 V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 21V to 33V
17.1 18 18.9
Regline Line Regulation(15) TJ = +25°CV
I = 21V to 33V – 15 360 mV
VI = 24V to 30V – 5 180
Regload Load Regulation(15) TJ = +25°CI
O = 5mA to 1.5A – 15 360 mV
IO = 250mA to 750mA – 5.0 180
IQQuiescent Current TJ = +25°C–5.2 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA
VI = 21V to 33V – – 1
∆VO/∆TOutput Voltage Drift(16) IO = 5mA – -1 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–110 – µV/Vo
RR Ripple Rejection(16) f = 120Hz
VI = 22V to 32V
53 69 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C – 2 – V
rOOutput Resistance(16) f = 1kHz – 22 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(16) TJ = +25°C–2.2 – A
11 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7824E) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
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.
Symbol Parameter Conditions
KA7824E
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C232425V
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 27V to 38V
22.8 24 25.25
Regline Line Regulation(17) TJ = +25°CV
I = 27V to 38V – 17 480 mV
VI = 30V to 36V – 6 240
Regload Load Regulation(17) TJ = +25°CI
O = 5mA to 1.5A – 15 480 mV
IO = 250mA to 750mA – 5.0 240
IQQuiescent Current TJ = +25°C–5.2 8.0 mA
∆IQQuiescent Current Change IO = 5mA to 1.0A – 0.1 0.5 mA
VI = 27V to 38V – 0.5 1
∆VO/∆TOutput Voltage Drift(18) IO = 5mA – -1.5 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–60–µV/Vo
RR Ripple Rejection(18) f = 120Hz
VI = 28V to 38V
50 67 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(18) f = 1kHz – 28 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA
IPK Peak Current(18) TJ = +25°C–2.2 – A
12 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7805AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
19. Load and line regulation are specified at constant junction temperature. Change 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.
Symbol Parameter Conditions
KA7805AE
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 4.9 5 5.1 V
IO = 5mA to 1A, PO ≤ 15W
VI = 7.5V to 20V
4.8 5 5.2
Regline Line Regulation(19) VI = 7.5V to 25V
IO = 500mA
–550mV
VI = 8V to 12V – 3 50
TJ = +25°CV
I = 7.3V to 20V – 5 50
VI = 8V to 12V – 1.5 25
Regload Load Regulation(19) TJ = +25°C
IO = 5mA to 1.5A
–9100 mV
IO = 5mA to 1A – 9 100
IO = 250mA to 750mA – 4 50
IQQuiescent Current TJ = +25°C–5.0 6.0 mA
∆IQQuiescent Current Change IO = 5mA to 1A – – 0.5 mA
VI = 8 V to 25V, IO = 500mA – – 0.8
VI = 7.5V to 20V, TJ = +25°C– –0.8
∆V/∆TOutput Voltage Drift(20) IO = 5mA – -0.8 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz
TA = +25°C
–10 –µV/Vo
RR Ripple Rejection(20) f = 120Hz, IO = 500mA
VI = 8V to 18V
–68 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V
rOOutput Resistance(20) f = 1kHz – 17 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(20) TJ = +25°C–2.2 – A
13 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7809AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
21. Load and line regulation are specified at constant junction temperature. Change in V
O
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.
Symbol Parameter Conditions
KA7809AE
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 8.82 9.0 9.18 V
IO = 5mA to 1A, PO ≤ 15W
VI = 11.2V to 24V
8.65 9.0 9.35
Regline Line Regulation(21) VI = 11.7V to 25V, IO = 500mA – 6 90 mV
VI = 12.5V to 19V – 4 45
TJ = +25°C VI = 11.5V to 24V – 6 90
VI = 12.5V to 19V – 2 45
Regload Load Regulation(21) TJ = +25°C, IO = 5mA to 1.0A – 12 100 mV
IO = 5mA to 1.0A – 12 100
IO = 250mA to 750mA – 5 50
IQQuiescent Current TJ = +25°C–5.0 6.0 mA
∆IQQuiescent Current Change VI = 11.7V to 25V, TJ = +25°C––0.8 mA
VI = 12V to 25V, IO = 500mA – – 0.8
IO = 5mA to 1.0A – – 0.5
∆V/∆TOutput Voltage Drift(22) IO = 5mA – -1.0 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C– 10 –µV/Vo
RR Ripple Rejection(22) f = 120Hz, IO = 500mA
VI = 12V to 22V
–62 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput Resistance(22) f = 1kHz – 17 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(22) TJ = +25°C–2.2 – A
14 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7810AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
23. Load and line regulation are specified at constant junction temperature. Change in V
O
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.
Symbol Parameter Conditions
KA7810AE
UnitMin. Typ. Max.
VOOutput Voltage 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
Regline Line Regulation(23) VI = 12.8V to 26V, IO = 500mA – 8.0 100 mV
VI = 13V to 20V – 4.0 50.0
TJ = +25°C VI = 12.5V to 25V – 8.0 100
VI = 13V to 20V – 3.0 50.0
Regload Load Regulation(23) TJ = +25°C, IO = 5mA to 1.5A – 12.0 100 mV
IO = 5mA to 1mA – 12.0 100
IO = 250mA to 750mA – 5.0 50.0
IQQuiescent Current TJ = +25°C–5.0 6.0 mA
∆IQQuiescent 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
∆VO/∆TOutput Voltage Drift(24) IO = 5mA – -1.0 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C–10.0 – µV/Vo
RR Ripple Rejection(24) f = 120Hz, IO = 500mA
VI = 14V to 24V
– 62.0 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput Resistance(24) f = 1kHz – 17.0 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(24) TJ = +25°C–2.2 – A
15 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7812AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
25.Load and line regulation are specified at constant junction temperature. Change 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.
Symbol Parameter Conditions
KA7812AE
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 11.75 12 12.25 V
IO = 5mA to 1A, PO ≤ 15W
VI = 14.8V to 27V
11.5 12 12.5
Regline Line Regulation(25) VI = 14.8V to 30V, IO = 500mA – 10 120 mV
VI = 16V to 22V – 4 120
TJ = +25°CV
I = 14.5V to 27V – 10 120
VI = 16V to 22V – 3 60
Regload Load Regulation(25) TJ = +25°C, IO = 5mA to 1.5A – 12 100 mV
IO = 5mA to 1.0A – 12 100
IO = 250mA to 750mA – 5 50
IQQuiescent Current TJ = +25°C–5.1 6.0 mA
∆IQQuiescent Current Change VI = 15V to 30V, TJ = +25°C––0.8 mA
VI = 14V to 27V, IO = 500mA – – 0.8
IO = 5mA to 1.0A – – 0.5
∆V/∆TOutput Voltage Drift(26) IO = 5mA – -1.0 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C– 10 –µV/Vo
RR Ripple Rejection(26) f = 120Hz, IO = 500mA
VI = 14V to 24V
–60 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput Resistance(26) f = 1kHz – 18 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(26) TJ = +25°C–2.2 – A
16 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7815AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
27. Load and line regulation are specified at constant junction temperature. Change in V
O
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.
Symbol Parameter Conditions
KA7815AE
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 14.7 15 15.3 V
IO = 5mA to 1A, PO ≤ 15W
VI = 17.7V to 30V
14.4 15 15.6
Regline Line Regulation(27) VI = 17.9V to 30V, IO = 500mA – 10 150 mV
VI = 20V to 26V – 5 150
TJ = +25°CV
I = 17.5V to 30V – 11 150
VI = 20V to 26V – 3 75
Regload Load Regulation(27) TJ = +25°C, IO = 5mA to 1.5A – 12 100 mV
IO = 5mA to 1.0A – 12 100
IO = 250mA to 750mA – 5 50
IQQuiescent Current TJ = +25°C–5.2 6.0 mA
∆IQQuiescent Current Change VI = 17.5V to 30V, TJ = +25°C––0.8 mA
VI = 17.5V to 30V, IO = 500mA – – 0.8
IO = 5mA to 1.0A – – 0.5
∆V/∆TOutput Voltage Drift(28) IO = 5mA – -1.0 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = +25°C– 10 –µV/Vo
RR Ripple Rejection(28) f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V
–58 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput Resistance(28) f = 1kHz – 19 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(28) TJ = +25°C–2.2 – A
17 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (KA7824AE) (Continued)
Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
29.Load and line regulation are specified at constant junction temperature. Change 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.
Symbol Parameter Conditions
KA7824AE
UnitMin. Typ. Max.
VOOutput Voltage TJ = +25°C 23.5 24 24.5 V
IO = 5mA to 1A, PO ≤ 15W
VI = 27.3V to 38V
23 24 25
Regline Line Regulation(29) VI = 27V to 38V, IO = 500mA – 18 240 mV
VI = 21V to 33V – 6 240
TJ = +25°CV
I = 26.7V to 38V – 18 240
VI = 30V to 36V – 6 120
Regload Load Regulation(29) TJ = +25°C, IO = 5mA to 1.5A – 15 100 mV
IO = 5mA to 1.0A – 15 100
IO = 250mA to 750mA – 7 50
IQQuiescent Current TJ = +25°C–5.2 6.0 mA
∆IQQuiescent Current Change VI = 27.3V to 38V, TJ = +25°C––0.8 mA
VI = 27.3V to 38V, IO = 500mA – – 0.8
IO = 5mA to 1.0A – – 0.5
∆V/∆TOutput Voltage Drift(30) IO = 5mA – -1.5 – mV/°C
VNOutput Noise Voltage f = 10Hz to 100kHz, T
A = 25°C–10–µV/Vo
RR Ripple Rejection(30) f = 120Hz, IO = 500mA
VI = 28V to 38V
–54 – dB
VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V
rOOutput Resistance(30) f = 1kHz – 20 – mΩ
ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA
IPK Peak Current(30) TJ = +25°C–2.2 – A
18 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Typical Performance Characteristics
Figure 3. Quiescent CurrentFigure 4. Peak Output Current
Figure 5. Output Voltage Figure 6. Quiescent Current
6
5.75
5.5
5.25
5
4.75
4.5
VI = 10V
VO = 5V
IO = 5mA
-25-50 0 025 50 75 100 125
QUIESCENT CURRENT (mA)
JUNCTION TEMPERATURE (°C)
3
2.5
2
1.5
1
.5
0
TJ = 25°C
∆VO = 100mV
5101520253035
OUTPUT CURRENT (A)
INPUT-OUTPUT DIFFERENTIAL (V)
1.02
1.01
1
.99
.98
VI – VO = 5V
IO = 5mA
-25-50 0 25 50 75 100 125
NORMALIZED OUTPUT VOLTAGE (V)
JUNCTION TEMPERATURE (°C)
7
6.5
6
5.5
5
4.5
4
TJ = 25°C
VO = 5V
IO = 10mA
1051520253035
QUIESCENT CURRENT (mA)
INPUT VOLTAGE (V)
19 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Typical Applications
Figure 7. DC Parameters
Figure 8. Load Regulation
Figure 9. Ripple Rejection
0.1µF
CO
CI0.33µF
Output
Input
KA78XXE
13
2
KA78XXE 3
2
1
0.33µF
270pF
100Ω30µS
RL
2N6121
OR EQ
Output
Input
VO
0V
VO
KA78XXE
Output
Input
5.1Ω
0.33µF 2
31
RL
470µF
120Hz +
20 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Figure 10. Fixed Output Regulator
Figure 11. Constant Current Regulator
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 12. Circuit for Increasing Output Voltage
0.1µF
CO
CI0.33µF
Output
Input
KA78XXE
13
2
0.1µF
CO
CI0.33µF
Output
Input
KA78XXE
13
2Vxx
R1
RL
IQ
IO
IO = R1 +IQ
Vxx
0.1µF
CO
CI0.33µF
Output
Input
KA78XXE
13
2Vxx R1
R2
IQ
IRI ≥ 51Q
VO = VXX(1 + R2 / R1) + IQR2
21 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Figure 13. Adjustable Output Regulator (7 to 30V)
Figure 14. High Current Voltage Regulator
Figure 15. High Output Current with Short Circuit Protection
KA741
-
+
2
3
6
4
2
3
1
0.33µF
CI
Input Output
0.1µF
CO
KA7805E
10KΩ
IRI ≥ 5 IQ
VO = VXX(1 + R2 / R1) + IQR2
3
2
1KA78XXE
Output
Input
R1
3Ω
0.33µF
IREG
0.1µF
IOVo
IQ1
VI
IO = IREG + BQ1 (IREG–VBEQ1/R1)
KA78XXE
Output
Vo
0.1µF
0.33µF
R1
3Ω
3
2
1
Q1
Input
VI
Q2
Q1 = TIP42
Q2 = TIP42
RSC = I
SC
VBEQ2
R1 = VBEQ1
IREG–IQ1 BQ1
/
22 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Figure 16. Tracking Voltage Regulator
Figure 17. Split Power Supply ( ±15V-1A)
KA78XXE
KA741
0.1µF
0.33µF
1
2
3
72
6
434.7kΩ
4.7kΩ
TIP42
COMMON
COMMON
VO
-VO
VI
-VIN
_
+
3
1
2
1
3
2
0.33µF 0.1µF
2.2µF 1µF +
+
1N4001
1N4001
+15V
-15V
+20V
-20V
KA7815E
KA7915E
23 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Figure 18. Negative Output Voltage Circuit
Figure 19. Switching Regulator
KA78XXE
Output
Input
+
1
2
0.1µF
3
KA78XXE
1mH
3
1
2
2000µF
Output
Input D45H11
0.33uF
470Ω
4.7Ω
10uF
0.5Ω
Z1
+
+
24 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator
Mechanical Dimensions
Dimensions in millimeters
4.50 ±0.20
9.90 ±0.20
1.52 ±0.10
0.80 ±0.10 2.40 ±0.20
10.00 ±0.20
1.27 ±0.10
ø3.60 ±0.10
(8.70)
2.80 ±0.10
15.90 ±0.20
10.08 ±0.30 18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20 ±0.20
13.08 ±0.20
1.30 ±0.10
1.30 +0.10
–0.05
0.50 +0.10
–0.05
2.54TYP
[2.54 ±0.20]
2.54TYP
[2.54 ±0.20]
TO-220 [ DUAL GAUGE ]
KA78XXE/KA78XXAE — 3-Terminal 1A Positive Voltage Regulator
Mechanical Dimensions (Continued)
Dimensions in millimeters
D-PAK
25 www.fairchildsemi.com
KA78XXE/KA78XXAE Rev. 1.0.5
© Fairchild Semiconductor Corporation www.fairchildsemi.com
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Advance Information Formative / In Design Datasheet contains the design specifications for product development. Specifications may change
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Rev. I61