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KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9
April 2015
KA78XXE / KA78XXAE
3-Terminal 1 A Positive Voltage Regulator
Features
Output Current up to 1 A
Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24 V
Thermal Overload Protection
Short-Circuit Protection
Output Transistor Safe Operating Area Protection
Block Diagram
Figure 1. Block Diagram
SERIES
PASS
ELEMENT
SOA
PROTECTION
ERROR
AMPLIFIER
THERMAL
PROTECTION
CURRENT
GENERATOR
REFERENCE
VOLTAGE
STARTING
CIRCUIT
OUTPUT
3
GND
2
INPUT
1
Description
The KA78XXE / KA78XXAE series of three-terminal posi-
tive regulators is available in the TO-220 / D-PAK pack-
age with several fixed-output voltages, making them
useful in a wi de ra nge of appl icati ons. Each type employs
internal current limiting, thermal shut-down, and safe
operating area. If adequate heat sinking is provided, they
can deliver over 1 A output current. Although designed
primarily as fixed-voltage regulators, these devices can
be used with e xternal c omponent s fo r adjust abl e volt ages
and currents.
1
1. Input
2. GND
3. Output
1
GND
TO-220 D-PAK
GND
(Dual Gauge)
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 2
Ordering Information
Notes:
1. Above output voltage tolerance is available at 25°C.
2. Refer to below figure for TM / TF Suffix for DPAK.
Product Number Output Voltage
Tolerance(1) Package Operating
Temperature Parking Method
KA7805ETU
±4%
TO-220 (Dual Gauge)
-40°C to +125°C
Rail
KA7806ETU
KA7808ETU
KA7809ETU
KA7810ETU
KA7812ETU
KA7815ETU
KA7818ETU
KA7824ETU
KA7805ERTF
D-PAK(2) Tape and Reel
KA7805ERTM
KA7808ERTM
KA7809ERTM
KA7812ERTM
KA7805AETU
±2% TO-220 (Dual Gauge) 0°C to +125°C Rail
KA7809AETU
KA7810AETU
KA7812AETU
KA7815AETU
KA7824AETU
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 3
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the re co mmen ded operating conditions and s tres si ng the parts to these level s i s not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless ot herwise noted.
Symbol Parameter Value Unit
VIInput Voltage VO = 5 V to 18 V 35 V
VO = 24 V 40 V
RθJC Thermal Resistance Junction-Case (TO-220) 5 °C/W
RθJA Thermal Resistance Junction-Air (TO-220) 65 °C/W
TOPR Operating Temperature Range KA78XXE / KA78XXER -40 to +125 °C
KA78XXAE 0 to +125
TSTG Storage Temperature Range -65 to +150 °C
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 4
Electrical Characteristics (KA7805E / KA7805ER)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI =10 V, CI= 0.33 μF, CO=0.1 μF, unless otherwise specified.
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.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 4.80 5.00 5.20 V
5.0 mA IO1.0 A, PO 15 W,
VI = 7 V to 20 V 4.75 5.00 5.25
Regline Line Regulation(3) TJ = +25°CVI = 7 V to 25 V 4.0 100.0 mV
VI = 8 V to 12 V 1.6 50.0
Regload Load Regulation(3) TJ = +25°CIO = 5.0 mA to 1.5 A 9 100 mV
IO = 250 mA to 750 mA 4 50
IQQuiescent Current TJ = +25°C58mA
ΔIQQuiescent Current Change IO = 5 mA to 1.0 A 0.03 0.50 mA
VI = 7 V to 25 V 0.30 1.30
ΔVO/ΔT Output Voltage Drift(4) IO = 5 mA -0.8 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C42μV
RR Ripple Rejection(4) f = 120 Hz, VI = 8 V to 18 V 62 73 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(4) f = 1 kHz 15 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C230mA
IPK Peak Current(4) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 5
Electrical Characteristics (KA7806E)
Refer to test circuit, -40°C < TJ < 125 °C, IO = 500 mA, VI = 11 V, CI = 0.33 μF, CO = 0.1 μF, 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 5.75 6.00 6.25 V
5.0 mA IO1.0 A, PO15 W,
VI = 8.0 V to 21 V 5.70 6.00 6.30
Regline Line Regulation(5) TJ = +25°CVI = 8 V to 25 V 5.0 120.0 mV
VI = 9 V to 13 V 1.5 60.0
Regload Load Regulation(5) TJ = +25°CIO = 5 mA to 1.5 A 9 120 mV
IO = 250 mA to 750 mA 3 60
IQQuiescent Current TJ = +25°C58mA
ΔIQQuiescent Current
Change IO = 5 mA to 1 A 0.5 mA
VI = 8 V to 25 V 1.3
ΔVO/ΔT Output Voltage Drift(6) IO = 5 mA -0.8 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C45μV
RR Ripple Rejection(6) f = 120 Hz, VI = 9 V to 19 V 59 75 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(6) f = 1 kHz 19 mΩ
ISC Short-Circuit Current VI = 35 V, TA= +25°C 250 mA
IPK Peak Current(6) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 6
Electrical Characteristics (KA7808E / KA7808ER)
Refer to test circuit, -40°C < TJ < 1 25 °C, IO = 500 mA, VI = 14 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise speci fie d.
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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 7.7 8.0 8.3 V
5.0 mA IO 1.0 A, PO15 W,
VI = 10.5 V to 23 V 7.6 8.0 8.4
Regline Line Regulation(7) TJ = +25°CVI = 10.5 V to 25 V 5 160 mV
VI = 11.5 V to 17 V 2 80
Regload Load Regulation(7) TJ = +25°CIO = 5.0 mA to 1.5 A 10 160 mV
IO = 250 mA to 750 mA 5 80
IQQuiescent Current TJ = +25°C58mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.05 0.50 mA
VI = 10.5 A to 25 V 0.50 1.00
ΔVO/ΔT Output Voltage Drift(8) IO = 5 mA -0.8 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C52μV
RR Ripple Rejection(8) f = 120 Hz, VI= 11.5 V to 21.5 V 56 73 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(8) f = 1 kHz 17 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C230mA
IPK Peak Current(8) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 7
Electrical Characteristics (KA7809E / KA7809ER)
Refer to test ci rcu it, -40 °C < T J < 125 °C, IO = 500 mA, VI = 15 V, CI = 0. 33 μF, CO = 0.1 μF, 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 8.65 9.00 9.35 V
5.0 mA IO 1.0 A, PO 15 W,
VI = 11.5 V to 24 V 8.60 9.00 9.40
Regline Line Regulation(9) TJ = +25°CVI = 11.5 V to 25 V 6 180 mV
VI = 12 V to 17 V 2 90
Regload Load Regulation(9) TJ = +25°CIO = 5 mA to 1.5 A 12 180 mV
IO = 250 mA to 750 mA 4 90
IQQuiescent Current TJ = +25°C58mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.5 mA
VI = 11.5 V to 26 V 1.3
ΔVO/ΔT Output Voltage Drift(10) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV
RR Ripple Rejection(10) f = 120 Hz, VI = 13 V to 23 V 56 71 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(10) f = 1 kHz 17 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(10) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 8
Electrical Characteristics (KA7810E)
Refer to test ci rcu it, -40 °C < T J < 125 °C, IO = 500 mA, VI = 16 V, CI = 0. 33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
11. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 9.6 10.0 10.4 V
5.0 mA IO 1.0 A, PO 15 W,
VI = 12.5 V to 25 V 9.5 10.0 10.5
Regline Line Regulation(11) TJ = +25°CVI = 1 2.5 V to 25 V 10 200 mV
VI = 13 V to 25 V 3 100
Regload Load Regulation(11) TJ = +25°CIO = 5 mA to 1.5 A 12 200 mV
IO = 250 mA to 750 mA 4 400
IQQuiescent Current TJ = +25°C5.18.0mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.5 mA
VI = 12.5 V to 29 V 1.0
ΔVO/ΔT Output Voltage Drift(12) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV
RR Ripple Rejection(12) f = 120 Hz, VI = 13 V to 23 V 56 71 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(12) f = 1 kHz 17 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(12) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 9
Electrical Characteristics (KA7812E / KA7812ER)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 19 V, CI = 0.33 μF, CO= 0.1 μF, unless otherwise specified.
Notes:
13. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 11.5 12.0 12.5 V
5.0 mA IO 1.0 A, PO15 W,
VI = 14.5 V to 27 V 11.4 12.0 12.6
Regline Line Regulation(13) TJ = +25°CVI = 14.5 V to 30 V 10 240 mV
VI = 16 V to 22 V 3 120
Regload Load Regulation(13) TJ = +25°CIO = 5 mA to 1 .5 A 11 240 mV
IO = 250 mA to 750 mA 5 120
IQQuiescent Current TJ = +25°C5.18.0mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.1 0.5 mA
VI = 14.5 V to 30 V 0.5 1.0
ΔVO/ΔT Output Voltage Drift(14) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C76μV
RR Ripple Rejection(14) f = 120 Hz, VI = 15 V to 25 V 55 71 dB
VDrop Dropout Voltage IO = 1 A, TJ= +25°C2V
ROOutput Resistance(14) f = 1 kHz 18 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25 °C 230 mA
IPK Peak Current(14) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 10
Electrical Characteristics (KA7815E)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 23 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise speci fied.
Notes:
15. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 14.40 15.00 15.60 V
5.0 mA IO 1.0 A, PO 15 W,
VI = 17.5 V to 30 V 14.25 15.00 15.75
Regline Line Regulation(15) TJ = +25°CVI = 17.5 V to 30 V 1 1 300 mV
VI = 20 V to 26 V 3 150
Regload Load Regulation (15) TJ = +25°CIO = 5 mA to 1.5 A 12 300 mV
IO = 250 mA to 750 mA 4 150
IQQuiescent Current TJ = +25°C5.28.0mA
ΔIQQuiescent Current Change IO = 5 mA to 1.0 A 0.5 mA
VI = 17.5 V to 30 V 1.0
ΔVO/ΔT Output Voltage Drift(16) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 1 0 H z t o 1 0 0 k H z , T A = +25°C90μV
RR Ripple Rejection(16) f = 120 Hz, VI = 18.5 V to 28.5 V 54 70 d B
VDrop Dropout Voltage IO = 1 A, TJ= +25°C2V
ROOutput Resistance(16) f = 1 kHz 19 mΩ
ISC Short-Circuit Current VI = 35 V, TA= +25°C250mA
IPK Peak Current(16) TJ =+25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 11
Electrical Characteristics (KA7818E)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 27 V, CI = 0.33 μF, CO = 0.1 μF, unless o therwise specified.
Notes:
17. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges 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 Min. Typ. Max. Unit
VOOutput Voltage TJ =+25°C 17.3 18.0 18.7 V
5.0 mA IO 1.0 A, PO 15 W,
VI = 21 V to 33 V 17.1 18.0 18.9
Regline Li ne Regulation(17) TJ = +25°CVI = 21 V to 33 V 15 360 mV
VI = 24 V to 30 V 5 180
Regload Load Regulation(17) TJ = +25°CIO = 5 mA to 1.5 A 15 360 mV
IO = 250 mA to 750 mA 5 180
IQQuiescent Current TJ =+25°C5.28.0mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.5 mA
VI = 21 V to 33 V 1.0
ΔVO/ΔT Output Voltage Drift(18) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C110μV
RR Ripple Rejection(18) f = 120 Hz, VI = 22 V to 32 V 53 69 dB
VDrop Dropout Voltage IO = 1 A, TJ= +25°C 2 V
ROOutput Resistance(18) f = 1 kHz 22 mΩ
ISC Short-Circ uit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(18) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 12
Electrical Characteristics (KA7824E)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 33 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise speci fied.
Notes:
19. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 23.00 24.00 25.00 V
5.0 mA IO 1.0 A, PO 15 W,
VI = 27 V to 38 V 22.80 24.00 25.25
Regline Line Regulation(19) TJ = +25°CVI = 27 V to 38 V 17 480 mV
VI = 30 V to 36 V 6 240
Regload Load Regulation(19) TJ = +25°CIO = 5 mA to 1.5 A 15 480 mV
IO = 250 mA to 750 mA 5 240
IQQuiescent Current TJ = +25°C5.28.0mA
ΔIQQuiescent Current
Change IO = 5 mA to 1.0 A 0.1 0.5 mA
VI = 27 V to 38 V 0.5 1.0
ΔVO/ΔT Output Voltage Drift(20) IO = 5mA -1.5 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C120μV
RR Ripple Rejection(20) f = 120 Hz, VI = 28 V to 38 V 50 67 dB
VDrop Dropout Voltage IO = 1 A, TJ= +25°C2V
ROOutput Resistance(20) f = 1 kHz 28 mΩ
ISC Short-Circui t Current VI = 35 V, TA= +25°C230mA
IPK Peak Current(20) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 13
Electrical Characteristics (KA7805AE)
Refer to the test circuit, 0°C < TJ < +125°C, Io = 1 A, VI = 10 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
21. Load and li ne 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.
22. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ =+25°C4.95.05.1
V
IO = 5 mA to 1 A, PO 15 W,
VI = 7.5 V to 20 V 4.8 5.0 5.2
Regline Line Regulation (21)
VI = 7.5 V to 25 V, IO = 500 mA 5.0 50.0
mV
VI = 8 V to 12 V 3.0 50.0
TJ = +25°CVI= 7.3 V to 20 V 5.0 50.0
VI= 8 V to 12 V 1.5 25.0
Regload Load Regulation(21) TJ =+25°C, IO = 5 mA to 1.5 A 9 100 mVIO = 5 mA to 1 A 9 100
IO = 250 mA to 750 mA 4 50
IQQuiescent Current TJ = +25°C56mA
ΔIQQuiescent Current Change IO = 5 mA to 1 A 0.5 mAVI = 8 V to 25 V, IO = 500 mA 0.8
VI = 7.5 V to 20 V, TJ = +25°C0.8
ΔV/ΔT Outp ut Voltage Drif t(22) IO = 5 mA -0.8 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C42μV
RR Ripple Rejection(22) f = 120 Hz, IO = 500 mA,
VI = 8 V to 18 V 68 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(22) f = 1 kHz 1 7 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(22) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 14
Electrical Characteristics (KA7809AE)
Refer to the test circuit, 0°C < TJ < +125 °C, IO = 1 A, VI = 15 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
23. Load and li ne 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.
24. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 8.829.009.18 V
IO = 5 mA to 1 A, PO 15 W,
VI = 11.2 V to 24 V 8.65 9.00 9.35
Regline Line Regulation (23)
VI = 11.7 V to 25 V, IO = 500 mA 6 90
mV
VI = 12.5 V to 19 V 4 45
TJ = +25°C VI = 11.5 V to 24 V 6 90
VI = 12.5 V to 19 V 2 45
Regload Load Regulation(23) TJ = +25°C, IO = 5 mA to 1.0 A 12 100 mVIO = 5 mA to 1.0 A 12 100
IO = 250 mA to 750 mA 5 50
IQQuiescent Current TJ = +25°C56mA
ΔIQQuiescent Current Change VI = 11.7 V to 25 V, TJ = +25°C0.8
mAVI = 12 V to 25 V, IO = 500 mA 0.8
IO = 5 mA to 1.0 A 0.5
ΔV/ΔT Outp ut Voltage Drif t(24) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58 μV
RR Ripple Rejection(24) f = 120 Hz, IO = 500 mA,
VI = 12 V to 22 V 62 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(24) f = 1 kHz 17 mΩ
ISC Short-Circuit Current VI= 35 V, TA = +25°C250mA
IPK Peak Current(24) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 15
Electrical Characteristics (KA7810AE)
Refer to the test circuit, 0°C < TJ < +125 °C, IO = 1 A, VI = 16 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
25. Load and li ne 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 Min. Typ. Max. Unit
VOOutput Voltage TJ =+25°C 9.8 10.0 10.2 V
IO = 5 mA to 1 A, PO 15 W,
VI = 12.8 V to 25 V 9.6 10.0 10.4
Regline Line Regulation (25)
VI = 12.8 V to 26 V, IO = 500 mA 8 100
mV
VI = 13 V to 20 V 4 50
TJ = +25°C VI = 12.5 V to 25 V 8 100
VI = 13 V to 20 V 3 50
Regload Load Regulation(25) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1 mA 12 100
IO = 250 mA to 750 mA 5 50
IQQuiescent Current TJ = +25°C56mA
ΔIQQuiescent Current Change IO = 5 mA to 1.0 A 0.5 mAVI = 12.8 V to 25 V, IO = 500 mA 0.8
VI = 13 V to 26 V, TJ = +25°C0.5
ΔV/ΔT Outp ut Voltage Drif t(26) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58 μV
RR Ripple Rejection(26) f = 120 Hz, IO = 500 mA,
VI = 14 V to 24 V 62 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(26) f = 1 kHz 17 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(26) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 16
Electrical Characteristics (KA7812AE)
Refer to the test circuit, 0°C < TJ < +125°C, IO = 1 A, VI = 19 V, CI= 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
27. Load and li ne 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.
28. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 11.75 12.00 12.25 V
IO = 5 mA to 1 A, PO 15 W,
VI = 14.8 V to 27 V 11.50 12.00 12.50
Regline Line Regulation(27)
VI = 14.8 V to 30 V, IO = 500 mA 10 120
mV
VI= 16 V to 22 V 4 120
TJ = +25°CVI= 14.5 V to 27 V 10 120
VI= 16 V to 22 V 3 60
Regload Load Regulation(27) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1.0 A 12 100
IO = 250 mA to 750 mA 5 50
IQQuiescent Current TJ = +25°C5.16.0mA
ΔIQQuiescent Current Change VI = 15 V to 30 V, TJ = +25°C0.8
mAVI = 14 V to 27 V, IO = 500 mA 0.8
IO = 5 mA to 1.0 A 0.5
ΔV/ΔT Outp ut Voltage Drif t(28) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C76 μV
RR Ripple Rejection(28) f = 120 Hz, IO = 500 mA,
VI = 14 V to 24 V 60 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(28) f = 1 kHz 18 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(28) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 17
Electrical Characteristics (KA7815AE)
Refer to the test circuit, 0°C < TJ < +125°C, IO = 1 A, VI = 23 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
29. Load and li ne 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 Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 14.7 15.0 15.3 V
IO = 5 mA to 1 A, PO 15 W,
VI = 17.7 V to 30 V 14.4 15.0 15.6
Regline Line Regulation (29)
VI = 17.9 V to 30 V, IO = 500 mA 10 150
mV
VI = 20 V to 26 V 5 150
TJ = +25°CVI = 17.5 V to 30 V 11 150
VI = 20 V to 26 V 3 75
Regload Load Regulation(29) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1.0 A 12 100
IO = 250 mA to 750 mA 5 50
IQQuiescent Current TJ = +25°C5.26.0mA
ΔIQQuiescent Current Change VI = 17.5 V to 30 V, TJ = +25°C0.8
mAVI = 17.5 V to 30 V, IO = 500 mA 0.8
IO = 5 mA to 1.0 A 0.5
ΔV/ΔT Outp ut Voltage Drif t(30) IO = 5 mA -1 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C90 μV
RR Ripple Rejection(30) f = 120 Hz, IO = 500 mA,
VI = 18.5 V to 28.5 V 58 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(30) f = 1 kHz 19 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C250mA
IPK Peak Current(30) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 18
Electrical Characteristics (KA7824AE)
Refer to the test circuit, 0°C < TJ < +125°C, IO =1 A, VI = 33 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
31. Load and li ne 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.
32. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 23.5 24.0 24.5 V
IO = 5 mA to 1 A, PO 15 W,
VI = 27.3 V to 38 V 23.0 24.0 25.0
Regline Line Regulation (31)
VI = 27 V to 38 V, IO = 500 mA 18 240
mV
VI = 21 V to 33 V 6 240
TJ = +25°CVI = 26.7 V to 38 V 18 240
VI = 30 V to 36 V 6 120
Regload Load Regulation(31) TJ = +25°C, IO = 5 mA to 1.5 A 15 100 mVIO = 5 mA to 1.0 A 15 100
IO = 250 mA to 750 mA 7 50
IQQuiescent Current TJ = +25°C5.26.0mA
ΔIQQuiescent Current Change VI = 27.3 V to 38 V, TJ = +25°C0.8
mAVI = 27.3 V to 38 V, IO = 500 mA 0.8
IO = 5 mA to 1.0 A 0.5
ΔV/ΔT Outp ut Voltage Drif t(32) IO = 5 mA -1.5 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 120 μV
RR Ripple Rejection(32) f = 120 Hz, IO = 500 mA,
VI = 28 V to 38 V 54 dB
VDrop Dropout Voltage IO = 1 A, TJ = +25°C2V
ROOutput Resistance(32) f = 1 kHz 20 mΩ
ISC Short-Circuit Current VI = 35 V, TA = +25°C 250 mA
IPK Peak Current(32) TJ = +25°C2.2A
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 19
Typical Performance Characteristics
Figure 2. Quiescent Current Figure 3. Peak Output Current
Figure 4. Output Voltage F igure 5. Quiescent Current
6
5.75
5.5
5.25
5
4.75
4.5
VI = 10V
VO = 5V
IO = 5mA
-25-50 0 25 50 75 100 125
QUIESCENT CURRENT (mA)
JUNCTION TEMPERATURE (°C)
0
3
2.5
2
1.5
1
.5
0
TJ = 25°C
ΔVO = 100mV
5 101520253035
OUTPUT CURRENT (A)
INPUT-OUTPUT DIFFERENTIAL (V)
1.02
1.01
1
0.99
0.98
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)
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 20
Typical Applications
Figure 6. DC Parameters
Figure 7. Load Regulation
Figure 8. Ripple Rejection
0.1 μF
CO
CI0.33 μF
Output
Input KA78XXE
13
2
KA78XXE 3
2
1
0.33 μF
270 pF
100 Ω30 μS
RL
2N6121
OR EQ
Output
Input
VOOV
VO
KA78XXE Output
Input
5.1 Ω
0.33 μF2
31
RL
470 μF
120 Hz +
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 21
Typical Applications (Continued)
Figure 9. Fixed Output Regulator
Figure 10. Constant Current Regulator
Notes:
33. To specify an out put volt age, substitute volta ge value for “XX”. A common ground is requ ired between the input and
the output voltage. The input voltage must remain typically 2.0 V above the output voltage even during the low
point on the input ripple voltage.
34. CI is required if regulator is located an appreciable distance from power supply filter.
35. CO improves stability and transient response.
VO = VXX(1+R2/R1) + IQR2
Figure 11. Circuit for Increasing Output Voltage
0.1μF
CO
CI0.33μF
Output
Input KA78XXE
13
2
0.1 μF
CO
CI0.33 μF
Output
Input KA78XXE
13
2Vxx
R1
RL
IQIO
IO = R1 +IQ
Vxx
0.1 μF
CO
CI0.33 μF
Output
Input KA78XXE
13
2Vxx R1
R2
IQ
IRI 5IQ
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 22
Typical Applications (Continued)
IRI 5 IQ
VO = VXX(1+R2/R1) + IQR2
Figure 12. Adjustable Output Regulator (7 V to 30 V)
Figure 13. High-Current Voltage Regulator
Figure 14. 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
3
2
1KA78XXE Output
Input
R1
3 Ω
0.33 μF
IREG
0.1 μF
Io Vo
IQ1
VI
IO = IREG + BQ1 (IREG-VBEQ1/R1)
KA78XXE Output
Vo
0.1 μF
0.33 μF
R1
3 Ω
3
2
1
Q1
Input
VIQ2
Q1 = TIP42
Q2 = TIP42
RSC = ISC
VBEQ2
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 23
Typical Applications (Continued)
Figure 15. Tracking Voltage Regulator
Figure 16. Sp lit-Power Supply (±15 V - 1 A)
KA78XXE
KA741
0.1 μF
0.33 μF
1
2
3
72
6
434.7 kΩ
4.7 kΩ
TIP42
COMMON
COMMON
VO
-VO
VI
-VIN
_
+
3
1
2
1
3
2
0.33 μF0.1 μF
2.2 μF1 μF+
+
1N4001
1N4001
+15 V
-15 V
+20 V
-20 V
KA7815E
KA7915E
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 24
Typical Applications (Continued)
Figure 17. Negative Output Voltage Circuit
Figure 18. Switching Regulator
KA78XXE
Output
Input
+
1
20.1 μF
KA78XXE
1mH
3
1
2
2000 μF
Output
Input D45H11
0.33 μF
470 Ω
4.7 Ω
10 μF
0.5 Ω
Z1
+
+
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 25
Physical Dimensions
Figure 19. TO-220, MOLDED, 3-LEAD, NO N-JEDEC, VARIATION AB (DUAL GUAGE)
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 26
Physical Dimensions (Continued)
Figure 20. 3-LEAD, TO-252, NOT COMPLIANT TO JEDEC TO-252 VAR. AB, SURFACE MOUNT (DPAK)
© Fairchild Semiconductor Corporation www.fairchildsemi.com
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