©2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.0
Features
Output Current up to 1A
Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
Thermal Overload Protection
Short Circuit Protection
Output Transist or Safe Operating Ar ea P r otection
Description
The KA78XX/KA78XXA series of three-terminal positive
regulator are available in the TO-220/D-PAK package and
with several fix ed outp ut volta ges, makin g them use ful 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
curre nt . Alth ough desig ne d pr ima r il y as fixed volta ge
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
TO-220
D-PAK
1. Input 2. GND 3. Outpu t
1
1
Internal Block Digram
KA78XX/KA78XXA
3-Terminal 1A Positive Voltage Regulator
KA78XX/KA78XXA
2
Absolute Maximum Ratings
Electri cal Cha r acteristi cs (KA7805/KA7805R )
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in Vo du e to he atin g effe cts mus t be tak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage (for VO = 5V to 18V)
(for VO = 24V) VI
VI35
40 V
V
Thermal Resistance Junction-Cases (TO-220) RθJC 5°C/W
Thermal Resistance Junction-Air (TO-220) RθJA 65 °C/W
Operating Temperature Range (KA78XX/A/R) TOPR 0 ~ +125 °C
Storage Temperature Range TSTG -65 ~ +150 °C
Parameter Symbol Conditions KA7805 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 4.8 5.0 5.2
5.0mA Io 1.0A, PO 15W
VI = 7V to 20V 4.75 5.0 5.25 V
Line Regulation (Note1) Regline TJ=+25 oCVO = 7V to 25V - 4.0 100 mV
VI = 8V to 12V - 1.6 50
Load Regulation (Note1) Regload TJ=+25 oCIO = 5.0mA to1.5A - 9 100 mV
IO =250mA to 750mA - 4 50
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - 0.03 0.5 mA
VI= 7V to 25V - 0.3 1.3
Output Voltage Drift VO/TI
O= 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA=+25 oC-42-µV/VO
Ripple Rejection RR f = 120Hz
VO = 8V to 18V 62 73 - dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 15 - m
Short Circuit Current ISC VI = 35V, TA =+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
3
Electri cal Cha r acteristi cs (KA7806/KA7806R )
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =11V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7806 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 5.75 6.0 6.25
5.0mA IO1.0A, PO15W
VI = 8.0V to 21V 5.7 6.0 6.3 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 8V to 25V - 5 120 mV
VI = 9V to 13V - 1.5 60
Load Regulation (Note1) Regload TJ =+25 oCIO =5mA to 1.5A - 9 120 mV
IO =250mA to750mA - 3 60
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change IQIO = 5mA to 1A - - 0.5 mA
VI = 8V to 25V - - 1.3
Output Voltage Drift VO/TI
O = 5mA - -0.8 - mV/
oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-45-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 9V to 19V 59 75 - dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 19 - m
Short Circuit Current ISC VI= 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
4
Electri cal Cha r acteristi cs (KA7808/KA7808R )
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7808 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 7.7 8.0 8.3
5.0mA IO 1.0A, PO15W
VI = 10.5V to 23V 7.6 8.0 8.4 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 10.5V to 25V - 5.0 160 mV
VI = 11.5V to 17V - 2.0 80
Load Regulation (Note1) Regload TJ =+25 oCIO = 5.0mA to 1.5A - 10 160 mV
IO= 250mA to
750mA -5.080
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - 0.05 0.5 mA
VI = 10.5A to 25V - 0.5 1.0
Output Voltage Drift VO/TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, T A =+25 oC-52-µV/Vo
Ripple Rejection RR f = 120Hz, VI= 11.5V to 21.5V 56 73 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
5
Electri cal Cha r acteristi cs (KA7809/KA7809R )
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7809 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 8.65 9 9.35
5.0mA IO 1.0A, PO 15W
VI= 11.5V to 24V 8.6 9 9.4 V
Line Regulation (Note1) Regline TJ=+25 oCVI = 11.5V to 25V - 6 180 mV
VI = 12V to 17V - 2 90
Load Regulation (Note1) Regload TJ=+25 oCIO = 5mA to 1.5A - 12 180 mV
IO = 250mA to 750mA - 4 90
Quiescent Current IQTJ=+25 oC-5.08.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - - 0.5 mA
VI = 11.5V to 26V - - 1.3
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100 KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ= +25 oC-2.2-A
KA78XX/KA78XXA
6
Electrical Characteristics (KA7810)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =16V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7810 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 9.6 10 10.4
5.0mA IO 1.0A, PO 15W
VI = 12.5V to 25V 9.5 10 10.5 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 12.5V to 25V - 10 200 mV
VI = 13V to 25V - 3 100
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 12 200 mV
IO = 250mA to 750mA - 4 400
Quiescent Current IQTJ =+25 oC-5.18.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - - 0.5 mA
VI = 12.5V to 29V - - 1.0
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100 KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
7
Electri cal Cha r acteristi cs (KA7812/KA7812R )
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7812/KA7812R Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 11.5 12 12.5
5.0mA IO1.0A, PO15W
VI = 14.5V to 27V 11.4 12 12.6 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 14.5V to 30V - 10 240 mV
VI = 16V to 22V - 3.0 120
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 11 240 mV
IO = 250mA to 750mA - 5.0 120
Quiescent Current IQTJ =+25 oC-5.18.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - 0.1 0.5 mA
VI = 14.5V to 30V - 0.5 1.0
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100 KHz, TA =+25 oC-76-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 15V to 25V 55 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 1 8 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA
Peak Current IPK TJ = +25 oC-2.2-A
KA78XX/KA78XXA
8
Electrical Characteristics (KA7815)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =23V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7815 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 14.4 15 15.6
5.0mA IO1.0A, PO15W
VI = 17.5V to 30V 14.25 15 15.75 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 17.5V to 30V - 11 300 mV
VI = 20V to 26V - 3 150
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 12 300 mV
IO = 250mA to 750mA - 4 150
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - - 0.5 mA
VI = 17.5V to 30V - - 1.0
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 1 0Hz to 100KHz, TA =+25 oC-90-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 18.5V to 28.5V 54 70 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 19 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
9
Electrical Characteristics (KA7818)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =27V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7818 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC 17.3 18 18.7
5.0mA IO 1.0A, PO 15W
VI = 21V to 33V 17.1 18 18.9 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 21V to 33V - 15 360 mV
VI = 24V to 30V - 5 180
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1. 5A - 15 360 mV
IO = 250mA to 750mA - 5.0 180
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - - 0.5 mA
VI = 21V to 33V - - 1
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100 KHz, TA =+25 oC-110-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 22V to 32V 53 69 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC - 2 - V
Output Resistance rOf = 1KHz - 2 2 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
10
Electrical Characteristics (KA7824)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =33V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7824 Unit
Min. Typ. Max.
Output Voltage VOTJ =+25 oC232425
5.0mA IO 1.0A, PO 15W
VI = 27V to 38V 22.8 24 25.25 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 27V to 38V - 17 480 mV
VI = 30V to 36V - 6 240
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 15 480 mV
IO = 250mA to 750mA - 5.0 240
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change IQIO = 5mA to 1.0A - 0.1 0.5 mA
VI = 27V to 38V - 0.5 1
Output Voltage Drift VO/TI
O = 5mA - -1.5 - mV/
oC
Output Noise Voltage VNf = 10Hz t o 100KHz, TA =+25 oC-60-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 28V to 38V 50 67 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 28 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
11
Electri cal Cha racteristi cs (KA7 805A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 10V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. 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.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ =+25 oC4.955.1
V
IO = 5mA to 1A, PO 15W
VI = 7.5V to 20V 4.8 5 5.2
Line Regulation (Note1) Regline
VI = 7.5V to 25V
IO = 500mA -550
mV
VI = 8V to 12V - 3 50
TJ =+25 oCVI= 7.3V to 20V - 5 50
VI= 8V to 12V - 1.5 25
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 9 100 mV
IO = 5mA to 1A - 9 100
IO = 250mA to 750mA - 4 50
Quiescent Current IQTJ =+25 oC-5.06.0mA
Quiescent Current
Change IQ
IO = 5mA to 1A - - 0.5 mAVI = 8 V to 25V, IO = 500mA - - 0.8
VI = 7.5V to 20V, TJ =+25 oC--0.8
Output Voltage Drift V/T Io = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 8V to 18V -68- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ= +25 oC-2.2-A
KA78XX/KA78XXA
12
Electri cal Cha racteristi cs (KA7 806A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 11V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ =+25 oC 5.58 6 6.12 V
IO = 5mA to 1A, PO 15W
VI = 8.6V to 21V 5.76 6 6.24
Line Regulation (Note1) Regline
VI= 8.6V to 25V
IO = 500mA -560
mV
VI= 9V to 13V - 3 60
TJ =+25 oCVI= 8.3V to 21V - 5 60
VI= 9V to 13V - 1.5 30
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 9 100 mV
IO = 5mA to 1A - 4 100
IO = 250mA to 750mA - 5.0 50
Quiescent Current IQTJ =+25 oC-4.36.0mA
Quiescent Current Change IQ
IO = 5mA to 1A - - 0.5 mAVI = 9V to 25V, IO = 500mA - - 0.8
VI= 8.5V to 21V, TJ =+25 oC--0.8
Output Voltage Drift V/TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/V o
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 9V to 19V -65- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ=+25 oC-2.2-A
KA78XX/KA78XXA
13
Electri cal Cha racteristi cs (KA7 808A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 14V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. 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.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ =+25 oC 7.84 8 8.16 V
IO = 5mA to 1A, PO 15W
VI = 10.6V to 23V 7.7 8 8.3
Line Regulation (Note1) Regline
VI= 10.6V to 25V
IO = 500mA -680
mV
VI= 11V to 17V - 3 80
TJ =+25 oCVI= 10.4V to 23V - 6 80
VI= 11V to 17V - 2 40
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 12 100 mV
IO = 5mA to 1A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQTJ =+25 oC-5.06.0mA
Quiescent Current Change IQ
IO = 5mA to 1A - - 0.5 mAVI = 11V to 25V, IO = 500mA - - 0.8
VI= 10.6V to 23V, TJ =+25 oC--0.8
Output Voltage Drift V/TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 11.5V to 21.5V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 18 - m
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ=+25 oC-2.2-A
KA78XX/KA78XXA
14
Electrical Char a cte ri sti cs (KA7 809A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 15V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ =+25°C 8.82 9.0 9.18 V
IO = 5mA to 1A, PO15W
VI = 11.2V to 24V 8.65 9.0 9.35
Line Regulation (Note1) Regline
VI= 11.7V to 25V
IO = 500mA -690
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
Load Regulation (Note1) Regload
TJ =+25°C
IO = 5mA to 1.0A - 12 100 mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQTJ =+25 °C-5.06.0mA
Quiescent Current Change IQ
VI = 11.7V to 25V, TJ=+25 °C--0.8
mAVI = 12V to 25V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift V/TI
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 12V to 22V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rOf = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25°C-2.2-A
KA78XX/KA78XXA
15
Electri cal Cha racteristi cs (KA7 810A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 16V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. 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.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO TJ =+25°C 9.8 10 10.2 V
IO = 5mA to 1A, PO 15W
VI =12.8V to 25V 9.6 10 10.4
Line Regulation (Note1) Regline
VI= 12.8V to 26V
IO = 500mA - 8 100
mV
VI= 13V to 20V - 4 50
TJ =+25 °C VI= 12.5V to 25V - 8 100
VI= 13V to 20V - 3 50
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100 mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25 °C-5.06.0mA
Quiescent Current Change IQ
VI = 13V to 26V, TJ=+25 °C--0.5
mA VI = 12.8V to 25V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift V/T I
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25 °C-10-
µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 17 - m
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
16
Electri cal Cha racteristi cs (KA7 812A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 19V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. 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.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO 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
Line Regulation (Note1) Regline
VI= 14.8V to 30V
IO = 500mA - 10 120
mV
VI= 16V to 22V - 4 120
TJ =+25 °C VI= 14.5V to 27V - 10 120
VI= 16V to 22V - 3 60
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100 mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25°C-5.16.0mA
Quiescent Current Change IQ
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
Output Voltage Drift V/T I
O = 5mA - -1.0 - mV/°C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25°C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -60- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 18 - m
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
17
Electri cal Cha racteristi cs (KA7 815A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I =23V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO 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
Line Regulation (Note1) Regline
VI= 17.9V to 30V
IO = 500mA - 10 150
mV
VI= 20V to 26V - 5 150
TJ =+25°C VI= 17.5V to 30V - 11 150
VI= 20V to 26V - 3 75
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100 mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change IQ
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
Output Voltage Drift V/T I
O = 5mA - -1.0 - mV/°C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V -58- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rO f = 1KHz - 19 - m
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25°C-2.2-A
KA78XX/KA78XXA
18
Electri cal Cha racteristi cs (KA7 818A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 27V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. 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.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO TJ =+25 °C 17.64 18 18.36 V
IO = 5mA to 1A, PO 15W
VI = 21V to 33V 17.3 18 18.7
Line Regulation (Note1) Regline
VI= 21V to 33V
IO = 500mA - 15 180
mV
VI= 21V to 33V - 5 180
TJ =+25 °C VI= 20.6V to 33V - 15 180
VI= 24V to 30V - 5 90
Load Regulation (Note1) Regload
TJ =+25°C
IO = 5mA to 1.5A - 15 100 mV
IO = 5mA to 1.0A - 15 100
IO = 250mA to 750mA - 7 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change IQ
VI = 21V to 33V, TJ=+25 °C--0.8
mA VI = 21V to 33V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift V/T I
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25°C-10-
µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 22V to 32V -57- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 19 - m
Short Circuit Current ISC VI= 35V, TA =+25°C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
19
Electri cal Cha racteristi cs (KA7 824A )
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 33V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO TJ =+25 °C 23.5 24 24.5 V
IO = 5mA to 1A, PO 15W
VI = 27.3V to 38V 23 24 25
Line Regulation (Note1) Regline
VI= 27V to 38V
IO = 500mA - 18 240
mV
VI= 21V to 33V - 6 240
TJ =+25 °C VI= 26.7V to 38V - 18 240
VI= 30V to 36V - 6 120
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 15 100 mV
IO = 5mA to 1.0A - 15 100
IO = 250mA to 750mA - 7 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change IQ
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
Output Voltage Drift V/T I
O = 5mA - -1.5 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA = 25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 28V to 38V -54- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rO f = 1KHz - 20 - m
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
20
Typical Perfomance Characteristics
Figure 1. Quiescent Current
Figu re 3. Ou tpu t Vo lta ge
Figure 2. Peak Output Current
Figu re 4. Quiescent Cu rre nt
I
KA78XX/KA78XXA
21
Typical Applications
Figure 5. DC Parameters
Figure 6. Load Regul ation
Figure 7. Ripple Rejection
Figure 8. Fixed Output Regulator
Input Output
Input Output
Input Output
Input Output
KA78XX/KA78XXA
22
Figure 9. 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.
VO = VXX(1+R2/R1)+IQR2
Figure 10. Circuit for Increasing Output Voltage
IRI 5 IQ
VO = VXX(1+R2/R1)+IQR2
Fig u re 11. Adju stable O utp ut Regula tor (7 to 30V)
Input Output
CI
CO
Input Output
CICO
IRI 5IQ
Input Output
CI
CO
KA78XX/KA78XXA
23
Figure 12. High Current Voltage Regulator
Figure 13. High Output Current with Short Circuit Protection
Figure 14. Tracking Voltage Regulator
Input
Output
Input
Output
KA78XX/KA78XXA
24
Figure 15. Split Power Supply ( ±15V-1A)
Figu re 16. N ega tiv e Ou tpu t Vo lta ge Circuit
Figure 17. Switching Regulat or
Input
Output
Input Output
KA78XX/KA78XXA
25
Mechanical Dimensions
Package
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 ±0.1015.90 ±0.20
10.08 ±0.30 18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20 ±0.2013.08 ±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
KA78XX/KA78XXA
26
Mechancal Dimensions (Continued)
Package
6.60 ±0.20
2.30 ±0.10
0.50 ±0.10
5.34 ±0.30
0.70 ±0.20
0.60 ±0.20
0.80 ±0.20
9.50 ±0.30
6.10 ±0.20
2.70 ±0.20 9.50 ±0.30
6.10 ±0.20
2.70 ±0.20
MIN0.55
0.76 ±0.10 0.50 ±0.10
1.02 ±0.20
2.30 ±0.20
6.60 ±0.20
0.76 ±0.10
(5.34)
(1.50)
(2XR0.25)
(5.04)
0.89 ±0.10
(0.10) (3.05)
(1.00)
(0.90)
(0.70)
0.91 ±0.10
2.30TYP
[2.30±0.20]
2.30TYP
[2.30±0.20]
MAX0.96
(4.34)(0.50) (0.50)
D-PAK
KA78XX/KA78XXA
27
Ordering Information
Product Numb er Output Voltage Tolerance Package Operating Temperature
KA7805 / KA7806
±4%
TO-220
0 ~ + 125°C
KA7808 / KA7809
KA7810
KA7812 / KA7815
KA7818 / KA7824
KA7805A / KA7806A
±2%
KA7808A / KA7809A
KA7810A / KA7812A
KA7815A / KA7818A
KA7824A
KA7805R / KA7806R
±4% D-PAKKA7808R / KA7809R
KA7812R
KA78XX/KA78XXA
6/1/01 0.0m 001
Stock#DSxxxxxxxx
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instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
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reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
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