©2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. 5.0
Features
Output Current up to 1A
Output Voltages of 5, 6, 8, 9, 10, 11, 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-ter minal positive
regulator are available in the TO-220/D-PAK package and
with several fixed output voltages, making them useful in a
wide range of applications. Each type employs internal cur-
rent limiting, thermal shut-down and safe operating area pro-
tection, making it essentially indestructible. If adequate heat
sinking is provided, they can deliver over 1A output current.
Although designed primarily as fixed voltag e 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)
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.
Parameter Symbol Value Unit
Input Voltage (for VO = 5V to 18V)
(for VO = 24V) VI
VI35
40 V
V
Thermal Resistance Junction-Cases RθJC 5°C/W
Thermal Resistance Junction-Air 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 VO
TJ =+25 oC4.85.05.2
5.0mA Io 1.0A, P O 15W
VI = 7V to 20V
VI = 8V to 20V 4.75 5.0 5.25 V
Line Regulation VOTJ=+25 oCVO = 7V to 25V - 4.0 100 mV
VI = 8V to 12V - 1.6 50
Load Regulation VOTJ=+25 oCIO = 5.0mA to1.5A - 9 100 mV
IO =250mA to 750mA - 4 50
Quiescent Current IQTJ =+25 oC-5.08mA
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
Ripple Rejection RR f = 120Hz
VO = 8V to 18V 62 73 - dB
Dropout Voltage VOIO = 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)
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.
Parameter Symbol Conditions KA7806 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 5.75 6.0 6.25
5.0mA IO1.0A, PD15W
VI = 8.0V to 21V
VI = 9.0V to 21V 5.7 6.0 6.3 V
Line Regulation VOTJ =+25 oCVI = 8V to 25V - 5 120 mV
VI = 9V to 13V - 1.5 60
Load Regulation VOTJ =+25 oCIO =5mA to 1.5A - 9 120 mV
IO =250mA to750A - 3 60
Quiescent Current IQTJ =+25 oC-5.08mA
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
Ripple Rejection RR f = 120Hz
VI = 9V to 19V 59 75 - dB
Dropout Voltage VOIO = 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)
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.
Parameter Symbol Conditions KA7808 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 7.7 8.0 8.3
5.0mA IO 1.0A, PO15W
VI = 10.5V to 23V
VI = 11.5V to 23V 7.6 8.0 8.4 V
Line Regulation VOTJ =+25 oCVI = 10.5V to 25V - 5.0 160 mV
VI = 11.5V to 17V - 2.0 80
Load Regulation VOTJ =+25 oCIO = 5.0mA to 1.5A - 10 160 mV
IO= 250mA to
750mA -5.080
Quiescent Current IQTJ =+25 oC-5.08mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - 0.05 0.5
VI = 10.5A to 25V - 0.5 1.0 mA
VI = 11.5V to 25V - -
Output Voltage Drift VO/TI
O = 5mA - -0.8 - mV/
oC
Output Noise Voltage VNf = 10Hz to 100KHz, T A =+25 oC-52-µV
Ripple Rejection RR f = 120Hz, VI= 11.5V to 21.5 56 73 - dB
Dropout Voltage VOIO = 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)
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.
Parameter Symbol Conditions KA7809 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 8.65 9 9.35
5.0mA IO 1.0A, PD 15W
VI= 11.5V to 24V
VI = 12.5V to 24V 8.6 9 9.4 V
Line Regulation VOTJ=+25 oCVI = 11.5V to 25V - 6 180 mV
VI = 12V to 25v - 2 90
Load Regulation VOTJ=+25 oCIO = 5mA to 1.5A - 12 180 mV
IO = 250mA to 750mA - 4 90
Quiescent Current IQTJ=+25 oC-5.08mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - - 0.5
VI = 11.5V to 26V - - 1.3 mA
VI = 12.5V to 26V - - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz , TA =+25 oC-58-µV
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VOIO = 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
Electri cal Cha r acteristi cs (KA7810/KA7810R )
(Refer to test circuit ,0°C < TJ < +125°C, IO = 500mA , VI = 16V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
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.
Parameter Symbol Conditions KA7810 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 9.6 10 10.4
5.0mA IO1.0A, PD 15W
VI = 12.5V to 25V
VI= 13.5V to 25V 9.5 10 10.5 V
Line Regulation VOTJ =+25 oCVI = 12.5V to 25V - 10 200 mV
VI = 13V to 25V - 3 100
Load Regulation VOTJ =+25 oCIO = 5mA to 1.5A - 12 200 mV
IO = 250mA to 750mA - 4 400
Quiescent Current IQTJ =+25 oC-5.18mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - - 0.5
VI = 12.5V to 29V - - 1.0 mA
VI = 13.5V to 29V - - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz , TA =+25 oC-58-µV
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VOIO = 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 (KA7811/KA7811R)
(Refer to test circuit ,0°C < TJ < +125°C, IO = 500mA , VI = 18V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
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.
Parameter Symbol Conditions KA7811 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 10.6 11 11.4
5.0mA IO 1.0A, PD 15W
VI = 13.5V to 26V
VI= 14.5V to 26V 10.5 11 11.5 V
Line Regulation VOTJ =+25 oCVI = 13.5V to 25V - 10 220 mV
VI = 14V to 21V - 3 110
Load Regulation VOTJ =+25 oCIO = 5.0mA to 1.5A - 12 220 mV
IO = 250mA to 750mA - 4 110
Quiescent Current IQTJ =+25 oC-5.18mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - - 0.5
VI = 13.5V to 29V - - 1.0 mA
VI = 14.5V to 29V - - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz , TA =+25 oC-70-µV
Ripple Rejection RR f = 120Hz
VI = 14V to 24V 55 71 - dB
Dropout Voltage VOIO = 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
8
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)
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.
Parameter Symbol Conditions KA7812 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 11.5 12 12.5
5.0mA IO1.0A, PD15W
VI = 14.5V to 27V
VI= 15.5V to 27V 11.4 12 12.6 V
Line Regulation VOTJ =+25 oCVI = 14.5V to 30V - 10 240 mV
VI = 16V to 22V - 3.0 120
Load Regulation VOTJ =+25 oCIO = 5mA to 1.5A - 11 240 mV
IO = 250mA to 750mA - 5.0 120
Quiescent Current IQTJ =+25 oC-5.18mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - 0.1 0.5
VI = 14.5V to 30V - 0.5 1.0 mA
VI = 15V to 30V - - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100 KHz, TA =+25 oC-76-µV
Ripple Rejection RR f = 120Hz
VI = 15V to 25V 55 71 - dB
Dropout Voltage VOIO = 1A, TJ=+25 oC-2-V
Output Resistance ROf = 1KHz - 18 - m
Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA
Peak Current IPK TJ = +25 oC-2.2-A
KA78XX/KA78XXA
9
Electri cal Cha r acteristi cs (KA7815/KA7815R )
(Refer to test circuit ,0°C < TJ < +125°C, IO = 500mA , VI = 23V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
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.
Parameter Symbol Conditions KA7815 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 14.4 15 15.6
5.0mA IO1.0A, PD15W
VI = 17.5V to 30V
VI= 18.5V to 30V 14.25 15 15.75 V
Line Regulation VOTJ =+25 oCVI = 17.5V to 30V - 1 1 300 mV
VI = 20V to 26V - 3 150
Load Regulation VOTJ =+25 oCIO = 5mA to 1.5A - 12 300 mV
IO = 250mA to 750mA - 4 150
Quiescent Current IQTJ =+25 oC-5.28mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - - 0.5
VI = 17.5V to 30V - - 1.0 mA
VI = 18.5V to 30V - - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 1 0Hz to 100KHz, TA =+25 oC-90-µV
Ripple Rejection RR f = 120Hz
VI = 18.5V to 28.5V 54 70 - dB
Dropout Voltage VOIO = 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
10
Electri cal Cha r acteristi cs (KA7818/KA7818R )
(Refer to test circuit ,0°C < TJ < +125°C, IO = 500mA , VI = 27V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
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.
Parameter Symbol Conditions KA7818 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 17.3 18 18.7
5.0mA IO 1.0A, PD 15W
VI = 21V to 33V
VI= 22V to 33V 17.1 18 18.9 V
Line Regulation VOTJ =+25 oCVI = 21V to 33V - 15 360 mV
VI = 24V to 30V - 5 180
Load Regulation VOTJ =+25 oCIO = 5mA to 1.5A - 15 360 mV
IO = 250mA to 750mA - 5.0 180
Quiescent Current IQTJ =+25 oC-5.28mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - - 0.5
VI = 21V to 33V - - 1 mA
VI = 22V to 33V - -
Output Voltage Drift VO/TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz , TA =+25 oC-110-µV
Ripple Rejection RR f = 120Hz
VI = 22V to 32V 53 69 - dB
Dropout Voltage VOIO = 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
11
Electri cal Cha r acteristi cs (KA7824/KA7824R )
(Refer to test circuit ,0°C < TJ < +125°C, IO = 500mA , VI = 33V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
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.
Parameter Symbol Conditions KA7824 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC232425
5.0mA IO 1.0A, PD 15W
VI = 27V to 38V
VI= 28V to 38V 22.8 24 25.25 V
Line Regulation VOTJ =+25 oCVI = 27V to 38V - 17 480 mV
VI = 30V to 36V - 6 240
Load Regulation VOTJ =+25 oCIO = 5mA to 1.5A - 15 480 mV
IO = 250mA to 750mA - 5.0 240
Quiescent Current IQTJ =+25 oC-5.28mA
Quiescent Current Change IQ
IO = 5mA to 1.0A - 0.1 0.5
VI = 27V to 38V - 0.5 1 mA
VI = 28V to 38V - - -
Output Voltage Drift VO/TI
O = 5mA - -1.5 - mV/
oC
Output Noise Voltage VNf = 10Hz t o 100KHz, TA =+25 oC-60-µV
Ripple Rejection RR f = 120Hz
VI = 28V to 38V 50 67 - dB
Dropout Voltage VOIO = 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
12
Electri cal Cha racteristi cs (KA7 805A )
(Refer to the test circuits. TJ = 0 to +I25 oC, Io = 1A, V I = 10V, C I= 0.33µF, C O= 0.1µF, unless otherwise specified)
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, PD 5W
VI = 7.5V to 20V 4.8 5 5.2
*Line Regulation VO
VI = 7.5V to 25V
IO = 500mA -550
mV
VI = 8V to 12V - 3 50
TJ =+25 oCVI= 7.3V to 25V - 5 50
VI= 8V to 12V - 1.5 25
*Load Regulation 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-5.06mA
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 8V to 18V -68- dB
Dropout Voltage VDIO = 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 806A )
(Refer to the test circuits. TJ = 0 to+150 oC, Io = 1A, V I = 11V, C I= 0.33µF, C O= 0.1µF, unless otherwise specified)
Load and line regulation are specified at constant, junction temperature. Change in VO due to he a ti ng ef f e c ts must be ta ken
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, PD 15W
VI = 8.6V to 21V 5.76 6 6.24
*Line Regulation VO
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 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-4.36mA
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 9V to 19V -65- dB
Dropout Voltage VDIO = 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
14
Electri cal Cha racteristi cs (KA7 808A )
(Refer to the test circuits. TJ = 0°C to+150 oC, Io = 1A, V I = 14V, C I= 0.33µF, C O= 0.1µF, u nless otherwise specified)
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, PD 15W
VI = 8.6V to 21V 7.7 8 8.3
*Line Regulation VO
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 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-5.06mA
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 11.5V to 21.5V -62- dB
Dropout Voltage VDIO = 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
15
Electrical Char a cte ri sti cs (KA7 809A)
(Refer to the test circuits. TJ = 0°C to +125°C, Io = 1A, V I = 15V, C I = 0.33µF, C O = 0.1µF, unless otherwise specified)
Load and line regulation are specified at constant, junction temperature. Change in VO due to he at i ng ef f e c ts must be ta ken
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, PD15W
VI = 11.2V to 24V 8.65 9.0 9.35
*Line Regulation VO
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 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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 12V to 22V -62- dB
Dropout Voltage VDIO = 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
16
Electri cal Cha racteristi cs (KA7 810A )
(Refer to the test circuits. TJ = 0 to +125 °C, Io = 1A, V I = 16V, C I = 0.33µF, C O = 0.1µF, unless otherwise specified)
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, PD 15W
VI =12.8V to 25V 9.6 10 10.4
*Line Regulation VO
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 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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -62- dB
Dropout Voltage VD 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
17
Electri cal Cha racteristi cs (KA7 811A)
(Refer to the test circuits. TJ = 0 to +125°C, Io = 1A, V I = 18V, C I = 0.33µF, C O = 0.1µF, unless otherwise specified)
Load and line regulation are specified at constant, junction temperature. Change in VO due to he at i ng ef f e c ts must be ta ken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO TJ =+25 °C 10.8 11.0 11.2 V
IO = 5mA to 1A, PD 15W
VI = 13.8V to 26V 10.6 11.0 11.4
*Line Regulation VO
VI= 12.8V to 26V
IO = 500mA -10110
mV
VI= 15V to 21V - 4 55
TJ =+25 °C VI= 13.5V to 26V - 10 110
VI= 15V to 21V - 3 55
*Load Regulation 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 = 13.8V to 26V, 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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -61- dB
Dropout Voltage VD 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
18
Electri cal Cha racteristi cs (KA7 812A )
(Refer to the test circuits. TJ = 0 to +125 °C, Io = 1A, V I = 19V, C I = 0.33µF, C O = 0.1µF, unless otherwise specified)
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, PD 15W
VI = 14.8V to 27V 11.5 12 12.5
*Line Regulation VO
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 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- 0.5
mA VI = 14V to 27V, IO = 500mA - 0.8
IO = 5mA to 1.0A - 0.8
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -60- dB
Dropout Voltage VD 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
19
Electri cal Cha racteristi cs (KA7 815A )
(Refer to the test circuits. TJ = 0 to +150°C, Io =1A , V I=23V, C I = 0.33µF, C O=0.1µF, unless otherwise specified)
Load and line regulation are specified at constant, junction temperature. Change in VO due to he at i ng ef f e c ts must be ta ken
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, PD 15W
VI = 17.7V to 30V 14.4 15 15.6
*Line Regulation VO
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 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--0.5
mA VI = 17.5V to 30V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.8
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V -58- dB
Dropout Voltage VD 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
20
Electri cal Cha racteristi cs (KA7 818A )
(Refer to the test circuits. TJ = 0 to +150°C, Io =1A , V I=27V, C I = 0.33µF, C O=0.1µF, unless otherwise specified)
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, PD 15W
VI = 21V to 33V 17.3 18 18.7
*Line Regulation VO
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 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--0.5
mA VI = 21V to 33V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.8
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V -57- dB
Dropout Voltage VD 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
21
Electri cal Cha racteristi cs (KA7 824A )
(Refer to the test circuits. TJ = 0 to +150 °C, Io =1A, V I=33V, C I = 0.33µF, C O=0.1µF, unless otherwise specified)
Load and line regulation are specified at constant, junction temperature. Change in VO due to he at i ng ef f e c ts must be ta ken
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, PD 15W
VI = 27.3V to 38V 23 24 25
*Line Regulation VO
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 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--0.5
mA VI = 27.3V to 38V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.8
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
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V -54- dB
Dropout Voltage VD 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
22
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
KA78XX/KA78XXA
23
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
24
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
Input Output
IRI 5IQ
Input Output
KA78XX/KA78XXA
25
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
26
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
27
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
28
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
29
Ordering Information
Product Numb er Output Voltage Tolerance Package O perating Temperature
KA7805 / KA7806
±4%
TO-220
0 ~ + 125°C
KA7808 / KA7809
KA7810 / KA7811
KA7812 / KA7815
KA7818 / KA7824
KA7805A / KA7806A
±2%
KA7808A / KA7809A
KA7810A / KA7811A
KA7812A / KA7815A
KA7818A / KA7824A
KA7805R / KA7806R
±4% D-PAK
KA7808R / KA7809R
KA7810R / KA7811R
KA7812R / KA7815R
KA7818R / KA7824R
KA78XX/KA78XXA
7/13/00 0.0m 001
Stock#DSxxxxxxxx
2000 Fairch il d Semiconduc tor International
LIFE SU PP ORT POL ICY
FAIRCHILD’S PRODUCTS AR E NOT AUTHORIZED FOR USE AS C RITICAL COMPONENTS I N LIFE S UPPORT DEVICE S
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
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
device or syst em who se failure to perform can be
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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