Page 1
©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 Transistor Safe Operating A r ea Protection
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 voltage s, makin g them usef ul in a
wide range of applications. Each type employs internal
current limiting, thermal shut down and safe operating area
protection , making it essen tially indestruc tible. If adequa te
heat sinking is provided, they can deliver over 1A output
current. Although de sig ne d pr i mar i ly as fi x e d volt age
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
TO-220
D-PAK
1. Input 2. GND 3. Output
1
1
Internal Block Digram
KA78XX/KA78XXA
3-Terminal 1A Positiv e Voltage Regulator
Page 2
KA78XX/KA78XXA
2
Absolute Maximum Ratings
Electrical Characteristics (KA7805/K A7805R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
o
due to heatin 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 V
O
= 5V to 18V)
(for V
O
= 24V)
V
I
V
I
35
40
V
V
Thermal Resistance Junction-Cases (TO-220) R
θJC
5
°
C/W
Thermal Resistance Junction-Air (TO-220) R
θJA
65
°
C/W
Operating Temperature Range (KA78XX/A/R) T
OPR
0 ~ +125
°
C
Storage Temperature Range T
STG
-65 ~ +150
°
C
Parameter Symbol Conditions
KA7805
Unit
Min. Typ. Max.
Output Voltage V
O
TJ =+25 oC 4.8 5.0 5.2
5.0mA ≤ Io ≤ 1.0A, P
O
≤ 15W
V
I
= 7V to 20V 4.75 5.0 5.25
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
O
= 7V to 25V - 4.0 100
mV
V
I
= 8V to 12V - 1.6 50
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5.0mA to1.5A - 9 100
mV
I
O
=250mA to 750mA - 4 50
Quiescent Current I
Q
TJ =+25 oC-5.08.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - 0.03 0.5
mA
V
I
= 7V to 25V - 0.3 1.3
Output Voltage Drift ∆V
O
/∆TIO= 5mA - -0.8 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA=+25 oC-42-µV/V
O
Ripple Rejection RR
f = 120Hz
V
O
= 8V to 18V
62 73 - dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 oC-2-V
Output Resistance r
O
f = 1KHz - 15 - mΩ
Short Circuit Current I
SC
VI = 35V, TA =+25 oC - 230 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 3
KA78XX/KA78XXA
3
Electrical Characteristics (KA7806/K A7806R)
(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 V
O
due to heating eff e cts mus t be t aken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions
KA7806
Unit
Min. Typ. Max.
Output Voltage V
O
TJ =+25 oC 5.75 6.0 6.25
5.0mA ≤ I
O
≤ 1.0A, PO≤ 15W
V
I
= 8.0V to 21V 5.7 6.0 6.3
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 8V to 25V - 5 120
mV
V
I
= 9V to 13V - 1.5 60
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
=5mA to 1.5A - 9 120
mV
I
O
=250mA to750mA - 3 60
Quiescent Current I
Q
TJ =+25 oC-5.08.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1A - - 0.5
mA
V
I
= 8V to 25V - - 1.3
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -0.8 -
mV/
o
C
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-45-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 9V to 19V
59 75 - dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 oC-2-V
Output Resistance r
O
f = 1KHz - 19 - mΩ
Short Circuit Current I
SC
VI= 35V, TA=+25 oC - 250 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 4
KA78XX/KA78XXA
4
Electrical Characteristics (KA7808/K A7808R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33µF, CO=0.1µF, unless otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating 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 V
O
TJ =+25 oC 7.7 8.0 8.3
5.0mA ≤ I
O
≤ 1.0A, PO≤ 15W
V
I
= 10.5V to 23V 7.6 8.0 8.4
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 10.5V to 25V - 5.0 160
mV
V
I
= 11.5V to 17V - 2.0 80
Load Regulation (Note1) Regload TJ =+25 oC
I
O
= 5.0mA to 1.5A - 10 160
mV
I
O
= 250mA to
750mA
-5.080
Quiescent Current I
Q
TJ =+25 oC-5.08.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - 0.05 0.5
mA
V
I
= 10.5A to 25V - 0.5 1.0
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -0.8 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-52-µV/Vo
Ripple Rejection RR f = 120Hz, V
I
= 11.5V to 21.5V 56 73 - dB
Dropout Voltage V
Drop
IO = 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 oC - 230 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 5
KA78XX/KA78XXA
5
Electrical Characteristics (KA7809/K A7809R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO=0.1µF, unless otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating eff e cts mus t be t aken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions
KA7809
Unit
Min. Typ. Max.
Output Voltage V
O
TJ =+25 oC 8.65 9 9.35
5.0mA≤ I
O
≤1.0A, PO ≤15W
V
I
= 11.5V to 24V 8.6 9 9.4
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 11.5V to 25V - 6 180
mV
V
I
= 12V to 17V - 2 90
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 12 180
mV
I
O
= 250mA to 750mA - 4 90
Quiescent Current I
Q
TJ=+25 oC-5.08.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - - 0.5
mA
V
I
= 11.5V to 26V - - 1.3
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection
RR
f = 120Hz
V
I
= 13V to 23V
56 71 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 oC - 250 - mA
Peak Current I
PK
TJ= +25 oC-2.2-A
Page 6
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 otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating 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 V
O
TJ =+25 oC 9.6 10 10.4
5.0mA ≤ I
O
≤ 1.0A, PO ≤ 15W
V
I
= 12.5V to 25V 9.5 10 10.5
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 12.5V to 25V - 10 200
mV
V
I
= 13V to 25V - 3 100
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 12 200
mV
I
O
= 250mA to 750mA - 4 400
Quiescent Current I
Q
TJ =+25 oC-5.18.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - - 0.5
mA
V
I
= 12.5V to 29V - - 1.0
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 13V to 23V
56 71 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI = 35V, TA=+25 oC - 250 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 7
KA78XX/KA78XXA
7
Electrical Characteristics (KA7812/K A7812R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating 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 V
O
TJ =+25 oC 11.5 12 12.5
5.0mA ≤ I
O
≤1.0A, PO≤15W
V
I
= 14.5V to 27V 11.4 12 12.6
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 14.5V to 30V - 10 240
mV
V
I
= 16V to 22V - 3.0 120
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 11 240
mV
I
O
= 250mA to 750mA - 5.0 120
Quiescent Current I
Q
TJ =+25 oC-5.18.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - 0.1 0.5
mA
V
I
= 14.5V to 30V - 0.5 1.0
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-76-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 15V to 25V
55 71 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 18 - mΩ
Short Circuit Current I
SC
VI = 35V, TA=+25 oC - 230 - mA
Peak Current I
PK
TJ = +25 oC-2.2-A
Page 8
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 otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating eff e cts mus t be t aken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions
KA7815
Unit
Min. Typ. Max.
Output Voltage V
O
TJ =+25 oC 14.4 15 15.6
5.0mA ≤ I
O
≤1.0A, PO≤15W
V
I
= 17.5V to 30V 14.25 15 15.75
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 17.5V to 30V - 11 300
mV
V
I
= 20V to 26V - 3 150
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 12 300
mV
I
O
= 250mA to 750mA - 4 150
Quiescent Current I
Q
TJ =+25 oC-5.28.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - - 0.5
mA
V
I
= 17.5V to 30V - - 1.0
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-90-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 18.5V to 28.5V
54 70 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 19 - mΩ
Short Circuit Current I
SC
VI = 35V, TA=+25 oC - 250 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 9
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 otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating 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 V
O
TJ =+25 oC 17.3 18 18.7
5.0mA ≤ I
O
≤1.0A, PO ≤15W
V
I
= 21V to 33V 17.1 18 18.9
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 21V to 33V - 15 360
mV
V
I
= 24V to 30V - 5 180
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 15 360
mV
I
O
= 250mA to 750mA - 5.0 180
Quiescent Current I
Q
TJ =+25 oC-5.28.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - - 0.5
mA
V
I
= 21V to 33V - - 1
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-110-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 22V to 32V
53 69 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC - 2 - V
Output Resistance r
O
f = 1KHz - 22 - mΩ
Short Circuit Current I
SC
VI = 35V, TA=+25 oC - 250 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 10
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 otherwis e specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating eff e cts mus t be t aken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions
KA7824
Unit
Min. Typ. Max.
Output Voltage V
O
TJ =+25 oC232425
5.0mA ≤ I
O
≤ 1.0A, PO ≤ 15W
V
I
= 27V to 38V 22.8 24 25.25
V
Line Regulation (Note1) Regline T
J
=+25 oC
V
I
= 27V to 38V - 17 480
mV
V
I
= 30V to 36V - 6 240
Load Regulation (Note1) Regload T
J
=+25 oC
I
O
= 5mA to 1.5A - 15 480
mV
I
O
= 250mA to 750mA - 5.0 240
Quiescent Current I
Q
TJ =+25 oC-5.28.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1.0A - 0.1 0.5
mA
V
I
= 27V to 38V - 0.5 1
Output Voltage Drift ∆V
O
/∆TIO = 5mA - -1.5 -
mV/
o
C
Output Noise Voltage V
N
f = 10Hz to 100KHz, TA =+25 oC-60-µV/Vo
Ripple Rejection RR
f = 120Hz
V
I
= 28V to 38V
50 67 - dB
Dropout Voltage V
DropIO
= 1A, TJ=+25 oC-2-V
Output Resistance r
O
f = 1KHz - 28 - mΩ
Short Circuit Current I
SC
VI = 35V, TA=+25 oC - 230 - mA
Peak Current I
PK
TJ =+25 oC-2.2-A
Page 11
KA78XX/KA78XXA
11
Electrical Chara cte ri sti cs (KA7805A)
(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 V
O
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 V
O
TJ =+25 oC4.955.1
V
I
O
= 5mA to 1A, P
O
≤ 15W
V
I
= 7.5V to 20V
4.8 5 5.2
Line Regulation (Note1)
Regline
V
I
= 7.5V to 25V
I
O
= 500mA
-550
mV
V
I
= 8V to 12V - 3 50
T
J
=+25 oC
V
I
= 7.3V to 20V - 5 50
V
I
= 8V to 12V - 1.5 25
Load Regulation (Note1)
Regload
T
J
=+25 oC
I
O
= 5mA to 1.5A
- 9 100
mV
I
O
= 5mA to 1A - 9 100
I
O
= 250mA to 750mA - 4 50
Quiescent Current I
Q
TJ =+25 oC-5.06.0mA
Quiescent Current
Change
∆I
Q
IO = 5mA to 1A - - 0.5
mAV
I
= 8 V to 25V, IO = 500mA - - 0.8
V
I
= 7.5V to 20V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆T Io = 5mA - -0.8 - mV/
o
C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 oC
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 8V to 18V
-68- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 oC-2-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 oC - 250 - mA
Peak Current I
PK
TJ= +25 oC-2.2-A
Page 12
KA78XX/KA78XXA
12
Electrical Chara cte ri sti cs (KA7806A)
(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. Load an d lin e re gul ation ar e spec ifie d at con sta nt ju nct ion t empe rat ure. Chan ge i n V
O
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 V
O
TJ =+25 oC 5.58 6 6.12
V
I
O
= 5mA to 1A, P
O
≤ 15W
V
I
= 8.6V to 21V
5.76 6 6.24
Line Regulation (Note1)
Regline
V
I
= 8.6V to 25V
I
O
= 500mA
-560
mV
V
I
= 9V to 13V - 3 60
T
J
=+25 oC
V
I
= 8.3V to 21V - 5 60
V
I
= 9V to 13V - 1.5 30
Load Regulation (Note1)
Regload
T
J
=+25 oC
I
O
= 5mA to 1.5A
- 9 100
mV
I
O
= 5mA to 1A - 4 100
I
O
= 250mA to 750mA - 5.0 50
Quiescent Current I
Q
TJ =+25 oC-4.36.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1A - - 0.5
mAV
I
= 9V to 25V, IO = 500mA - - 0.8
V
I
= 8.5V to 21V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆TI
O
= 5mA - -0.8 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 oC
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 9V to 19V
-65- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 oC-2-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 oC - 250 - mA
Peak Current I
PK
TJ=+25 oC-2.2-A
Page 13
KA78XX/KA78XXA
13
Electrical Chara cte ri sti cs (KA7808A)
(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 V
O
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 V
O
TJ =+25 oC 7.84 8 8.16
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 10.6V to 23V
7.7 8 8.3
Line Regulation (Note1)
Regline
V
I
= 10.6V to 25V
I
O
= 500mA
-680
mV
V
I
= 11V to 17V - 3 80
T
J
=+25 oC
V
I
= 10.4V to 23V - 6 80
V
I
= 11V to 17V - 2 40
Load Regulation (Note1)
Regload
T
J
=+25 oC
I
O
= 5mA to 1.5A
- 12 100
mV
I
O
= 5mA to 1A - 12 100
I
O
= 250mA to 750mA - 5 50
Quiescent Current I
Q
TJ =+25 oC-5.06.0mA
Quiescent Current Change ∆I
Q
IO = 5mA to 1A - - 0.5
mAV
I
= 11V to 25V, IO = 500mA - - 0.8
V
I
= 10.6V to 23V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆TI
O
= 5mA - -0.8 - mV/ oC
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 oC
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 11.5V to 21.5V
-62- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 oC-2-V
Output Resistance r
O
f = 1KHz - 18 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 oC - 250 - mA
Peak Current I
PK
TJ=+25 oC-2.2-A
Page 14
KA78XX/KA78XXA
14
Electrical Characteri sti cs (KA7809A)
(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. Load an d lin e re gul ation ar e spec ifie d at con sta nt ju nct ion t empe rat ure. Chan ge i n V
O
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 V
O
TJ =+25°C 8.82 9.0 9.18
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 11.2V to 24V
8.65 9.0 9.35
Line Regulation (Note1)
Regline
V
I
= 11.7V to 25V
I
O
= 500mA
-690
mV
V
I
= 12.5V to 19V - 4 45
T
J
=+25°C
V
I
= 11.5V to 24V - 6 90
V
I
= 12.5V to 19V - 2 45
Load Regulation (Note1)
Regload
T
J
=+25°C
I
O
= 5mA to 1.0A
- 12 100
mV
I
O
= 5mA to 1.0A - 12 100
I
O
= 250mA to 750mA - 5 50
Quiescent Current I
Q
TJ =+25 °C-5.06.0mA
Quiescent Current Change ∆I
Q
VI = 11.7V to 25V, TJ=+25 °C--0.8
mAV
I
= 12V to 25V, IO = 500mA - - 0.8
I
O
= 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆TI
O
= 5mA - -1.0 - mV/ °C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 °C
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 12V to 22V
-62- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 °C-2.0-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 °C - 250 - mA
Peak Current I
PK
TJ=+25°C-2.2-A
Page 15
KA78XX/KA78XXA
15
Electrical Chara cte ri sti cs (KA7810A)
(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 V
O
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 V
O
TJ =+25°C 9.8 10 10.2
V
I
O
= 5mA to 1A, P
O
≤ 15W
V
I
=12.8V to 25V
9.6 10 10.4
Line Regulation (Note1)
Regline
V
I
= 12.8V to 26V
I
O
= 500mA
- 8 100
mV
V
I
= 13V to 20V - 4 50
T
J
=+25 °C
V
I
= 12.5V to 25V - 8 100
V
I
= 13V to 20V - 3 50
Load Regulation (Note1)
Regload
T
J
=+25 °C
I
O
= 5mA to 1.5A
- 12 100
mV
I
O
= 5mA to 1.0A - 12 100
I
O
= 250mA to 750mA - 5 50
Quiescent Current I
Q
TJ =+25 °C-5.06.0mA
Quiescent Current Change ∆I
Q
VI = 13V to 26V, TJ=+25 °C--0.5
mA V
I
= 12.8V to 25V, IO = 500mA - - 0.8
I
O
= 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O
= 5mA - -1.0 - mV/ °C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 °C
-10-
µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 14V to 24V
-62- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25°C-2.0-V
Output Resistance r
O
f = 1KHz - 17 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 °C - 250 - mA
Peak Current I
PK
TJ=+25 °C-2.2-A
Page 16
KA78XX/KA78XXA
16
Electrical Chara cte ri sti cs (KA7812A)
(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 V
O
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 V
O
TJ =+25 °C 11.75 12 12.25
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 14.8V to 27V
11.5 12 12.5
Line Regulation (Note1)
Regline
V
I
= 14.8V to 30V
I
O
= 500mA
- 10 120
mV
V
I
= 16V to 22V - 4 120
T
J
=+25 °C
V
I
= 14.5V to 27V - 10 120
V
I
= 16V to 22V - 3 60
Load Regulation (Note1)
Regload
T
J
=+25 °C
I
O
= 5mA to 1.5A
- 12 100
mV
I
O
= 5mA to 1.0A - 12 100
I
O
= 250mA to 750mA - 5 50
Quiescent Current I
Q
TJ =+25°C-5.16.0mA
Quiescent Current Change ∆I
Q
VI = 15V to 30V, TJ=+25 °C- 0.8
mA V
I
= 14V to 27V, IO = 500mA - 0.8
I
O
= 5mA to 1.0A - 0.5
Output Voltage Drift ∆V/∆T I
O
= 5mA - -1.0 - mV/°C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25°C
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 14V to 24V
-60- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25°C-2.0-V
Output Resistance r
O
f = 1KHz - 18 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 °C - 250 - mA
Peak Current I
PK
TJ=+25 °C-2.2-A
Page 17
KA78XX/KA78XXA
17
Electrical Chara cte ri sti cs (KA7815A)
(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. Load an d lin e re gul ation ar e spec ifie d at con sta nt ju nct ion t empe rat ure. Chan ge i n V
O
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 V
O
TJ =+25 °C 14.7 15 15.3
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 17.7V to 30V
14.4 15 15.6
Line Regulation (Note1)
Regline
V
I
= 17.9V to 30V
I
O
= 500mA
- 10 150
mV
V
I
= 20V to 26V - 5 150
T
J
=+25°C
V
I
= 17.5V to 30V - 11 150
V
I
= 20V to 26V - 3 75
Load Regulation (Note1)
Regload
T
J
=+25 °C
I
O
= 5mA to 1.5A
- 12 100
mV
I
O
= 5mA to 1.0A - 12 100
I
O
= 250mA to 750mA - 5 50
Quiescent Current I
Q
TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆I
Q
VI = 17.5V to 30V, TJ =+25 °C--0.8
mA V
I
= 17.5V to 30V, IO = 500mA - - 0.8
I
O
= 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O
= 5mA - -1.0 - mV/°C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25 °C
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 18.5V to 28.5V
-58- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 °C-2.0-V
Output Resistance r
O
f = 1KHz - 19 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 °C - 250 - mA
Peak Current I
PK
TJ=+25°C-2.2-A
Page 18
KA78XX/KA78XXA
18
Electrical Chara cte ri sti cs (KA7818A)
(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 V
O
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 V
O
TJ =+25 °C 17.64 18 18.36
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 21V to 33V
17.3 18 18.7
Line Regulation (Note1)
Regline
V
I
= 21V to 33V
I
O
= 500mA
- 15 180
mV
V
I
= 21V to 33V - 5 180
T
J
=+25 °C
V
I
= 20.6V to 33V - 15 180
V
I
= 24V to 30V - 5 90
Load Regulation (Note1)
Regload
T
J
=+25°C
I
O
= 5mA to 1.5A
- 15 100
mV
I
O
= 5mA to 1.0A - 15 100
I
O
= 250mA to 750mA - 7 50
Quiescent Current I
Q
TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆I
Q
VI = 21V to 33V, TJ=+25 °C--0.8
mA V
I
= 21V to 33V, IO = 500mA - - 0.8
I
O
= 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O
= 5mA - -1.0 - mV/ °C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
=+25°C
-10-
µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 22V to 32V
-57- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25°C-2.0-V
Output Resistance r
O
f = 1KHz - 19 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25°C - 250 - mA
Peak Current I
PK
TJ=+25 °C-2.2-A
Page 19
KA78XX/KA78XXA
19
Electrical Chara cte ri sti cs (KA7824A)
(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. Load an d lin e re gul ation ar e spec ifie d at con sta nt ju nct ion t empe rat ure. Chan ge i n V
O
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 V
O
TJ =+25 °C 23.5 24 24.5
V
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 27.3V to 38V
23 24 25
Line Regulation (Note1)
Regline
V
I
= 27V to 38V
I
O
= 500mA
- 18 240
mV
V
I
= 21V to 33V - 6 240
T
J
=+25 °C
V
I
= 26.7V to 38V - 18 240
V
I
= 30V to 36V - 6 120
Load Regulation (Note1)
Regload
T
J
=+25 °C
I
O
= 5mA to 1.5A
- 15 100
mV
I
O
= 5mA to 1.0A - 15 100
I
O
= 250mA to 750mA - 7 50
Quiescent Current I
Q
TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆I
Q
VI = 27.3V to 38V, TJ =+25 °C--0.8
mA V
I
= 27.3V to 38V, IO = 500mA - - 0.8
I
O
= 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O
= 5mA - -1.5 - mV/ °C
Output Noise Voltage V
N
f = 10Hz to 100KHz
T
A
= 25 °C
-10-µV/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 500mA
V
I
= 28V to 38V
-54- dB
Dropout Voltage V
Drop
IO = 1A, TJ =+25 °C-2.0-V
Output Resistance r
O
f = 1KHz - 20 - mΩ
Short Circuit Current I
SC
VI= 35V, TA =+25 °C - 250 - mA
Peak Current I
PK
TJ=+25 °C-2.2-A
Page 20
KA78XX/KA78XXA
20
Typical Perfomance Characteristics
Figure 1. Quiescent Current
Figure 3. Output Voltage
Figure 2. Peak Output Current
Figure 4. Quiescent Current
I
Page 21
KA78XX/KA78XXA
21
Typical Applications
Figure 5. DC Parameters
Figure 6. Load Regulation
Figure 7. Ripple Rejection
Figure 8. Fixed Output Regulator
Input
Output
Input
Output
Input
Output
Input
Output
Page 22
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) C
I
is required if regulator is located an appreciable distance from power Supply filter.
(3) C
O
improves stability and transient response.
V
O
= VXX(1+R2/R1)+IQR
2
Figure 10. Circuit for Increasing Output Voltage
I
RI
≥5 I
Q
VO = VXX(1+R2/R1)+IQR
2
Figure 11. Adjustable Output Regulator (7 to 30V)
Input
Output
C
I
C
O
Input
Output
C
I
C
O
IRI5IQ≥
Input
Output
C
I
C
O
Page 23
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
Page 24
KA78XX/KA78XXA
24
Figure 15. Split Power Supply ( ±15V-1A)
Figure 16. Negative Output Voltage Circuit
Figure 17. Switching Regulator
Input
Output
Input
Output
Page 25
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
Page 26
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
Page 27
KA78XX/KA78XXA
27
Ordering Information
Product Number 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
Page 28
KA78XX/KA78XXA
6/1/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
LIFE SUPPORT POL I CY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. 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 sys tem whose failure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec tiveness.
www.fairchildsemi.com
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTION OR DES IGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RI GHTS OF OTHERS.
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