Datasheet KA7824A, KA7824, KA7818A, KA7818, KA7815A Datasheet (Fairchild Semiconductor)

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KA78XX/KA78XXA

3-Terminal 1A Positive Voltage Regulator

Features

• Output Current up to 1A

• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V

• Thermal Overload Protection

• Short Circuit Protection

• Output Transistor Safe Operating Area 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 signed primarily as fixed vol ta ge
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.

TO-220

1

D-PAK

1

1. Input 2. GND 3. Output

Internal Block Digram

©2001 Fairchild Semiconductor Corporation

Rev. 1.0.0

KA78XX/KA78XXA

Absolute Maximum Ratings

Parameter Symbol Value Unit

Input Voltage (for V
(for V

= 24V)

O

= 5V to 18V)

O

Thermal Resistance Junction-Cases (TO-220) R
Thermal Resistance Junction-Air (TO-220) R
Operating Temperature Range (KA78XX/A/R) T
Storage Temperature Range T

V

I

V

I

θJC
θJA

OPR
STG

35
40

5

65

0 ~ +125

-65 ~ +150

°

C/W

°

C/W

°
°

V
V

C
C

Electrical Characteristics (KA7805/KA7805R)

(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

Q

/∆TIO= 5mA - -0.8 - mV/ oC

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

Drop

O
SC
PK

KA7805

Min. Typ. Max.

Unit

TJ =+25 oC 4.8 5.0 5.2

5.0mA ≤ Io ≤ 1.0A, P
= 7V to 20V 4.75 5.0 5.25

V

I

=+25 oC

J

=+25 oC

J

V
V
I
I

≤ 15W

O

= 7V to 25V - 4.0 100

O

= 8V to 12V - 1.6 50

I

= 5.0mA to1.5A - 9 100

O

=250mA to 750mA - 4 50

O

V

mV

mV

TJ =+25 oC-5.08.0mA
IO = 5mA to 1.0A - 0.03 0.5

= 7V to 25V - 0.3 1.3

V

I

f = 10Hz to 100KHz, TA=+25 oC-42-µV/V
f = 120Hz

V

= 8V to 18V

O

62 73 - dB

mA

O

IO = 1A, TJ =+25 oC-2-V
f = 1KHz - 15 - mΩ
VI = 35V, TA =+25 oC - 230 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

2

due to heatin g effe cts mus t be tak en

o

KA78XX/KA78XXA

Electrical Characteristics (KA7806/KA7806R)

(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =11V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I

Output Voltage Drift ∆V
Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -0.8 -

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

Drop

O
SC
PK

KA7806

Min. Typ. Max.

Unit

TJ =+25 oC 5.75 6.0 6.25

5.0mA ≤ I
= 8.0V to 21V 5.7 6.0 6.3

V

I

=+25 oC

J

=+25 oC

J

≤ 1.0A, PO≤ 15W

O

= 8V to 25V - 5 120

V

I

= 9V to 13V - 1.5 60

V

I

I

=5mA to 1.5A - 9 120

O

=250mA to750mA - 3 60

I

O

V

mV

mV

TJ =+25 oC-5.08.0mA
IO = 5mA to 1A - - 0.5

= 8V to 25V - - 1.3

V

I

mA

mV/

o

C
f = 10Hz to 100KHz, TA =+25 oC-45-µV/Vo
f = 120Hz

V

= 9V to 19V

I

59 75 - dB

IO = 1A, TJ =+25 oC-2-V
f = 1KHz - 19 - mΩ
VI= 35V, TA=+25 oC - 250 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating eff e cts mus t be t aken

O

3

KA78XX/KA78XXA

Electrical Characteristics (KA7808/KA7808R)

(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Parameter Symbol Conditions

TJ =+25 oC 7.7 8.0 8.3

Output Voltage V

Line Regulation (Note1) Regline T

O

5.0mA ≤ I
= 10.5V to 23V 7.6 8.0 8.4

V

I

=+25 oC

J

O

Load Regulation (Note1) Regload TJ =+25 oC

Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

O

N

TJ =+25 oC-5.08.0mA
IO = 5mA to 1.0A - 0.05 0.5

Q

= 10.5A to 25V - 0.5 1.0

V

I

/∆TIO = 5mA - -0.8 - mV/ oC

f = 10Hz to 100KHz, TA =+25 oC-52-µV/Vo
Ripple Rejection RR f = 120Hz, V
Dropout Voltage V
Output Resistance r
Short Circuit Current I
Peak Current I

Drop

O
SC
PK

IO = 1A, TJ=+25 oC-2-V
f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 oC - 230 - mA
TJ =+25 oC-2.2-A

KA7808

Min. Typ. Max.

Unit

≤ 1.0A, PO≤ 15W

= 10.5V to 25V - 5.0 160

V

I

= 11.5V to 17V - 2.0 80

V

I

= 5.0mA to 1.5A - 10 160

I

O

I

= 250mA to

O

750mA

-5.080

mV

mV

mA

= 11.5V to 21.5V 56 73 - dB

I

V

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating e ffe cts mus t be t ak en

O

4

KA78XX/KA78XXA

Electrical Characteristics (KA7809/KA7809R)

(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V
Ripple Rejection

Dropout Voltage V
Output Resistance r
Short Circuit Current I
Peak Current I

Q

Q

/∆TIO = 5mA - -1 - mV/ oC

O

N

RR

DropIO

O
SC
PK

KA7809

Min. Typ. Max.

Unit

TJ =+25 oC 8.65 9 9.35

5.0mA≤ I
= 11.5V to 24V 8.6 9 9.4

V

I

=+25 oC

J

=+25 oC

J

≤1.0A, PO ≤15W

O

= 11.5V to 25V - 6 180

V

I

= 12V to 17V - 2 90

V

I

I

= 5mA to 1.5A - 12 180

O

= 250mA to 750mA - 4 90

I

O

V

mV

mV

TJ=+25 oC-5.08.0mA
IO = 5mA to 1.0A - - 0.5

= 11.5V to 26V - - 1.3

V

I

mA

f = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
f = 120Hz

V

= 13V to 23V

I

56 71 - dB

= 1A, TJ=+25 oC-2-V

f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 oC - 250 - mA
TJ= +25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating eff e cts mus t be t aken

O

5

KA78XX/KA78XXA

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)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -1 - mV/ oC

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

DropIO

O
SC
PK

KA7810

Min. Typ. Max.

Unit

TJ =+25 oC 9.6 10 10.4

5.0mA ≤ I
= 12.5V to 25V 9.5 10 10.5

V

I

=+25 oC

J

=+25 oC

J

≤ 1.0A, PO ≤ 15W

O

= 12.5V to 25V - 10 200

V

I

= 13V to 25V - 3 100

V

I

I

= 5mA to 1.5A - 12 200

O

= 250mA to 750mA - 4 400

I

O

V

mV

mV

TJ =+25 oC-5.18.0mA
IO = 5mA to 1.0A - - 0.5

= 12.5V to 29V - - 1.0

V

I

mA

f = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
f = 120Hz

V

= 13V to 23V

I

56 71 - dB

= 1A, TJ=+25 oC-2-V

f = 1KHz - 17 - mΩ
VI = 35V, TA=+25 oC - 250 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating e ffe cts mus t be t ak en

O

6

KA78XX/KA78XXA

Electrical Characteristics (KA7812/KA7812R)

(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -1 - mV/ oC

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

DropIO

O
SC
PK

KA7812/KA7812R
Min. Typ. Max.

Unit

TJ =+25 oC 11.5 12 12.5

5.0mA ≤ I
= 14.5V to 27V 11.4 12 12.6

V

I

=+25 oC

J

=+25 oC

J

≤1.0A, PO≤15W

O

= 14.5V to 30V - 10 240

V

I

= 16V to 22V - 3.0 120

V

I

I

= 5mA to 1.5A - 11 240

O

= 250mA to 750mA - 5.0 120

I

O

V

mV

mV

TJ =+25 oC-5.18.0mA
IO = 5mA to 1.0A - 0.1 0.5

= 14.5V to 30V - 0 .5 1.0

V

I

mA

f = 10Hz to 100KHz, TA =+25 oC-76-µV/Vo
f = 120Hz

V

= 15V to 25V

I

55 71 - dB

= 1A, TJ=+25 oC-2-V

f = 1KHz - 18 - mΩ
VI = 35V, TA=+25 oC - 230 - mA
TJ = +25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating e ffe cts mus t be t ak en

O

7

KA78XX/KA78XXA

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)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -1 - mV/ oC

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

DropIO

O
SC
PK

KA7815

Min. Typ. Max.

Unit

TJ =+25 oC 14.4 15 15.6

5.0mA ≤ I
= 17.5V to 30V 14.25 15 15.75

V

I

=+25 oC

J

=+25 oC

J

≤1.0A, PO≤15W

O

= 17.5V to 30V - 11 300

V

I

= 20V to 26V - 3 150

V

I

I

= 5mA to 1.5A - 12 300

O

= 250mA to 750mA - 4 150

I

O

V

mV

mV

TJ =+25 oC-5.28.0mA
IO = 5mA to 1.0A - - 0.5

= 17.5V to 30V - - 1.0

V

I

mA

f = 10Hz to 100KHz, TA =+25 oC-90-µV/Vo
f = 120Hz

V

= 18.5V to 28.5V

I

54 70 - dB

= 1A, TJ=+25 oC-2-V

f = 1KHz - 19 - mΩ
VI = 35V, TA=+25 oC - 250 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating eff e cts mus t be t aken

O

8

KA78XX/KA78XXA

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)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I
Output Voltage Drift ∆V

Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -1 - mV/ oC

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

DropIO

O
SC
PK

KA7818

Min. Typ. Max.

Unit

TJ =+25 oC 17.3 18 18.7

5.0mA ≤ I
= 21V to 33V 17.1 18 18.9

V

I

=+25 oC

J

=+25 oC

J

≤1.0A, PO ≤15W

O

= 21V to 33V - 15 360

V

I

= 24V to 30V - 5 180

V

I

I

= 5mA to 1.5A - 15 360

O

= 250mA to 750mA - 5.0 180

I

O

V

mV

mV

TJ =+25 oC-5.28.0mA
IO = 5mA to 1.0A - - 0.5

= 21V to 33V - - 1

V

I

mA

f = 10Hz to 100KHz, TA =+25 oC-110-µV/Vo
f = 120Hz

V

= 22V to 32V

I

53 69 - dB

= 1A, TJ=+25 oC - 2 - V

f = 1KHz - 22 - mΩ
VI = 35V, TA=+25 oC - 250 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating e ffe cts mus t be t ak en

O

9

KA78XX/KA78XXA

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)

Parameter Symbol Conditions

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T
Quiescent Current I
Quiescent Current Change ∆I

Output Voltage Drift ∆V
Output Noise Voltage V

Q

Q

/∆TIO = 5mA - -1.5 -

O

N

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

DropIO

O
SC
PK

KA7824

Min. Typ. Max.

Unit

TJ =+25 oC232425

5.0mA ≤ I
= 27V to 38V 22.8 24 25.25

V

I

=+25 oC

J

=+25 oC

J

≤ 1.0A, PO ≤ 15W

O

= 27V to 38V - 17 480

V

I

= 30V to 36V - 6 240

V

I

I

= 5mA to 1.5A - 15 480

O

= 250mA to 750mA - 5.0 240

I

O

V

mV

mV

TJ =+25 oC-5.28.0mA
IO = 5mA to 1.0A - 0.1 0.5

= 27V to 38V - 0.5 1

V

I

mA

mV/

o

C
f = 10Hz to 100KHz, TA =+25 oC-60-µV/Vo
f = 120Hz

V

= 28V to 38V

I

50 67 - dB

= 1A, TJ=+25 oC-2-V
f = 1KHz - 28 - mΩ
VI = 35V, TA=+25 oC - 230 - mA
TJ =+25 oC-2.2-A

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V
into account separately. Pulse testing with low duty is used.

due to heating eff e cts mus t be t aken

O

10

KA78XX/KA78XXA

Electrical Chara cte ristics (KA7805A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 oC4.955.1

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

O

Regline

Regload

Q

= 5mA to 1A, P

I

O

= 7.5V to 20V

V

I

= 7.5V to 25V

V

I

I

= 500mA

O

= 8V to 12V - 3 50

V

I

=+25 oC

T

J

T

=+25 oC

J

I

= 5mA to 1.5A

O

= 5mA to 1A - 9 100

I

O

= 250mA to 750mA - 4 50

I

O

TJ =+25 oC-5.06.0mA
IO = 5mA to 1A - - 0.5

Quiescent Current
Change

∆I

Q

= 8 V to 25V, IO = 500mA - - 0.8

I

V

= 7.5V to 20V, TJ =+25 oC--0.8

I

Output Voltage Drift ∆V/∆T Io = 5mA - -0.8 - mV/
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

Drop

O
SC
PK

N

f = 10Hz to 100KHz
T

=+25 oC

A

f = 120Hz, I
V

= 8V to 18V

I

IO = 1A, TJ =+25 oC-2-V
f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 oC - 250 - mA
TJ= +25 oC-2.2-A

= 10V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤ 15W

O

4.8 5 5.2

-550

V

= 7.3V to 20V - 5 50

I

= 8V to 12V - 1.5 25

V

I

- 9 100

-10-µV/Vo

= 500mA

O

-68- dB

V

mV

mV

mAV

o

C

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V
into account separately. Pulse testing with low duty is used.

11

due to heating effects must be taken

O

Electrical Chara cte ristics (KA7806A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 oC 5.58 6 6.12

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆TI
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 8.6V to 21V

V

I

= 8.6V to 25V

V

I

I

= 500mA

O

= 9V to 13V - 3 60

V

I

=+25 oC

T

J

T

=+25 oC

J

I

= 5mA to 1.5A

O

= 5mA to 1A - 4 100

I

O

= 250mA to 750mA - 5.0 50

I

O

TJ =+25 oC-4.36.0mA
IO = 5mA to 1A - - 0.5

= 9V to 25V, IO = 500mA - - 0.8

I

V

= 8.5V to 21V, TJ =+25 oC--0.8

I

= 5mA - -0.8 - mV/ oC

O

f = 10Hz to 100KHz
T

=+25 oC

A

f = 120Hz, I
V

= 9V to 19V

I

IO = 1A, TJ =+25 oC-2-V
f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 oC - 250 - mA
TJ=+25 oC-2.2-A

KA78XX/KA78XXA

= 11V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤ 15W

O

5.76 6 6.24

-560

V

= 8.3V to 21V - 5 60

I

= 9V to 13V - 1.5 30

V

I

- 9 100

-10-µV/V o

= 500mA

O

-65- dB

V

mV

mV

mAV

Note:

1. Load an d lin e re gul ation ar e sp ecifi ed at con sta nt ju nct ion t empe rat ure . Chan ge i n V
into account separately. Pulse testing with low duty is used.

due to heating effects must be taken

O

12

KA78XX/KA78XXA

Electrical Chara cte ristics (KA7808A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 oC 7.84 8 8.16

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆TI
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 10.6V to 23V

V

I

= 10.6V to 25V

V

I

I

= 500mA

O

= 11V to 17V - 3 80

V

I

=+25 oC

T

J

T

=+25 oC

J

I

= 5mA to 1.5A

O

= 5mA to 1A - 12 100

I

O

= 250mA to 750mA - 5 50

I

O

TJ =+25 oC-5.06.0mA
IO = 5mA to 1A - - 0.5

= 11V to 25V, IO = 500mA - - 0.8

I

V

= 10.6V to 23V, TJ =+25 oC--0.8

I

= 5mA - -0.8 - mV/ oC

O

f = 10Hz to 100KHz
T

=+25 oC

A

f = 120Hz, I
V

= 11.5V to 21.5V

I

IO = 1A, TJ =+25 oC-2-V
f = 1KHz - 18 - mΩ
VI= 35V, TA =+25 oC - 250 - mA
TJ=+25 oC-2.2-A

= 14V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

7.7 8 8.3

-680

V

= 10.4V to 23V - 6 80

I

= 11V to 17V - 2 40

V

I

- 12 100

-10-µV/Vo

= 500mA

O

-62- dB

V

mV

mV

mAV

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V
into account separately. Pulse testing with low duty is used.

13

due to heating effects must be taken

O

Electrical Characteri sti cs (KA7809A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25°C 8.82 9.0 9.18

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆TI
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 11.2V to 24V

V

I

= 11.7V to 25V

V

I

I

= 500mA

O

= 12.5V to 19V - 4 45

V

I

=+25°C

T

J

T

=+25°C

J

I

= 5mA to 1.0A

O

= 5mA to 1.0A - 12 100

I

O

= 250mA to 750mA - 5 50

I

O

TJ =+25 °C-5.06.0mA
VI = 11.7V to 25V, TJ=+25 °C--0.8

= 12V to 25V, IO = 500mA - - 0.8

I

I

= 5mA to 1.0A - - 0.5

O

= 5mA - -1.0 - mV/ °C

O

f = 10Hz to 100KHz
T

=+25 °C

A

f = 120Hz, I
V

= 12V to 22V

I

IO = 1A, TJ =+25 °C-2.0-V
f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 °C - 250 - mA
TJ=+25°C-2.2-A

KA78XX/KA78XXA

= 15V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

8.65 9.0 9.35

-690

V

= 11.5V to 24V - 6 90

I

= 12.5V to 19V - 2 45

V

I

- 12 100

-10-µV/Vo

= 500mA

O

-62- dB

V

mV

mV

mAV

Note:

1. Load an d lin e re gul ation ar e sp ecifi ed at con sta nt ju nct ion t empe rat ure . Chan ge i n V
into account separately. Pulse testing with low duty is used.

due to heating effects must be taken

O

14

KA78XX/KA78XXA

Electrical Chara cte ristics (KA7810A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25°C 9.8 10 10.2

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆T I
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

=12.8V to 25V

V

I

= 12.8V to 26V

V

I

I

= 500mA

O

= 13V to 20V - 4 50

V

I

=+25 °C

T

J

T

=+25 °C

J

I

= 5mA to 1.5A

O

= 5mA to 1.0A - 12 100

I

O

= 250mA to 750mA - 5 50

I

O

TJ =+25 °C-5.06.0mA
VI = 13V to 26V, TJ=+25 °C--0.5

= 12.8V to 25V, IO = 500mA - - 0.8

I

I

= 5mA to 1.0A - - 0.5

O

= 5mA - -1.0 - mV/ °C

O

f = 10Hz to 100KHz
T

=+25 °C

A

f = 120Hz, I
V

= 14V to 24V

I

IO = 1A, TJ =+25°C-2.0-V
f = 1KHz - 17 - mΩ
VI= 35V, TA =+25 °C - 250 - mA
TJ=+25 °C-2.2-A

= 16V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤ 15W

O

9.6 10 10.4

- 8 100

V

= 12.5V to 25V - 8 100

I

= 13V to 20V - 3 50

V

I

- 12 100

µV/Vo

= 500mA

O

-10-

-62- dB

V

mV

mV

mA V

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V
into account separately. Pulse testing with low duty is used.

15

due to heating effects must be taken

O

KA78XX/KA78XXA

Electrical Chara cte ristics (KA7812A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 °C 11.75 12 12.25

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆T I
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 14.8V to 27V

V

I

= 14.8V to 30V

V

I

I

= 500mA

O

= 16V to 22V - 4 120

V

I

=+25 °C

T

J

T

=+25 °C

J

I

= 5mA to 1.5A

O

= 5mA to 1.0A - 12 100

I

O

= 250mA to 750mA - 5 50

I

O

TJ =+25°C-5.16.0mA
VI = 15V to 30V, TJ=+25 °C- 0.8

= 14V to 27V, IO = 500mA - 0.8

I

I

= 5mA to 1.0A - 0.5

O

= 5mA - -1.0 - mV/°C

O

f = 10Hz to 100KHz
T

=+25°C

A

f = 120Hz, I
V

= 14V to 24V

I

IO = 1A, TJ =+25°C-2.0-V
f = 1KHz - 18 - mΩ
VI= 35V, TA =+25 °C - 250 - mA
TJ=+25 °C-2.2-A

= 19V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

11.5 12 12.5

- 10 120

V

= 14.5V to 27V - 10 120

I

= 16V to 22V - 3 60

V

I

- 12 100

-10-µV/Vo

= 500mA

O

-60- dB

V

mV

mV

mA V

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V
into account separately. Pulse testing with low duty is used.

16

due to heating effects must be taken

O

Electrical Chara cte ristics (KA7815A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 °C 14.7 15 15.3

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆T I
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 17.7V to 30V

V

I

= 17.9V to 30V

V

I

I

= 500mA

O

= 20V to 26V - 5 150

V

I

=+25°C

T

J

T

=+25 °C

J

I

= 5mA to 1.5A

O

= 5mA to 1.0A - 12 100

I

O

= 250mA to 750mA - 5 50

I

O

TJ =+25 °C-5.26.0mA
VI = 17.5V to 30V, TJ =+25 °C--0.8

= 17.5V to 30V, IO = 500mA - - 0.8

I

I

= 5mA to 1.0A - - 0.5

O

= 5mA - -1.0 - mV/°C

O

f = 10Hz to 100KHz
T

=+25 °C

A

f = 120Hz, I
V

= 18.5V to 28.5V

I

IO = 1A, TJ =+25 °C-2.0-V
f = 1KHz - 19 - m Ω
VI= 35V, TA =+25 °C - 250 - mA
TJ=+25°C-2.2-A

KA78XX/KA78XXA

=23V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

14.4 15 15.6

- 10 150

V

= 17.5V to 30V - 11 150

I

= 20V to 26V - 3 75

V

I

- 12 100

-10-µV/Vo

= 500mA

O

-58- dB

V

mV

mV

mA V

Note:

1. Load an d lin e re gul ation ar e sp ecifi ed at con sta nt ju nct ion t empe rat ure . Chan ge i n V
into account separately. Pulse testing with low duty is used.

due to heating effects must be taken

O

17

KA78XX/KA78XXA

Electrical Chara cte ristics (KA7818A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 °C 17.64 18 18.36

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆T I
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 21V to 33V

V

I

= 21V to 33V

V

I

I

= 500mA

O

= 21V to 33V - 5 180

V

I

=+25 °C

T

J

T

=+25°C

J

I

= 5mA to 1.5A

O

= 5mA to 1.0A - 15 100

I

O

= 250mA to 750mA - 7 50

I

O

TJ =+25 °C-5.26.0mA
VI = 21V to 33V, TJ=+25 °C--0.8

= 21V to 33V, IO = 500mA - - 0.8

I

I

= 5mA to 1.0A - - 0.5

O

= 5mA - -1.0 - mV/ °C

O

f = 10Hz to 100KHz
T

=+25°C

A

f = 120Hz, I
V

= 22V to 32V

I

IO = 1A, TJ =+25°C-2.0-V
f = 1KHz - 19 - mΩ
VI= 35V, TA =+25°C - 250 - mA
TJ=+25 °C-2.2-A

= 27V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

17.3 18 18.7

- 15 180

V

= 20.6V to 33V - 15 180

I

= 24V to 30V - 5 90

V

I

- 15 100

-10-

= 500mA

O

-57- dB

V

mV

mV

mA V

µV/Vo

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V
into account separately. Pulse testing with low duty is used.

18

due to heating effects must be taken

O

Electrical Chara cte ristics (KA7824A)

(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V
fied)

Parameter Symbol Conditions Min. Typ. Max. Unit

TJ =+25 °C 23.5 24 24.5

Output Voltage V

Line Regulation (Note1)

Load Regulation (Note1)

Quiescent Current I

Quiescent Current Change ∆I

Output Voltage Drift ∆V/∆T I
Output Noise Voltage V

Ripple Rejection RR
Dropout Voltage V

Output Resistance r
Short Circuit Current I
Peak Current I

O

Regline

Regload

Q

Q

N

Drop

O
SC
PK

= 5mA to 1A, P

I

O

= 27.3V to 38V

V

I

= 27V to 38V

V

I

I

= 500mA

O

= 21V to 33V - 6 240

V

I

=+25 °C

T

J

T

=+25 °C

J

I

= 5mA to 1.5A

O

= 5mA to 1.0A - 15 100

I

O

= 250mA to 750mA - 7 50

I

O

TJ =+25 °C-5.26.0mA
VI = 27.3V to 38V, TJ =+25 °C--0.8

= 27.3V to 38V, IO = 500mA - - 0.8

I

I

= 5mA to 1.0A - - 0.5

O

= 5mA - -1.5 - mV/ °C

O

f = 10Hz to 100KHz
T

= 25 °C

A

f = 120Hz, I
V

= 28V to 38V

I

IO = 1A, TJ =+25 °C-2.0-V
f = 1KHz - 20 - mΩ
VI= 35V, TA =+25 °C - 250 - mA
TJ=+25 °C-2.2-A

KA78XX/KA78XXA

= 33V, C I=0.33µF, C O=0.1µF, unless otherwise speci-

I

≤15W

O

23 24 25

- 18 240

V

= 26.7V to 38V - 18 240

I

= 30V to 36V - 6 120

V

I

- 15 100

-10-µV/Vo

= 500mA

O

-54- dB

V

mV

mV

mA V

Note:

1. Load an d lin e re gul ation ar e sp ecifi ed at con sta nt ju nct ion t empe rat ure . Chan ge i n V
into account separately. Pulse testing with low duty is used.

due to heating effects must be taken

O

19

KA78XX/KA78XXA

Typical Perfomance Characteristics

I

Figure 1. Quiescent Current

Figure 3. Output Voltage

Figure 2. Peak Output Current

Figure 4. Quiescent Current

20

Typical Applications

KA78XX/KA78XXA

Input

Input

Output

Figure 5. DC Parameters

Output

Figure 6. Load Regulati on

Input

Figure 7. Ripple Rejection

Input

Figure 8. Fixed Output Regulator

Output

Output

21

KA78XX/KA78XXA

Input

C

I

C

O

Output

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.

is required if regulator is located an appreciable distance from power Supply filter.

(2) C

I

(3) C

improves stability and transient response.

O

Input

C

I

C

O

Output

22

IRI5IQ≥

V

= VXX(1+R2/R1)+IQR

O

2

Figure 10. Circuit for Increasing Output Voltage

Input

C

I

I

≥5 I

RI

Q

VO = VXX(1+R2/R1)+IQR

2

Figure 11. Adjustable Output Regulator (7 to 30V)

Output

C

O

Input

Input

KA78XX/KA78XXA

Output

Figure 12. High Current Voltage Regulator

Output

Figure 13. High Output Current with Short Circuit Protection

Figure 14. Tracking Voltage Regulator

23

KA78XX/KA78XXA

Figure 15. Split Power Supply ( ±15V-1A)

Output

Input

24

Figure 16. Negative Output Voltage Ci rcuit

Input

Figure 17. Switching Regulator

Output

Mechanical Dimensions

Package

KA78XX/KA78XXA

(1.70)

9.20 ±0.2013.08 ±0.20

1.30 ±0.10

(1.46)

(1.00)

9.90 ±0.20
(8.70)

ø3.60 ±0.10

TO-220

(3.70)(3.00)

(45°)

2.80 ±0.1015.90 ±0.20

18.95MAX.

4.50 ±0.20

+0.10

1.30

–0.05

1.27 ±0.10

2.54TYP

[2.54

±0.20]

10.00 ±0.20

1.52 ±0.10

0.80 ±0.10

2.54TYP

[2.54

±0.20]

10.08 ±0.30

0.50

+0.10
–0.05

2.40 ±0.20

25

KA78XX/KA78XXA

Mechancal Dimensions

Package

6.60

±0.20

5.34

±0.30

(4.34)(0.50) (0.50)

±0.20

0.60

±0.20

0.80

(Continued)

D-PAK

±0.20

0.70

±0.20

±0.20

6.10

2.70

±0.30

9.50

±0.10

0.91

2.30

0.50

±0.10

±0.10

MIN0.55

MAX0.96

2.30TYP

[2.30±0.20]

0.76

±0.10

2.30TYP

[2.30±0.20]

±0.30

9.50

±0.20

6.10

±0.20

2.70

±0.10

0.89

6.60

±0.20

(5.34)

(5.04)
(1.50)

(2XR0.25)

(0.70)

0.76

0.50

1.02

2.30

(0.90)

(0.10) (3.05)

±0.10

±0.10

±0.20
±0.20

(1.00)

26

Ordering Information

Product Number Output Voltage Tolerance Package Operating Temperature

KA7805 / KA7806
KA7808 / KA7809

KA7810
KA7812 / KA7815
KA7818 / KA7824

KA7805A / KA7806A
KA7808A / KA7809A
KA7810A / KA7812A
KA7815A / KA7818A

KA7824A

KA7805R / KA7806R

KA7812R

±4%

±2%

±

4% D-PAKKA7808R / KA7809R

TO-220

0 ~ + 125°C

KA78XX/KA78XXA

27

KA78XX/KA78XXA

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D 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 IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.

LIFE SUPPORT POL I CY

FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
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

2. A critical component in any component of a life support
device or sy stem whose fai lure 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 t iv ene ss .

instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.

www.fairchildsemi.com

6/1/01 0.0m 001

 2001 Fairchild Semiconductor Corporation

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