KA7805ETU - Fairchild

KA78XXE/KA78XXAE — 3-Terminal 1A Positive Voltage Regulator

KA78XXE/KA78XXAE Rev. 1.0.5 1

August 2012

KA78XXE/KA78XXAE

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 Overl o ad Protection

• Short Circuit Protection

• Output Transistor Safe Operating Area Protection

Ordering Information

* Refer to below figure for TM / TF Suffix for DPAK

Product Number Output Voltage Tolerance Package Operating Temperature

KA7805ETU ±4% TO-220 (Dual Gauge) 0C to +125C

KA7806ETU

KA7808ETU

KA7809ETU

KA7810ETU

KA7812ETU

KA7815ETU

KA7818ETU

KA7824ETU

KA7805AETU ±2%

KA7809AETU

KA7810AETU

KA7812AETU

KA7815AETU

KA7824AETU

KA7805ERTF ±4% D-PAK

KA7805ERTM

KA7808ERTM

KA7809ERTM

KA7812ERTM

General Description

The KA78XXE/KA78XXAE series of three-terminal posi-

tive regulator are available in the TO-220/D-PAK package

and with several fixed output voltages, making them use-

ful in a wide range of applications. Each type employs

internal current limiting, thermal shut down and safe oper-

ating area protection, making it essentiall y indestructible.

If adequate heat sinking is provided, they can deliver over

1A output current. Although designed primarily as fixed

voltage regulators, these devices can be used with exter-

nal components to obtain adjustable voltages and cur-

rents.

TM :

TF :

D-PAK Unit Orientation

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KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Block Diagram

Figure 1.

Pin Assignment

Figure 2.

Absolute Maximum Ratings

Symbol Parameter Value Unit

Input Voltage V

= 5V to 18V 35 V

= 24V 40

Thermal Resistance Junction-Cases (TO-220) 5

C/W

Thermal Resistance Junction-Air (TO-220) 65

C/W

OPR

Operating Temperature Range (KA78XXE/AE/ER) 0 to +125 °C

STG

Storage Temperature Range -65 to +150

Starting

Circuit

Input

Reference

Voltage

Current

Generator

SOA

Protection

Thermal

Protection

Series Pass

Element

Error

Amplifier

Output

GND

1. Input

2. GND

3. Output

GND

TO-220 D-PAK

GND

(Dual Gauge)

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KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7805E/KA7805ER)

Refer to test circuit, 0°C < T

< 125°C, I

= 500mA, V

= 10V, C

= 0.33µF, C

= 0.1µF, unless otherwise speciﬁed.

Notes:

1. Load and line regulation are speciﬁed at constant junction temperature. Changes in V

due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

2. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7805E/ER

UnitMin. Typ. Max.

Output Voltage T

= +25

C4.8 5.0 5.2 V

5.0mA

≤

1.0A, P

≤

15W

= 7V to 20V

4.75 5.0 5.25

Regline Line Regulation

(1)

= +25

= 7V to 25V – 4.0 100 mV

= 8V to 12V – 1.6 50

Regload Load Regulation

(1)

= +25

= 5.0mA to1.5A – 9 100 mV

= 250mA to 750mA – 4 50

Quiescent Current T

= +25

C–5.0 8.0 mA

∆

Quiescent Current Change I

= 5mA to 1.0A – 0.03 0.5 mA

= 7V to 25V – 0.3 1.3

∆

TOutput Voltage Drift

(2)

= 5mA – -0.8 – mV/

Output Noise Voltage f = 10Hz to 100kHz, T

= +25

C–42–

V/V

RR Ripple Rejection

(2)

f = 120Hz, V

= 8V to 18V 62 73 – dB

Drop

Dropout Voltage I

= 1A, T

= +25

C–2–V

Output Resistance

(2)

f = 1kHz – 15 – m

Ω

Short Circuit Current V

= 35V, T

= +25

C–230 – mA

Peak Current

(2)

= +25

C–2.2 – A

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KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7806E)

(Continued)

Refer to test circuit, 0°C < T

< 125°C, I

= 500mA, V

= 11V, C

= 0.33µF, C

= 0.1µF, unless otherwise speciﬁed.

Notes:

3. Load and line regulation are speciﬁed at constant junction temperature. Changes in V

due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

4. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7806E/ER

UnitMin. Typ. Max.

Output Voltage T

= +25

C 5.75 6.0 6.25 V

5.0mA

≤

1.0A, P

≤

15W

= 8.0V to 21V

5.7 6.0 6.3

Regline Line Regulation

(3)

= +25

= 8V to 25V – 5 120 mV

= 9V to 13V – 1.5 60

Regload Load Regulation

(3)

= +25

= 5mA to 1.5A – 9 120 mV

= 250mA to 750mA – 3 60

Quiescent Current T

= +25

C–5.0 8.0 mA

∆

Quiescent Current Change I

= 5mA to 1A – – 0.5 mA

= 8V to 25V – – 1.3

∆

VO/∆TOutput Voltage Drift(4) IO = 5mA – -0.8 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–45–µV/Vo

RR Ripple Rejection(4) f = 120Hz

VI = 9V to 19V

59 75 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(4) f = 1kHz – 19 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(4) TJ = +25°C–2.2 – A

5www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7808E/KA7808ER) (Continued)

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

Notes:

5. Load and line regulation are speciﬁed at constant junction temperature. Changes in VO due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

6. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7808E/ER

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 7.7 8.0 8.3 V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 10.5V to 23V

7.6 8.0 8.4

Regline Line Regulation(5) TJ = +25°CV

I = 10.5V to 25V – 5.0 160 mV

VI = 11.5V to 17V – 2.0 80

Regload Load Regulation(5) TJ = +25°CI

O = 5.0mA to 1.5A – 10 160 mV

IO = 250mA to 750mA – 5.0 80

IQQuiescent Current TJ = +25°C–5.0 8.0 mA

∆IQQuiescent Current

Change

IO = 5mA to 1.0A – 0.05 0.5 mA

VI = 10.5A to 25V – 0.5 1.0

∆VO/∆TOutput Voltage Drift(6) IO = 5mA – -0.8 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–52–µV/Vo

RR Ripple Rejection(6) f = 120Hz, VI = 11.5V to 21.5V 56 73 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(6) f = 1kHz – 17 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA

IPK Peak Current(6) TJ = +25°C–2.2 – A

6www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7809E/KA7809ER) (Continued)

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

Notes:

7. Load and line regulation are speciﬁed at constant junction temperature. Changes in VO due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

8. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7809E/ER

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 8.65 9 9.35 V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 11.5V to 24V

8.6 9 9.4

Regline Line Regulation(7) TJ = +25°CV

I = 11.5V to 25V – 6 180 mV

VI = 12V to 17V – 2 90

Regload Load Regulation(7) TJ = +25°CI

O = 5mA to 1.5A – 12 180 mV

IO = 250mA to 750mA – 4 90

IQQuiescent Current TJ = +25°C–5.0 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA

VI = 11.5V to 26V – – 1.3

∆VO/∆TOutput Voltage Drift(8) IO = 5mA – -1 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–58–µV/Vo

RR Ripple Rejection(8) f = 120Hz

VI = 13V to 23V

56 71 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(8) f = 1kHz – 17 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(8) TJ = +25°C–2.2 – A

7www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7810E) (Continued)

Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

9. Load and line regulation are speciﬁed at constant junction temperature. Changes in VO due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

10. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7810E

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 9.6 10.0 10.4 V

5mA ≤ IO ≤ 1A, PO ≤ 15W

VI = 12.5V to 25V

9.5 10.0 10.5

Regline Line Regulation(9) TJ = +25°CV

I = 12.5V to 25V – 10.0 200 mV

VI = 13V to 25V – 3.0 100

Regload Load Regulation(9) TJ = +25°CI

O = 5mA to 1.5A – 12.0 200 mV

IO = 250mA to 750mA – 4.0 400

IQQuiescent Current TJ = +25°C–5.1 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1A – – 0.5 mA

VI = 12.5V to 29V – – 1.0

∆VO/∆TOutput Voltage Drift(10) IO = 5mA – -1.0 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–58.0 – µV/Vo

RR Ripple Rejection(10) f = 120Hz

VO = 13V to 23V

56.0 71.0 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(10) f = 1kHz – 17.0 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(10) TJ = +25°C–2.2 – A

8www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7812E/KA7812ER) (Continued)

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

Notes:

11. 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.

12. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7812E/ER

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 11.5 12 12.5 V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 14.5V to 27V

11.4 12 12.6

Regline Line Regulation(11) TJ = +25°CV

I = 14.5V to 30V – 10 240 mV

VI = 16V to 22V – 3.0 120

Regload Load Regulation(11) TJ = +25°CI

O = 5mA to 1.5A – 11 240 mV

IO = 250mA to 750mA – 5.0 120

IQQuiescent Current TJ = +25°C–5.1 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1.0A – 0.1 0.5 mA

VI = 14.5V to 30V – 0.5 1.0

∆VO/∆TOutput Voltage Drift(12) IO = 5mA – -1 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–76–µV/Vo

RR Ripple Rejection(12) f = 120Hz

VI = 15V to 25V

55 71 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(12) f = 1kHz – 18 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA

IPK Peak Current(12) TJ = +25°C–2.2 – A

9www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7815E) (Continued)

Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

13. 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.

14. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7815E

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 14.4 15 15.6 V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 17.5V to 30V

14.25 15 15.75

Regline Line Regulation(13) TJ = +25°CV

I = 17.5V to 30V – 11 300 mV

VI = 20V to 26V – 3 150

Regload Load Regulation(13) TJ = +25°CI

O = 5mA to 1.5A – 12 300 mV

IO = 250mA to 750mA – 4 150

IQQuiescent Current TJ = +25°C–5.2 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA

VI = 17.5V to 30V – – 1.0

∆VO/∆TOutput Voltage Drift(14) IO = 5mA – -1 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–90–µV/Vo

RR Ripple Rejection(14) f = 120Hz

VI = 18.5V to 28.5V

54 70 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(14) f = 1kHz – 19 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(14) TJ = +25°C–2.2 – A

10 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7818E) (Continued)

Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 27V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

15. 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.

16. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7818E

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 17.3 18 18.7 V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 21V to 33V

17.1 18 18.9

Regline Line Regulation(15) TJ = +25°CV

I = 21V to 33V – 15 360 mV

VI = 24V to 30V – 5 180

Regload Load Regulation(15) TJ = +25°CI

O = 5mA to 1.5A – 15 360 mV

IO = 250mA to 750mA – 5.0 180

IQQuiescent Current TJ = +25°C–5.2 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1.0A – – 0.5 mA

VI = 21V to 33V – – 1

∆VO/∆TOutput Voltage Drift(16) IO = 5mA – -1 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–110 – µV/Vo

RR Ripple Rejection(16) f = 120Hz

VI = 22V to 32V

53 69 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C – 2 – V

rOOutput Resistance(16) f = 1kHz – 22 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(16) TJ = +25°C–2.2 – A

11 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7824E) (Continued)

Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

17. 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.

18. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7824E

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C232425V

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W

VI = 27V to 38V

22.8 24 25.25

Regline Line Regulation(17) TJ = +25°CV

I = 27V to 38V – 17 480 mV

VI = 30V to 36V – 6 240

Regload Load Regulation(17) TJ = +25°CI

O = 5mA to 1.5A – 15 480 mV

IO = 250mA to 750mA – 5.0 240

IQQuiescent Current TJ = +25°C–5.2 8.0 mA

∆IQQuiescent Current Change IO = 5mA to 1.0A – 0.1 0.5 mA

VI = 27V to 38V – 0.5 1

∆VO/∆TOutput Voltage Drift(18) IO = 5mA – -1.5 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–60–µV/Vo

RR Ripple Rejection(18) f = 120Hz

VI = 28V to 38V

50 67 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(18) f = 1kHz – 28 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–230 – mA

IPK Peak Current(18) TJ = +25°C–2.2 – A

12 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7805AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

19. 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.

20. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7805AE

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 4.9 5 5.1 V

IO = 5mA to 1A, PO ≤ 15W

VI = 7.5V to 20V

4.8 5 5.2

Regline Line Regulation(19) VI = 7.5V to 25V

IO = 500mA

–550mV

VI = 8V to 12V – 3 50

TJ = +25°CV

I = 7.3V to 20V – 5 50

VI = 8V to 12V – 1.5 25

Regload Load Regulation(19) TJ = +25°C

IO = 5mA to 1.5A

–9100 mV

IO = 5mA to 1A – 9 100

IO = 250mA to 750mA – 4 50

IQQuiescent Current TJ = +25°C–5.0 6.0 mA

∆IQQuiescent Current Change IO = 5mA to 1A – – 0.5 mA

VI = 8 V to 25V, IO = 500mA – – 0.8

VI = 7.5V to 20V, TJ = +25°C– –0.8

∆V/∆TOutput Voltage Drift(20) IO = 5mA – -0.8 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz

TA = +25°C

–10 –µV/Vo

RR Ripple Rejection(20) f = 120Hz, IO = 500mA

VI = 8V to 18V

–68 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2–V

rOOutput Resistance(20) f = 1kHz – 17 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(20) TJ = +25°C–2.2 – A

13 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7809AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

21. Load and line regulation are speciﬁed at constant junction temperature. Change in V

due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

22. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7809AE

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 8.82 9.0 9.18 V

IO = 5mA to 1A, PO ≤ 15W

VI = 11.2V to 24V

8.65 9.0 9.35

Regline Line Regulation(21) VI = 11.7V to 25V, IO = 500mA – 6 90 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

Regload Load Regulation(21) TJ = +25°C, IO = 5mA to 1.0A – 12 100 mV

IO = 5mA to 1.0A – 12 100

IO = 250mA to 750mA – 5 50

IQQuiescent Current TJ = +25°C–5.0 6.0 mA

∆IQQuiescent Current Change VI = 11.7V to 25V, TJ = +25°C––0.8 mA

VI = 12V to 25V, IO = 500mA – – 0.8

IO = 5mA to 1.0A – – 0.5

∆V/∆TOutput Voltage Drift(22) IO = 5mA – -1.0 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C– 10 –µV/Vo

RR Ripple Rejection(22) f = 120Hz, IO = 500mA

VI = 12V to 22V

–62 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(22) f = 1kHz – 17 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(22) TJ = +25°C–2.2 – A

14 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7810AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

23. Load and line regulation are speciﬁed at constant junction temperature. Change in V

due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

24. These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7810AE

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 9.8 10.0 10.2 V

IO = 5mA to 1A, PO ≤ 15W

VI = 12.8V to 25V

9.6 10.0 10.4

Regline Line Regulation(23) VI = 12.8V to 26V, IO = 500mA – 8.0 100 mV

VI = 13V to 20V – 4.0 50.0

TJ = +25°C VI = 12.5V to 25V – 8.0 100

VI = 13V to 20V – 3.0 50.0

Regload Load Regulation(23) TJ = +25°C, IO = 5mA to 1.5A – 12.0 100 mV

IO = 5mA to 1mA – 12.0 100

IO = 250mA to 750mA – 5.0 50.0

IQQuiescent Current TJ = +25°C–5.0 6.0 mA

∆IQQuiescent Current Change IO = 5mA to 1A – – 0.5 mA

VI = 12.8V to 25V, IO = 500mA – – 0.8

VI = 13V to 26V, TJ = +25°C––0.5

∆VO/∆TOutput Voltage Drift(24) IO = 5mA – -1.0 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C–10.0 – µV/Vo

RR Ripple Rejection(24) f = 120Hz, IO = 500mA

VI = 14V to 24V

– 62.0 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(24) f = 1kHz – 17.0 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(24) TJ = +25°C–2.2 – A

15 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7812AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

25.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.

26.These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7812AE

UnitMin. Typ. Max.

VOOutput Voltage 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

Regline Line Regulation(25) VI = 14.8V to 30V, IO = 500mA – 10 120 mV

VI = 16V to 22V – 4 120

TJ = +25°CV

I = 14.5V to 27V – 10 120

VI = 16V to 22V – 3 60

Regload Load Regulation(25) TJ = +25°C, IO = 5mA to 1.5A – 12 100 mV

IO = 5mA to 1.0A – 12 100

IO = 250mA to 750mA – 5 50

IQQuiescent Current TJ = +25°C–5.1 6.0 mA

∆IQQuiescent Current Change 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

∆V/∆TOutput Voltage Drift(26) IO = 5mA – -1.0 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C– 10 –µV/Vo

RR Ripple Rejection(26) f = 120Hz, IO = 500mA

VI = 14V to 24V

–60 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(26) f = 1kHz – 18 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(26) TJ = +25°C–2.2 – A

16 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7815AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 23V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

27. Load and line regulation are speciﬁed at constant junction temperature. Change in V

due to heating effects must

be taken into account separately. Pulse testing with low duty is used.

28.These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7815AE

UnitMin. Typ. Max.

VOOutput Voltage 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

Regline Line Regulation(27) VI = 17.9V to 30V, IO = 500mA – 10 150 mV

VI = 20V to 26V – 5 150

TJ = +25°CV

I = 17.5V to 30V – 11 150

VI = 20V to 26V – 3 75

Regload Load Regulation(27) TJ = +25°C, IO = 5mA to 1.5A – 12 100 mV

IO = 5mA to 1.0A – 12 100

IO = 250mA to 750mA – 5 50

IQQuiescent Current TJ = +25°C–5.2 6.0 mA

∆IQQuiescent Current Change 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

∆V/∆TOutput Voltage Drift(28) IO = 5mA – -1.0 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = +25°C– 10 –µV/Vo

RR Ripple Rejection(28) f = 120Hz, IO = 500mA

VI = 18.5V to 28.5V

–58 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(28) f = 1kHz – 19 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(28) TJ = +25°C–2.2 – A

17 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Electrical Characteristics (KA7824AE) (Continued)

Refer to the test circuits. 0°C < TJ < +125°C, IO = 1A, VI = 33V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

29.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.

30.These parameters, although guaranteed, are not 100% tested in production.

Symbol Parameter Conditions

KA7824AE

UnitMin. Typ. Max.

VOOutput Voltage TJ = +25°C 23.5 24 24.5 V

IO = 5mA to 1A, PO ≤ 15W

VI = 27.3V to 38V

23 24 25

Regline Line Regulation(29) VI = 27V to 38V, IO = 500mA – 18 240 mV

VI = 21V to 33V – 6 240

TJ = +25°CV

I = 26.7V to 38V – 18 240

VI = 30V to 36V – 6 120

Regload Load Regulation(29) TJ = +25°C, IO = 5mA to 1.5A – 15 100 mV

IO = 5mA to 1.0A – 15 100

IO = 250mA to 750mA – 7 50

IQQuiescent Current TJ = +25°C–5.2 6.0 mA

∆IQQuiescent Current Change 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

∆V/∆TOutput Voltage Drift(30) IO = 5mA – -1.5 – mV/°C

VNOutput Noise Voltage f = 10Hz to 100kHz, T

A = 25°C–10–µV/Vo

RR Ripple Rejection(30) f = 120Hz, IO = 500mA

VI = 28V to 38V

–54 – dB

VDrop Dropout Voltage IO = 1A, TJ = +25°C–2.0 – V

rOOutput Resistance(30) f = 1kHz – 20 – mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C–250 – mA

IPK Peak Current(30) TJ = +25°C–2.2 – A

18 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Typical Performance Characteristics

Figure 3. Quiescent CurrentFigure 4. Peak Output Current

Figure 5. Output Voltage Figure 6. Quiescent Current

5.75

5.5

5.25

4.75

4.5

VI = 10V

VO = 5V

IO = 5mA

-25-50 0 025 50 75 100 125

QUIESCENT CURRENT (mA)

JUNCTION TEMPERATURE (°C)

2.5

1.5

TJ = 25°C

∆VO = 100mV

5101520253035

OUTPUT CURRENT (A)

INPUT-OUTPUT DIFFERENTIAL (V)

1.02

1.01

.99

.98

VI – VO = 5V

IO = 5mA

-25-50 0 25 50 75 100 125

NORMALIZED OUTPUT VOLTAGE (V)

JUNCTION TEMPERATURE (°C)

6.5

5.5

4.5

TJ = 25°C

VO = 5V

IO = 10mA

1051520253035

QUIESCENT CURRENT (mA)

INPUT VOLTAGE (V)

19 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Typical Applications

Figure 7. DC Parameters

Figure 8. Load Regulation

Figure 9. Ripple Rejection

0.1µF

CI0.33µF

Output

Input

KA78XXE

KA78XXE 3

0.33µF

270pF

100Ω30µS

2N6121

OR EQ

Output

Input

KA78XXE

Output

Input

5.1Ω

0.33µF 2

470µF

120Hz +

20 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Figure 10. Fixed Output Regulator

Figure 11. 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.

Figure 12. Circuit for Increasing Output Voltage

0.1µF

CI0.33µF

Output

Input

KA78XXE

0.1µF

CI0.33µF

Output

Input

KA78XXE

2Vxx

IO = R1 +IQ

Vxx

0.1µF

CI0.33µF

Output

Input

KA78XXE

2Vxx R1

IRI ≥ 51Q

VO = VXX(1 + R2 / R1) + IQR2

21 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Figure 13. Adjustable Output Regulator (7 to 30V)

Figure 14. High Current Voltage Regulator

Figure 15. High Output Current with Short Circuit Protection

KA741

0.33µF

Input Output

0.1µF

KA7805E

10KΩ

IRI ≥ 5 IQ

VO = VXX(1 + R2 / R1) + IQR2

1KA78XXE

Output

Input

3Ω

0.33µF

IREG

0.1µF

IOVo

IQ1

IO = IREG + BQ1 (IREG–VBEQ1/R1)

KA78XXE

Output

0.1µF

0.33µF

3Ω

Input

Q1 = TIP42

Q2 = TIP42

RSC = I

VBEQ2

R1 = VBEQ1

IREG–IQ1 BQ1

22 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Figure 16. Tracking Voltage Regulator

Figure 17. Split Power Supply ( ±15V-1A)

KA78XXE

KA741

0.1µF

0.33µF

434.7kΩ

4.7kΩ

TIP42

COMMON

-VO

-VIN

0.33µF 0.1µF

2.2µF 1µF +

1N4001

+15V

-15V

+20V

-20V

KA7815E

KA7915E

23 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Figure 18. Negative Output Voltage Circuit

Figure 19. Switching Regulator

KA78XXE

Output

Input

0.1µF

KA78XXE

1mH

2000µF

Output

Input D45H11

0.33uF

470Ω

4.7Ω

10uF

0.5Ω

24 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

KA78XXE/KA78XXAE 3-Terminal 1A Positive Voltage Regulator

Mechanical Dimensions

Dimensions in millimeters

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 ±0.10

15.90 ±0.20

10.08 ±0.30 18.95MAX.

(1.70)

(3.70)(3.00)

(1.46)

(1.00)

(45°)

9.20 ±0.20

13.08 ±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 [ DUAL GAUGE ]

KA78XXE/KA78XXAE — 3-Terminal 1A Positive Voltage Regulator

Mechanical Dimensions (Continued)

Dimensions in millimeters

D-PAK

25 www.fairchildsemi.com

KA78XXE/KA78XXAE Rev. 1.0.5

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Advance Information Formative / In Design Datasheet contains the design specifications for product development. Specifications may change

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Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild

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Rev. I61