7805 voltage regulator by bikash panda

www.fairchildsemi.com

KA78XX/KA78XXA

3-Terminal 1A Positive Voltage Regulator Features

Description

• • • • •

The KA78XX/KA78XXA series of three-terminal 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 current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

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

TO-220

1 D-PAK

1 1. Input 2. GND 3. Output

Internal Block Digram

KA78XX/KA78XXA

Absolute Maximum Ratings Parameter

Symbol

Value

Unit

VI VI

35 40

V V

RθJC

Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Cases (TO-220)

C/W

°C/W

Thermal Resistance Junction-Air (TO-220)

RθJA

Operating Temperature Range (KA78XX/A/R)

TOPR

0 ~ +125

-65 ~ +150

Storage Temperature Range

TSTG

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

Output Voltage

Symbol

Conditions

5.0

5.2

5.0mA ≤ Io ≤ 1.0A, PO ≤ 15W VI = 7V to 20V

4.75

5.0

5.25

TJ=+25 oC

Load Regulation (Note1)

Regload

TJ=+25 oC

TJ =+25 oC

Output Voltage Drift

∆IQ ∆VO/∆T

VO = 7V to 25V

4.0

100

VI = 8V to 12V

1.6

IO = 5.0mA to1.5A

100

IO =250mA to 750mA

5.0

8.0

mV mA

0.03

0.5

0.3

1.3

IO= 5mA

-0.8

mV/ oC

µV/VO

IO = 1A, TJ =+25 oC

f = 1KHz

mΩ

230

2.2

Ripple Rejection

f = 120Hz VO = 8V to 18V

Dropout Voltage

VDrop

Peak Current

f = 10Hz to 100KHz, TA=+25 oC

Short Circuit Current

IO = 5mA to 1.0A

Unit

VI= 7V to 25V

Output Noise Voltage

Output Resistance

Typ. Max.

4.8

Regline

Quiescent Current Change

Min.

TJ =+25 oC

Line Regulation (Note1)

Quiescent Current

KA7805

ISC

VI = 35V, TA =+25

IPK

TJ =+25 C

Note: 1. 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.

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

Output Voltage

Symbol

Conditions

KA7806 Min. Typ. Max.

TJ =+25 oC

5.75

6.0

6.25

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 8.0V to 21V

5.7

6.0

6.3

VI = 8V to 25V

120

VI = 9V to 13V

1.5

IO =5mA to 1.5A

120

IO =250mA to750mA

Unit

Line Regulation (Note1)

Regline

TJ =+25 oC

Load Regulation (Note1)

Regload

TJ =+25 oC

5.0

8.0

IO = 5mA to 1A

0.5

VI = 8V to 25V

1.3

IO = 5mA

-0.8

mV/ o C

µV/Vo

IO = 1A, TJ =+25 oC

Quiescent Current Quiescent Current Change Output Voltage Drift

∆IQ ∆VO/∆T

Output Noise Voltage

f = 10Hz to 100KHz, TA =+25 oC

Ripple Rejection

f = 120Hz VI = 9V to 19V

Dropout Voltage

VDrop

mV mV mA mA

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA=+25 oC

250

2.2

Peak Current

IPK

TJ =+25 C

Note: 1. 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.

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

Output Voltage

Symbol

KA7808

Conditions

Min.

Typ.

Max.

TJ =+25 oC

7.7

8.0

8.3

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 10.5V to 23V

7.6

8.0

8.4

VI = 10.5V to 25V

5.0

160

VI = 11.5V to 17V

2.0

IO = 5.0mA to 1.5A

160

IO= 250mA to 750mA

5.0

Unit

Line Regulation (Note1)

Regline

TJ =+25 oC

Load Regulation (Note1)

Regload

TJ =+25 oC

5.0

8.0

IO = 5mA to 1.0A

0.05

0.5

VI = 10.5A to 25V

0.5

1.0

-0.8

mV/ oC

Quiescent Current Quiescent Current Change Output Voltage Drift

∆IQ ∆VO/∆T

IO = 5mA

mV mA mA

Output Noise Voltage

f = 10Hz to 100KHz, TA =+25 C

µV/Vo

Ripple Rejection

f = 120Hz, VI= 11.5V to 21.5V

IO = 1A, TJ=+25 C

f = 1KHz

mΩ

230

2.2

Dropout Voltage Output Resistance

VDrop rO

Short Circuit Current

ISC

VI= 35V, TA

Peak Current

IPK

TJ =+25 oC

=+25 oC

Note: 1. 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.

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

Output Voltage

Symbol

Conditions

KA7809 Min.

Typ.

Max.

TJ =+25 oC

8.65

9.35

5.0mA≤ IO ≤1.0A, PO ≤15W VI= 11.5V to 24V

8.6

9.4

VI = 11.5V to 25V

180

VI = 12V to 17V

IO = 5mA to 1.5A

180

IO = 250mA to 750mA

Unit

Line Regulation (Note1)

Regline

TJ=+25 oC

Load Regulation (Note1)

Regload

TJ=+25 oC

5.0

8.0

IO = 5mA to 1.0A

0.5

VI = 11.5V to 26V

1.3

IO = 5mA

-1

mV/ oC

f = 10Hz to 100KHz, TA =+25 oC

µV/Vo

f = 120Hz VI = 13V to 23V

IO = 1A, TJ=+25 oC

f = 1KHz

mΩ

250

2.2

Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance

∆IQ ∆VO/∆T

VDrop rO

Short Circuit Current

ISC

VI= 35V, TA

Peak Current

IPK

TJ= +25 oC

=+25 oC

mV mV mA mA

Note: 1. 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.

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

Output Voltage

Symbol

Conditions

KA7810 Min.

Typ. Max.

TJ =+25 oC

9.6

10.4

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 12.5V to 25V

9.5

10.5

VI = 12.5V to 25V

200

VI = 13V to 25V

100

IO = 5mA to 1.5A

200

IO = 250mA to 750mA

400

Unit

Line Regulation (Note1)

Regline

TJ =+25 oC

Load Regulation (Note1)

Regload

TJ =+25 oC

5.1

8.0

IO = 5mA to 1.0A

0.5

VI = 12.5V to 29V

1.0

IO = 5mA

-1

mV/ oC

f = 10Hz to 100KHz, TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz VI = 13V to 23V

Dropout Voltage

VDrop

IO = 1A, TJ=+25 oC

f = 1KHz

mΩ

250

2.2

Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage

Output Resistance

∆IQ ∆VO/∆T

Short Circuit Current

ISC

VI = 35V, TA

Peak Current

IPK

TJ =+25 oC

=+25 oC

mV mV mA mA

Note: 1. 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.

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

KA7812/KA7812R

Unit

Min. Typ.

Max.

TJ =+25 oC

11.5

12.5

5.0mA ≤ IO≤1.0A, PO≤15W VI = 14.5V to 27V

11.4

12.6

VI = 14.5V to 30V

240

VI = 16V to 22V

3.0

120

IO = 5mA to 1.5A

240

IO = 250mA to 750mA

5.0

120

TJ =+25 oC

5.1

8.0

IO = 5mA to 1.0A

0.1

0.5

VI = 14.5V to 30V

0.5

1.0

IO = 5mA

-1

mV/ oC

f = 10Hz to 100KHz, TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz VI = 15V to 25V

Dropout Voltage

VDrop

IO = 1A, TJ=+25 oC

f = 1KHz

mΩ

230

2.2

Output Voltage

TJ =+25 oC

Line Regulation (Note1)

Regline

Load Regulation (Note1)

Regload TJ =+25 oC

Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage

Output Resistance

IQ ∆IQ ∆VO/∆T

Short Circuit Current

ISC

VI = 35V, TA

Peak Current

IPK

TJ = +25 oC

=+25 oC

V mV mV mA mA

Note: 1. 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.

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

Output Voltage

Symbol

Conditions

KA7815 Min.

Typ. Max.

TJ =+25 oC

14.4

15.6

5.0mA ≤ IO≤1.0A, PO≤15W VI = 17.5V to 30V

14.25

15.75

VI = 17.5V to 30V

300

VI = 20V to 26V

150

IO = 5mA to 1.5A

300

IO = 250mA to 750mA

150

Unit

Line Regulation (Note1)

Regline

TJ =+25 oC

Load Regulation (Note1)

Regload

TJ =+25 oC

5.2

8.0

IO = 5mA to 1.0A

0.5

VI = 17.5V to 30V

1.0

IO = 5mA

-1

mV/ oC

f = 10Hz to 100KHz, TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz VI = 18.5V to 28.5V

Dropout Voltage

VDrop

IO = 1A, TJ=+25 oC

f = 1KHz

mΩ

250

2.2

Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage

Output Resistance

∆IQ ∆VO/∆T

Short Circuit Current

ISC

VI = 35V, TA

Peak Current

IPK

TJ =+25 oC

=+25 oC

mV mV mA mA

Note: 1. 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.

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

Output Voltage

Symbol

Conditions

KA7818 Min.

Typ. Max.

TJ =+25 oC

17.3

18.7

5.0mA ≤ IO ≤1.0A, PO ≤15W VI = 21V to 33V

17.1

18.9

VI = 21V to 33V

360

VI = 24V to 30V

180

IO = 5mA to 1.5A

360

IO = 250mA to 750mA

5.0

180

Unit

Line Regulation (Note1)

Regline

TJ =+25 oC

Load Regulation (Note1)

Regload

TJ =+25 oC

5.2

8.0

IO = 5mA to 1.0A

0.5

VI = 21V to 33V

IO = 5mA

-1

mV/ oC

f = 10Hz to 100KHz, TA =+25 oC

110

µV/Vo

Ripple Rejection

f = 120Hz VI = 22V to 32V

Dropout Voltage

VDrop

IO = 1A, TJ=+25 oC

f = 1KHz

mΩ

250

2.2

Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage

Output Resistance

∆IQ ∆VO/∆T

Short Circuit Current

ISC

VI = 35V, TA

Peak Current

IPK

TJ =+25 oC

=+25 oC

mV mV mA mA

Note: 1. 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.

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

Typ.

Max.

22.8

25.25

VI = 27V to 38V

480

VI = 30V to 36V

240

IO = 5mA to 1.5A

480

IO = 250mA to 750mA

5.0

240

TJ =+25 oC

5.2

8.0

IO = 5mA to 1.0A

0.1

0.5

VI = 27V to 38V

0.5

-1.5

mV/ o C

µV/Vo

IO = 1A, TJ=+25 oC

5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 27V to 38V TJ =+25 oC

Line Regulation (Note1)

Regline

Load Regulation (Note1)

Regload TJ =+25 oC

Quiescent Current Quiescent Current Change Output Voltage Drift

IQ ∆IQ

Unit

Min.

TJ =+25 oC Output Voltage

KA7824

∆VO/∆T IO = 5mA

Output Noise Voltage

f = 10Hz to 100KHz, TA =+25 oC

Ripple Rejection

f = 120Hz VI = 28V to 38V

Dropout Voltage

VDrop

V mV mV mA mA

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI = 35V, TA=+25 oC

230

2.2

Peak Current

IPK

TJ =+25 C

Note: 1. 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.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

4.9

5.1

4.8

5.2

VI = 7.5V to 25V IO = 500mA

VI = 8V to 12V

TJ =+25 Output Voltage

Line Regulation (Note1)

Regline

IO = 5mA to 1A, PO ≤ 15W VI = 7.5V to 20V

VI= 7.3V to 20V

VI= 8V to 12V

1.5

TJ =+25 IO = 5mA to 1.5A

100

IO = 5mA to 1A

100

TJ =+25 oC oC

Load Regulation (Note1)

Quiescent Current Quiescent Current Change

Regload

IQ ∆IQ ∆V/∆T

IO = 250mA to 750mA

TJ =+25 oC

5.0

6.0

IO = 5mA to 1A

0.5

0.8

Io = 5mA

-0.8

mV/ oC

VI = 8 V to 25V, IO = 500mA VI = 7.5V to 20V, TJ =+25

Output Voltage Drift

Unit

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 8V to 18V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 oC

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 oC

250

2.2

Peak Current

IPK

TJ= +25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

5.58

6.12

5.76

6.24

VI= 8.6V to 25V IO = 500mA

VI= 9V to 13V

TJ =+25 Output Voltage

Line Regulation (Note1)

Regline

IO = 5mA to 1A, PO ≤ 15W VI = 8.6V to 21V

VI= 8.3V to 21V

VI= 9V to 13V

1.5

TJ =+25 IO = 5mA to 1.5A

100

IO = 5mA to 1A

100

TJ =+25 oC oC

Load Regulation (Note1)

Quiescent Current Quiescent Current Change

Regload

IQ ∆IQ ∆V/∆T

IO = 250mA to 750mA

5.0

TJ =+25 oC

4.3

6.0

IO = 5mA to 1A

0.5

VI = 9V to 25V, IO = 500mA

0.8

=+25 oC

0.8

IO = 5mA

-0.8

mV/ oC

VI= 8.5V to 21V, TJ Output Voltage Drift

Unit

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 9V to 19V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 oC

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 oC

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

7.84

8.16

7.7

8.3

VI= 10.6V to 25V IO = 500mA

VI= 11V to 17V

VI= 10.4V to 23V

VI= 11V to 17V

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1A

100

IO = 250mA to 750mA

TJ =+25 oC

5.0

6.0

IO = 5mA to 1A

0.5

0.8

IO = 5mA

-0.8

mV/ oC

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25 oC

IO = 5mA to 1A, PO ≤15W VI = 10.6V to 23V

TJ =+25 oC =+25 oC

Load Regulation (Note1)

Quiescent Current Quiescent Current Change

Regload

IQ ∆IQ

VI = 11V to 25V, IO = 500mA VI= 10.6V to 23V, TJ =+25

Output Voltage Drift

∆V/∆T

Unit V

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 oC

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 11.5V to 21.5V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 oC

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 oC

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

8.82

9.0

9.18

8.65

9.0

9.35

VI= 11.7V to 25V IO = 500mA

VI= 12.5V to 19V

VI= 11.5V to 24V

VI= 12.5V to 19V

TJ IO = 5mA to 1.0A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25 °C

5.0

6.0

VI = 11.7V to 25V, TJ=+25 C

0.8

VI = 12V to 25V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.0

mV/ °C

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25°C

IO = 5mA to 1A, PO≤15W VI = 11.2V to 24V

TJ =+25°C =+25°C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 °C

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 12V to 22V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 °C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 °C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

9.8

10.2

9.6

10.4

VI= 12.8V to 26V IO = 500mA

100

VI= 13V to 20V

VI= 12.5V to 25V

100

VI= 13V to 20V

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25 °C

5.0

6.0

VI = 13V to 26V, TJ=+25 C

0.5

VI = 12.8V to 25V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.0

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25°C

IO = 5mA to 1A, PO ≤ 15W VI =12.8V to 25V

TJ =+25 °C =+25 °C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

mA mA mV/ °C µV/Vo

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 °C

Ripple Rejection

f = 120Hz, IO = 500mA VI = 14V to 24V

Dropout Voltage

VDrop

IO = 1A, TJ =+25°C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 °C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

11.75

12.25

11.5

12.5

VI= 14.8V to 30V IO = 500mA

120

VI= 16V to 22V

120

VI= 14.5V to 27V

120

VI= 16V to 22V

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25°C

5.1

6.0

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25 °C

IO = 5mA to 1A, PO ≤15W VI = 14.8V to 27V

TJ =+25 °C =+25 °C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

VI = 15V to 30V, TJ=+25 C

0.8

VI = 14V to 27V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.0

mV/°C

Output Noise Voltage

f = 10Hz to 100KHz TA =+25°C

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 14V to 24V

Dropout Voltage

VDrop

IO = 1A, TJ =+25°C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 °C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

14.7

15.3

14.4

15.6

VI= 17.9V to 30V IO = 500mA

150

VI= 20V to 26V

150

VI= 17.5V to 30V

150

VI= 20V to 26V

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25 °C

5.2

6.0

VI = 17.5V to 30V, TJ =+25 C

0.8

VI = 17.5V to 30V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.0

mV/°C

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25 °C

IO = 5mA to 1A, PO ≤15W VI = 17.7V to 30V

TJ =+25°C =+25 °C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA =+25 °C

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 18.5V to 28.5V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 °C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 °C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

17.64

18.36

17.3

18.7

VI= 21V to 33V IO = 500mA

180

VI= 21V to 33V

180

VI= 20.6V to 33V

180

VI= 24V to 30V

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25 °C

5.2

6.0

VI = 21V to 33V, TJ=+25 C

0.8

VI = 21V to 33V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.0

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25 °C

IO = 5mA to 1A, PO ≤15W VI = 21V to 33V

TJ =+25 °C =+25°C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

mA mA mV/ °C µV/Vo

Output Noise Voltage

f = 10Hz to 100KHz TA =+25°C

Ripple Rejection

f = 120Hz, IO = 500mA VI = 22V to 32V

Dropout Voltage

VDrop

IO = 1A, TJ =+25°C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25°C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Electrical Characteristics (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 specified) Parameter

Symbol

Conditions

Min.

Typ.

Max.

23.5

24.5

VI= 27V to 38V IO = 500mA

240

VI= 21V to 33V

240

VI= 26.7V to 38V

240

VI= 30V to 36V

120

TJ IO = 5mA to 1.5A

100

IO = 5mA to 1.0A

100

IO = 250mA to 750mA

TJ =+25 °C

5.2

6.0

VI = 27.3V to 38V, TJ =+25 C

0.8

VI = 27.3V to 38V, IO = 500mA

0.8

IO = 5mA to 1.0A

0.5

IO = 5mA

-1.5

mV/ °C

TJ Output Voltage

Line Regulation (Note1)

Regline

=+25 °C

IO = 5mA to 1A, PO ≤15W VI = 27.3V to 38V

TJ =+25 °C =+25 °C

Load Regulation (Note1)

Quiescent Current

Regload

Quiescent Current Change Output Voltage Drift

∆IQ ∆V/∆T

Unit V

mA mA

Output Noise Voltage

f = 10Hz to 100KHz TA = 25 °C

µV/Vo

Ripple Rejection

f = 120Hz, IO = 500mA VI = 28V to 38V

Dropout Voltage

VDrop

IO = 1A, TJ =+25 °C

2.0

Output Resistance

f = 1KHz

mΩ

Short Circuit Current

ISC

VI= 35V, TA =+25 °C

250

2.2

Peak Current

IPK

TJ=+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

KA78XX/KA78XXA

Typical Perfomance Characteristics

Figure 1. Quiescent Current

Figure 2. Peak Output Current

Figure 3. Output Voltage

Figure 4. Quiescent Current

KA78XX/KA78XXA

Typical Applications

Input

Output

Figure 5. DC Parameters

Input

Output

Figure 6. Load Regulation

Input

Output

Figure 7. Ripple Rejection

Input

Output

Figure 8. Fixed Output Regulator

KA78XX/KA78XXA

Output

Input CI CO

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.

Output

Input

CI CO

I RI â&#x2030;Ľ 5IQ VO = VXX(1+R2/R1)+IQR2 Figure 10. Circuit for Increasing Output Voltage

Input

Output

CO CI

IRI â&#x2030;Ľ5 IQ VO = VXX(1+R2/R1)+IQR2 Figure 11. Adjustable Output Regulator (7 to 30V)

KA78XX/KA78XXA

Input

Output

Figure 12. High Current Voltage Regulator

Input

Output

Figure 13. High Output Current with Short Circuit Protection

Figure 14. Tracking Voltage Regulator

KA78XX/KA78XXA

Figure 15. Split Power Supply ( Âą15V-1A)

Output Input

Figure 16. Negative Output Voltage Circuit

Output

Input

Figure 17. Switching Regulator

KA78XX/KA78XXA

Mechanical Dimensions Package

TO-220 4.50 ±0.20

2.80 ±0.10 (3.00)

+0.10

1.30 –0.05

18.95MAX.

(3.70)

ø3.60 ±0.10

15.90 ±0.20

1.30 ±0.10

(8.70)

(1.46)

9.20 ±0.20

(1.70)

9.90 ±0.20

1.52 ±0.10

0.80 ±0.10 2.54TYP [2.54 ±0.20]

10.08 ±0.30

(1.00)

13.08 ±0.20

)

(45°

1.27 ±0.10

+0.10

0.50 –0.05

2.40 ±0.20

2.54TYP [2.54 ±0.20]

10.00 ±0.20

KA78XX/KA78XXA

Mechancal Dimensions (Continued) Package

D-PAK

MIN0.55

0.91 ±0.10

9.50 ±0.30

0.50 ±0.10

0.76 ±0.10

0.50 ±0.10 1.02 ±0.20

2.30TYP [2.30±0.20]

(3.05)

(2XR0.25)

(0.10)

2.70 ±0.20

6.10 ±0.20

9.50 ±0.30

0.76 ±0.10

(1.00)

6.60 ±0.20 (5.34) (5.04) (1.50)

(0.90)

2.30 ±0.20

(0.70)

2.30TYP [2.30±0.20]

(0.50)

2.30 ±0.10

0.89 ±0.10

MAX0.96

(4.34)

2.70 ±0.20

0.80 ±0.20

0.60 ±0.20

(0.50)

6.10 ±0.20

5.34 ±0.30

0.70 ±0.20

6.60 ±0.20

KA78XX/KA78XXA

Ordering Information Product Number

Output Voltage Tolerance

Package

Operating Temperature

KA7805 / KA7806 KA7808 / KA7809 KA7810

±4%

KA7812 / KA7815 KA7818 / KA7824

TO-220

KA7805A / KA7806A KA7808A / KA7809A KA7810A / KA7812A

0 ~ + 125°C ±2%

KA7815A / KA7818A KA7824A KA7805R / KA7806R KA7808R / KA7809R

±4%

D-PAK

KA7812R

KA78XX/KA78XXA

DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. 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 RIGHTS OF OTHERS. LIFE SUPPORT POLICY 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 system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com 6/1/01 0.0m 001 Stock#DSxxxxxxxx  2001 Fairchild Semiconductor Corporation

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