Fairchild KA78XXE, KA78XXAE service manual

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KA78XXE/KA78XXAE

3-Terminal 1A Positive Voltage Regulator

www.fairchildsemi.com

Features

• Output Current up to 1A

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

• Thermal Overload Protection

• Short Circuit Protection

• Output Transistor Safe Operating Area Protection

Internal Block Diagram

Description

The KA78XXE/KA78XXAE 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.

TO-220

1

D-PAK

1

1. Input 2. GND 3. Output

GND

INPUT

1

CURRENT GENERATOR

STARTING CIRCUIT

REFERENCE VOLTAGE

ERROR AMPLIFIER

SOA PROTECTION

THERMAL PROTECTION

SERIES PASS ELEMENT

OUTPUT

3

GND

2

Rev. 1.0.0

KA78XXE/KA78XXAE

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 (KA78XXE/AE/ER) T Storage Temperature Range T

V

I

V

I

θJC θJA

OPR STG

35 40

V V

5 °C/W

65 °C/W

0 ~ +125 °C

-65 ~ +150 °C

Electrical Characteristics (KA780 5E/KA7805ER)

(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

TJ =+25°C 4.8 5.0 5.2

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

O

5.0mA ≤ Io ≤ 1.0A, P V

= 7V to 20V

I

=+25°C

J

=+25°C

J

Q

TJ =+25°C-5.08.0mA

O

V

= 7V to 25V - 4.0 100

O

= 8V to 12V - 1.6 50

V

I

= 5.0mA to1.5A - 9 100

O

=250mA to 750mA - 4 50

I

O

IO = 5mA to 1.0A - 0.03 0.5

Q

/∆TIO= 5mA - -0.8 - mV/°C

O

N

= 7V to 25V - 0.3 1.3

V

I

f = 10Hz to 100kHz, TA=+25°C-42-µV/V f = 120Hz

= 8V to 18V

V

O

DropIO

O SC PK

= 1A, TJ =+25°C-2-V f = 1kHz - 15 - mΩ VI = 35V, TA =+25°C - 230 - mA TJ =+25°C-2.2-A

≤ 15W

KA7805E

Min. Typ. Max.

Unit

4.75 5.0 5.25 V

mV

mA

62 73 - dB

O

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

2

due to heatin g effe cts mus t be tak en

o

KA78XXE/KA78XXAE

Electrical Characteristics (KA780 6E/KA7806ER)

(Continued)

(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

KA7806E

Min. Typ. Max.

Unit

TJ =+25°C 5.75 6.0 6.25

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance(Note2) r Short Circuit Current I Peak Current (Note2) I

O

5.0mA ≤ I V

= 8.0V to 21V

I

=+25°C

J

=+25°C

J

Q

TJ =+25°C-5.08.0mA

≤ 1.0A, PO≤ 15W

O

V

= 8V to 25V - 5 120

I

= 9V to 13V - 1.5 60

V

I

=5mA to 1.5A - 9 120

O

=250mA to 750mA - 3 60

I

O

5.7 6.0 6.3 V

IO = 5mA to 1A - - 0.5

Q

/∆TIO = 5mA - -0.8 - mV/°C

O

N

DropIO

O

SC

PK

= 8V to 25V - - 1.3

V

I

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

V

= 9V to 19V

I

59 75 - dB

= 1A, TJ =+25°C-2-V f = 1kHz - 19 - mΩ VI = 35V, TA=+25°C - 250 - mA TJ =+25°C-2.2-A

mV

mA

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

due to heating eff e cts mus t be t aken

O

3

KA78XXE/KA78XXAE

Electrical Characteristics (KA780 8E/KA7808ER)

(Continued)

(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

KA7808E

Min. Typ. Max.

Unit

TJ =+25°C 7.7 8.0 8.3

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR f = 120Hz, V Dropout Voltage V Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

O

Q

5.0mA ≤ I V

= 10.5V to 23V

I

=+25°C

J

=+25°C

J

TJ =+25°C-5.08.0mA

≤ 1.0A, PO≤ 15W

O

V

= 10.5V to 25V - 5.0 160

I

= 11.5V to 17V - 2.0 80

V

I

= 5.0mA to 1.5A - 10 160

O

= 250mA to 750mA - 5.0 80

I

O

7.6 8.0 8.4 V

IO = 5mA to 1.0A - 0.05 0.5

Q

/∆TIO = 5mA - -0.8 - mV/°C

O

N

Drop

O SC PK

= 10.5A to 25V - 0.5 1.0

V

I

f = 10Hz to 100kHz, TA =+25°C-52-µV/Vo

= 11.5V to 21.5V 56 73 - dB

I

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

mV

mA

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

due to heating e ffe cts mus t be t aken

O

4

KA78XXE/KA78XXAE

Electrical Characteristics (KA780 9E/KA7809ER)

(Continued)

(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

KA7809E

Min. Typ. Max.

Unit

TJ =+25°C 8.65 9 9.35

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

O

5.0mA ≤ I V

= 11.5V to 24V

I

= +25°C

J

= +25°C

J

TJ = +25°C-5.08.0mA

Q

≤1.0A, PO ≤15W

O

V

= 11.5V to 25V - 6 180

I

= 12V to 17V - 2 90

V

I

= 5mA to 1.5A - 12 180

O

= 250mA to 750mA - 4 90

I

O

8.6 9 9.4 V

IO = 5mA to 1.0A - - 0.5

Q

/∆TIO = 5mA - -1 - mV/°C

O

N

DropIO

O SC PK

= 11.5V to 26V - - 1.3

V

I

f = 10Hz to 100kHz, TA = +25°C-58-µV/Vo f = 120Hz

V

= 13V to 23V

I

56 71 - dB

= 1A, TJ =+25°C-2-V f = 1kHz - 17 - mΩ VI = 35V, TA =+25°C - 250 - mA TJ = +25°C-2.2-A

mV

mA

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

due to heating eff e cts mus t be t aken

O

5

KA78XXE/KA78XXAE

Electrical Characteristics (KA781 2E/KA7812ER)

(Continued)

(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

KA7812E/KA7812ER

Min. Typ. Max.

Unit

TJ =+25°C 11.5 12 12.5

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

O

5.0mA ≤ I V

= 14.5V to 27V

I

=+25°C

J

=+25°C

J

TJ =+25°C-5.18.0mA

Q

≤1.0A, PO≤15W

O

V

= 14.5V to 30V - 10 240

I

= 16V to 22V - 3.0 120

V

I

= 5mA to 1.5A - 11 240

O

= 250mA to 750mA - 5.0 120

I

O

11.4 12 12.6 V

IO = 5mA to 1.0A - 0.1 0.5

Q

/∆TIO = 5mA - -1 - mV/°C

O

N

DropIO

O

SC

PK

= 14.5V to 30V - 0.5 1.0

V

I

f = 10Hz to 100kHz, TA =+25°C-76-µV/Vo f = 120Hz

V

= 15V to 25V

I

55 71 - dB

= 1A, TJ=+25°C-2-V f = 1kHz - 18 - mΩ VI = 35V, TA=+25°C - 230 - mA TJ = +25°C-2.2-A

mV

mA

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

due to heating e ffe cts mus t be t aken

O

6

KA78XXE/KA78XXAE

Electrical Characte ri sti cs (KA7815E)

(Continued)

(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

KA7815E

Min. Typ. Max.

Unit

TJ =+25°C 14.4 15 15.6

Output Voltage V

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

O

5.0mA ≤ I V

= 17.5V to 30V

I

=+25°C

J

=+25°C

J

Q

TJ =+25°C-5.28.0mA

≤1.0A, PO≤15W

O

V

= 17.5V to 30V - 11 300

I

= 20V to 26V - 3 150

V

I

= 5mA to 1.5A - 12 300

O

= 250mA to 750mA - 4 150

I

O

14.25 15 15.75 V

IO = 5mA to 1.0A - - 0.5

Q

/∆TIO = 5mA - -1 - mV/°C

O

N

DropIO

O SC PK

= 17.5V to 30V - - 1.0

V

I

f = 10Hz to 100kHz, TA = +25°C-90-µV/Vo f = 120Hz

V

= 18.5V to 28.5V

I

54 70 - dB

= 1A, TJ=+25°C-2-V f = 1kHz - 19 - mΩ VI = 35V, TA=+25°C - 250 - m A TJ =+25°C-2.2-A

mV

mA

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

due to heating eff e cts mus t be t aken

O

7

KA78XXE/KA78XXAE

Electrical Characte ri sti cs (KA7818E)

(Continued)

(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

KA7818E

Min. Typ. Max.

Unit

TJ =+25°C 17.3 18 18.7

Output Voltage V

O

Line Regulation (Note1) Regline T

Load Regulation (Note1) Regload T Quiescent Current I Quiescent Current Change ∆I Output Voltage Drift (Note2) ∆V

Output Noise Voltage V

Q

/∆TIO = 5mA - -1 - mV/°C

O

N

Ripple Rejection (Note2) RR Dropout Voltage V

Output Resistance (Note2) r Short Circuit Current I Peak Current (Note2) I

DropIO

O

SC

PK

5.0mA ≤ I V

= 21V to 33V

I

=+25°C

J

=+25°C

J

≤1.0A, PO ≤15W

O

V

= 21V to 33V - 15 360

I

= 24V to 30V - 5 180

V

I

= 5mA to 1.5A - 15 360

O

= 250mA to 750mA - 5.0 180

I

O

17.1 18 18.9

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

= 21V to 33V - - 1

V

I

f = 10Hz to 100kHz, TA =+25°C-110-µV/Vo f = 120Hz

V

= 22V to 32V

I

53 69 - dB

= 1A, TJ=+25°C - 2 - V f = 1kHz - 22 - mΩ VI = 35V, TA=+25°C - 250 - mA TJ =+25°C-2.2-A

V

mV

mA

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

due to heating e ffe cts mus t be t aken

O

8