Positive-Voltage Regulators

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

3-Terminal Regulators

Output Current up to 1.5 A

Internal Thermal-Overload Protection

High Power-Dissipation Capability

Internal Short-Circuit Current Limiting

Output Transistor Safe-Area Compensation

Direct Replacements for Fairchild

A7800

Series

description

This series of fixed-voltage monolithic

integrated-circuit voltage regulators is designed

for a wide range of applications. These

applications include on-card regulation for

elimination of noise and distribution problems

associated with single-point regulation. Each of

these regulators can deliver up to 1.5 A of output

current. The internal current-limiting and

thermal-shutdown features of these regulators

essentially make them immune to overload. In

addition to use as fixed-voltage regulators, these

devices can be used with external components to

obtain adjustable output voltages and currents,

and also can be used as the power-pass element

in precision regulators.

The

A7800C series is characterized for

operation over the virtual junction temperature

range of 0

C to 125

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1999, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

KC PACKAGE

(TOP VIEW)

The COMMON terminal is in electrical

contact with the mounting base.

TO-220AB

OUTPUT

COMMON

INPUT

KTE PACKAGE

(TOP VIEW)

The COMMON terminal is in

electrical contact with the mounting

base.

OUTPUT

COMMON

INPUT

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICES

CHIP

VO(NOM)

(V)

PLASTIC

FLANGE-MOUNT

(KC)

HEAT-SINK

MOUNTED

(KTE)

CHIP

FORM

(Y)

A7805CKC

A7805CKTE

A7805Y

A7806CKC

A7806CKTE

A7806Y

A7808CKC

A7808CKTE

A7808Y

8.5

A7885CKC

A7885CKTE

A7885Y

0°

C to 125

A7810CKC

A7810CKTE

A7810Y

A7812CKC

A7812CKTE

A7812Y

A7815CKC

A7815CKTE

A7815Y

A7818CKC

A7818CKTE

A7818Y

A7824CKC

A7824CKTE

A7824Y

The KTE package is only available taped and reeled. Add the suffix R to the device type

(e.g.,

A7805CKTER). Chip forms are tested at 25

schematic

INPUT

OUTPUT

COMMON

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

absolute maximum ratings over operating temperature ranges (unless otherwise noted)

†

A78xx

UNIT

Input voltage VI

A7824C

Input voltage, VI

All others

Virtual junction temperature range, TJ

0 to 150

Package thermal impedance

JA (see Notes 1 and 2)

KC package

Package thermal impedance,

JA (see Notes 1 and 2)

KTE package

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

Storage temperature range, Tstg

–65 to 150

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. Maximum power dissipation is a function of TJ(max),

JA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) – TA)/

JA. Operating at the absolute maximum TJ of 150

C can impact reliability. Due to

variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be

activated at power levels slightly above or below the rated dissipation.

2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace

length of zero.

recommended operating conditions

MIN

MAX

UNIT

A7805C

A7806C

A7808C

10.5

A7885C

10.5

Input voltage, VI

A7810C

12.5

A7812C

14.5

A7815C

17.5

A7818C

A7824C

Output current, IO

1.5

Operating virtual junction temperature, TJ

A7800C series

125

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, V

= 10 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7805C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 7 V to 20 V,

4.8

5.2

Output voltage

≤

15 W

C to 125

4.75

5.25

Input voltage regulation

VI = 7 V to 25 V

100

Input voltage regulation

VI = 8 V to 12 V

Ripple rejection

VI = 8 V to 18 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A

100

Output voltage regulation

IO = 250 mA to 750 mA

Output resistance

f = 1 kHz

C to 125

0.017

Ω

Temperature coefficient of output voltage

IO = 5 mA

C to 125

–1.1

mV/

Output noise voltage

f = 10 Hz to 100 kHz

Dropout voltage

IO = 1 A

Bias current

4.2

Bias current change

VI = 7 V to 25 V

C to 125

1.3

Bias current change

IO = 5 mA to 1 A

C to 125

0.5

Short-circuit output current

750

Peak output current

2.2

† Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into

account separately. All characteristics are measured with a 0.33-

F capacitor across the input and a 0.1-

F capacitor across the output.

electrical characteristics at specified virtual junction temperature, V

= 11 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7806C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 8 V to 21 V,

5.75

6.25

Output voltage

≤

15 W

C to 125

5.7

6.3

Input voltage regulation

VI = 8 V to 25 V

120

Input voltage regulation

VI = 9 V to 13 V

1.5

Ripple rejection

VI = 9 V to 19 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A

120

Output voltage regulation

IO = 250 mA to 750 mA

Output resistance

f = 1 kHz

C to 125

0.019

Ω

Temperature coefficient of output voltage

IO = 5 mA

C to 125

–0.8

mV/

Output noise voltage

f = 10 Hz to 100 kHz

Dropout voltage

IO = 1 A

Bias current

4.3

Bias current change

VI = 8 V to 25 V

C to 125

1.3

Bias current change

IO = 5 mA to 1 A

C to 125

0.5

Short-circuit output current

550

Peak output current

2.2

† Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into

account separately. All characteristics are measured with a 0.33-

F capacitor across the input and a 0.1-

F capacitor across the output.

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, V

= 14 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7808C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 10.5 V to 23 V,

7.7

8.3

Output voltage

≤

15 W

C to 125

7.6

8.4

Input voltage regulation

VI = 10.5 V to 25 V

160

Input voltage regulation

VI = 11 V to 17 V

Ripple rejection

VI = 11.5 V to 21.5 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A

160

Output voltage regulation

IO = 250 mA to 750 mA

Output resistance

f = 1 kHz

C to 125

0.016

Ω

Temperature coefficient of output voltage

IO = 5 mA

C to 125

–0.8

mV/

Output noise voltage

f = 10 Hz to 100 kHz

Dropout voltage

IO = 1 A

Bias current

4.3

Bias current change

VI = 10.5 V to 25 V

C to 125

Bias current change

IO = 5 mA to 1 A

C to 125

0.5

Short-circuit output current

450

Peak output current

2.2

† Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into

account separately. All characteristics are measured with a 0.33-

F capacitor across the input and a 0.1-

F capacitor across the output.

electrical characteristics at specified virtual junction temperature, V

= 15 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7885C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 11 V to 23.5 V,

8.15

8.5

8.85

Output voltage

≤

15 W

C to 125

8.1

8.9

Input voltage regulation

VI = 10.5 V to 25 V

170

Input voltage regulation

VI = 11 V to 17 V

Ripple rejection

VI = 11.5 V to 21.5 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A

170

Output voltage regulation

IO = 250 mA to 750 mA

Output resistance

f = 1 kHz

C to 125

0.016

Ω

Temperature coefficient of output voltage

IO = 5 mA

C to 125

–0.8

mV/

Output noise voltage

f = 10 Hz to 100 kHz

Dropout voltage

IO = 1 A

Bias current

4.3

Bias current change

VI = 10.5 V to 25 V

C to 125

Bias current change

IO = 5 mA to 1 A

C to 125

0.5

Short-circuit output current

450

Peak output current

2.2

† Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into

account separately. All characteristics are measured with a 0.33-

F capacitor across the input and a 0.1-

F capacitor across the output.

A7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, V

= 17 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7810C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 12.5 V to 25 V,

9.6

10.4

Output voltage

≤

15 W

C to 125

9.5

10.5

Input voltage regulation

VI = 12.5 V to 28 V

200

Input voltage regulation

VI = 14 V to 20 V

100

Ripple rejection

VI = 13 V to 23 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A

200

Output voltage regulation

IO = 250 mA to 750 mA

100

Output resistance

f = 1 kHz

C to 125

0.018

Temperature coefficient of output voltage

IO = 5 mA

C to 125

–1

mV/

Output noise voltage

f = 10 Hz to 100 kHz

Dropout voltage

IO = 1 A

Bias current

4.3

Bias current change

VI = 12.5 V to 28 V

C to 125

Bias current change

IO = 5 mA to 1 A

C to 125

0.5

Short-circuit output current

400

Peak output current

2.2

† Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into

account separately. All characteristics are measured with a 0.33-

F capacitor across the input and a 0.1-

F capacitor across the output.

electrical characteristics at specified virtual junction temperature, V

= 19 V, I

= 500 mA (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

T †

A7812C

UNIT

PARAMETER

TEST CONDITIONS

TJ†

MIN

TYP

MAX

UNIT

Output voltage

IO = 5 mA to 1 A,

VI = 14.5 V to 27 V,

11.5

12.5

Output voltage

≤

15 W

C to 125

11.4

12.6

Input voltage regulation

VI = 14.5 V to 30 V

240

Input voltage regulation

VI = 16 V to 22 V

120

Ripple rejection

VI = 15 V to 25 V,

f = 120 Hz

C to 125

Output voltage regulation

IO = 5 mA to 1.5 A