Datasheet UA7812CKTER, UA7812CKTE, UA7810QKTE, UA7812CKC, UA7810CKTER Datasheet (Texas Instruments)

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

3-Terminal Regulators

D

Output Current up to 1.5 A

D

Internal Thermal-Overload Protection

D

High Power-Dissipation Capability

D

Internal Short-Circuit Current Limiting

D

Output Transistor Safe-Area Compensation

D

Direct Replacements for Fairchild µA7800 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 µA7800C series is characterized for operation over the virtual junction temperature range of 0°C to 125°C.

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.

Copyright  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.

O

C

I

OUTPUT COMMON INPUT

O

C

I

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICES

T

J

V

O(NOM)

(V)

PLASTIC

FLANGE-MOUNT

(KC)

HEAT-SINK

MOUNTED

(KTE)

CHIP

FORM

(Y)

5 µA7805CKC µA7805CKTE µA7805Y 6 µA7806CKC µA7806CKTE µA7806Y 8 µA7808CKC µA7808CKTE µA7808Y

8.5 µA7885CKC µA7885CKTE µA7885Y

0°C to 125°C

10 µA7810CKC µA7810CKTE µA7810Y 12 µA7812CKC µA7812CKTE µA7812Y 15 µA7815CKC µA7815CKTE µA7815Y 18 µA7818CKC µA7818CKTE µA7818Y 24 µA7824CKC µA7824CKTE µA7824Y

The KTE package is only available taped and reeled. Add the suffix R to the device type (e.g., µA7805CKTER). Chip forms are tested at 25°C.

schematic

INPUT

OUTPUT

COMMON

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

†

µA78xx UNIT

p

µA7824C 40

Input voltage, V

I

All others 35

V

Virtual junction temperature range, T

J

0 to 150 °C

p

KC package 22

°

Package thermal impedance, θ

JA

(see Notes 1 and 2)

KTE package 23

°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C Storage temperature range, T

stg

–65 to 150 °C

†

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), θJA, and TA. The maximum allowable power dissipation at any allowable

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

µA7805C 7 25 µA7806C 8 25 µA7808C 10.5 25 µA7885C 10.5 25

Input voltage, V

I

µA7810C 12.5 28

V

µA7812C 14.5 30 µA7815C 17.5 30 µA7818C 21 33 µA7824C 27 38

Output current, I

O

1.5 A

Operating virtual junction temperature, T

J

µA7800C series 0 125 °C

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 10 V, IO = 500 mA (unless otherwise noted)

µA7805C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 7 V to 20 V,

25°C 4.8 5 5.2

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 4.75 5.25

V

p

VI = 7 V to 25 V

°

3 100

Input voltage regulation

VI = 8 V to 12 V

25°C

1 50

mV

Ripple rejection VI = 8 V to 18 V, f = 120 Hz 0°C to 125°C 62 78 dB

p

IO = 5 mA to 1.5 A

°

15 100

Output voltage regulation

IO = 250 mA to 750 mA

25°C

5 50

mV

Output resistance f = 1 kHz 0°C to 125°C 0.017 Ω Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1.1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 40 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.2 8 mA

VI = 7 V to 25 V

1.3

Bias current change

IO = 5 mA to 1 A

0°C

to

125°C

0.5

mA

Short-circuit output current 25°C 750 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 11 V, IO = 500 mA (unless otherwise noted)

µA7806C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 8 V to 21 V,

25°C 5.75 6 6.25

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 5.7 6.3

V

p

VI = 8 V to 25 V

°

5 120

Input voltage regulation

VI = 9 V to 13 V

25°C

1.5 60

mV

Ripple rejection VI = 9 V to 19 V, f = 120 Hz 0°C to 125°C 59 75 dB

p

IO = 5 mA to 1.5 A

°

14 120

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 60

mV

Output resistance f = 1 kHz 0°C to 125°C 0.019 Ω Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 45 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.3 8 mA

VI = 8 V to 25 V

°

1.3

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 550 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 14 V, IO = 500 mA (unless otherwise noted)

µA7808C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 10.5 V to 23 V,

25°C 7.7 8 8.3

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 7.6 8.4

V

p

VI = 10.5 V to 25 V

°

6 160

Input voltage regulation

VI = 11 V to 17 V

25°C

2 80

mV

Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 0°C to 125°C 55 72 dB

p

IO = 5 mA to 1.5 A

°

12 160

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 80

mV

Output resistance f = 1 kHz 0°C to 125°C 0.016 Ω Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 52 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.3 8 mA

VI = 10.5 V to 25 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 450 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 15 V, IO = 500 mA (unless otherwise noted)

µA7885C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 11 V to 23.5 V,

25°C 8.15 8.5 8.85

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 8.1 8.9

V

p

VI = 10.5 V to 25 V

°

6 170

Input voltage regulation

VI = 11 V to 17 V

25°C

2 85

mV

Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 0°C to 125°C 54 70 dB

p

IO = 5 mA to 1.5 A

°

12 170

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 85

mV

Output resistance f = 1 kHz 0°C to 125°C 0.016 Ω Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 55 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.3 8 mA

VI = 10.5 V to 25 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 450 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 17 V, IO = 500 mA (unless otherwise noted)

µA7810C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 12.5 V to 25 V,

25°C 9.6 10 10.4

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 9.5 10 10.5

V

p

VI = 12.5 V to 28 V

°

7 200

Input voltage regulation

VI = 14 V to 20 V

25°C

2 100

mV

Ripple rejection VI = 13 V to 23 V, f = 120 Hz 0°C to 125°C 55 71 dB

p

IO = 5 mA to 1.5 A

°

12 200

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 100

mV

Output resistance f = 1 kHz 0°C to 125°C 0.018 W Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 70 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.3 8 mA

VI = 12.5 V to 28 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 400 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 19 V, IO = 500 mA (unless otherwise noted)

µA7812C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 14.5 V to 27 V,

25°C 11.5 12 12.5

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 11.4 12.6

V

p

VI = 14.5 V to 30 V

°

10 240

Input voltage regulation

VI = 16 V to 22 V

25°C

3 120

mV

Ripple rejection VI = 15 V to 25 V, f = 120 Hz 0°C to 125°C 55 71 dB

p

IO = 5 mA to 1.5 A

°

12 240

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 120

mV

Output resistance f = 1 kHz 0°C to 125°C 0.018 W Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 75 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.3 8 mA

VI = 14.5 V to 30 V

1

Bias current change

IO = 5 mA to 1 A

0°C

to

125°C

0.5

mA

Short-circuit output current 25°C 350 mA Peak output current 25°C 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 23 V, IO = 500 mA (unless otherwise noted)

µA7815C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 17.5 V to 30 V,

25°C 14.4 15 15.6

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 14.25 15.75

V

p

VI = 17.5 V to 30 V

°

11 300

Input voltage regulation

VI = 20 V to 26 V

25°C

3 150

mV

Ripple rejection VI = 18.5 V to 28.5 V , f = 120 Hz 0°C to 125°C 54 70 dB

p

IO = 5 mA to 1.5 A

°

12 300

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 150

mV

Output resistance f = 1 kHz 0°C to 125°C 0.019 W Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 90 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.4 8 mA

VI = 17.5 V to 30 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 230 mA Peak output current 25°C 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 27 V, IO = 500 mA (unless otherwise noted)

µA7818C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 21 V to 33 V,

25°C 17.3 18 18.7

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 17.1 18.9

V

p

VI = 21 V to 33 V

°

15 360

Input voltage regulation

VI = 24 V to 30 V

25°C

5 180

mV

Ripple rejection VI = 22 V to 32 V, f = 120 Hz 0°C to 125°C 53 69 dB

p

IO = 5 mA to 1.5 A

°

12 360

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 180

mV

Output resistance f = 1 kHz 0°C to 125°C 0.022 W Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 110 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.5 8 mA

VI = 21 V to 33 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 200 mA Peak output current 25°C 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless otherwise noted)

µA7824C

PARAMETER

TEST CONDITIONS

T

J

†

MIN TYP MAX

UNIT

p

I

= 5 mA to 1 A, V

= 27 V to 38 V,

25°C 23 24 25

Output voltage

O

,

PD ≤ 15 W

I

,

0°C to 125°C 22.8 25.2

V

p

VI = 27 V to 38 V

°

18 480

Input voltage regulation

VI = 30 V to 36 V

25°C

6 240

mV

Ripple rejection VI = 28 V to 38 V, f = 120 Hz 0°C to 125°C 50 66 dB

p

IO = 5 mA to 1.5 A

°

12 480

Output voltage regulation

IO = 250 mA to 750 mA

25°C

4 240

mV

Output resistance f = 1 kHz 0°C to 125°C 0.028 W Temperature coefficient of output voltage IO = 5 mA 0°C to 125°C –1.5 mV/°C Output noise voltage f = 10 Hz to 100 kHz 25°C 170 µV Dropout voltage IO = 1 A 25°C 2 V Bias current 25°C 4.6 8 mA

VI = 27 V to 38 V

°

1

Bias current change

IO = 5 mA to 1 A

0°C to 125°C

0.5

mA

Short-circuit output current 25°C 150 mA Peak output current 25°C 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 10 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7805Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 5 V

p

VI = 7 V to 25 V 3

Input voltage regulation

VI = 8 V to 12 V 1

mV

Ripple rejection VI = 8 V to 18 V, f = 120 Hz 78 dB

p

IO = 5 mA to 1.5 A 15

Output voltage regulation

IO = 250 mA to 750 mA 5

mV

Output resistance f = 1 kHz 0.017 W Temperature coefficient of output voltage IO = 5 mA –1.1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 40 µV Dropout voltage IO = 1 A 2 V Bias current 4.2 mA Short-circuit output current 750 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 11 V, IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7806Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 6 V

p

VI = 8 V to 25 V 5

Input voltage regulation

VI = 9 V to 13 V 1.5

mV

Ripple rejection VI = 9 V to 19 V, f = 120 Hz 75 dB

p

IO = 5 mA to 1.5 A 14

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.019 W Temperature coefficient of output voltage IO = 5 mA –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 45 µV Dropout voltage IO = 1 A 2 V Bias current 4.3 mA Short-circuit output current 550 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 14 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7808Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 8 V

p

VI = 10.5 V to 25 V 6

Input voltage regulation

VI = 11 V to 17 V 2

mV

Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 72 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.016 W Temperature coefficient of output voltage IO = 5 mA –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 52 µV Dropout voltage IO = 1 A 2 V Bias current 4.3 mA Short-circuit output current 450 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 15 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7885Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 8.5 V

p

VI = 10.5 V to 25 V 6

Input voltage regulation

VI = 11 V to 17 V 2

mV

Ripple rejection VI = 11.5 V to 21.5 V, f = 120 Hz 70 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.016 W Temperature coefficient of output voltage IO = 5 mA –0.8 mV/°C Output noise voltage f = 10 Hz to 100 kHz 55 µV Dropout voltage IO = 1 A 2 V Bias current 4.3 mA Short-circuit output current 450 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 17 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7810Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 10 V

p

VI = 12.5 V to 28 V 7

Input voltage regulation

VI = 14 V to 20 V 2

mV

Ripple rejection VI = 13 V to 23 V, f = 120 Hz 71 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.018 W Temperature coefficient of output voltage IO = 5 mA –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 70 µV Dropout voltage IO = 1 A 2 V Bias current 4.3 mA Short-circuit output current 400 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

11

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 19 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7812Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 12 V

p

VI = 14.5 V to 30 V 10

Input voltage regulation

VI = 16 V to 22 V 3

mV

Ripple rejection VI = 15 V to 25 V, f = 120 Hz 71 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.018 W Temperature coefficient of output voltage IO = 5 mA –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 75 µV Dropout voltage IO = 1 A 2 V Bias current 4.3 mA Short-circuit output current 350 mA Peak output current 2.2 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 23 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7815Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 15 V

p

VI = 17.5 V to 30 V 11

Input voltage regulation

VI = 20 V to 26 V 3

mV

Ripple rejection VI = 18.5 V to 28.5 V , f = 120 Hz 70 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.019 W Temperature coefficient of output voltage IO = 5 mA –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 90 µV Dropout voltage IO = 1 A 2 V Bias current 4.4 mA Short-circuit output current 230 mA Peak output current 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

12

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 27 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7818Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 18 V

p

VI = 21 V to 33 V 15

Input voltage regulation

VI = 24 V to 30 V 5

mV

Ripple rejection VI = 22 V to 32 V, f = 120 Hz 69 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.022 W Temperature coefficient of output voltage IO = 5 mA –1 mV/°C Output noise voltage f = 10 Hz to 100 kHz 110 µV Dropout voltage IO = 1 A 2 V Bias current 4.5 mA Short-circuit output current 200 mA Peak output current 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

electrical characteristics at specified virtual junction temperature, VI = 33 V , IO = 500 mA, TJ = 25°C (unless otherwise noted)

†

µA7824Y

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

Output voltage 24 V

p

VI = 27 V to 38 V 18

Input voltage regulation

VI = 30 V to 36 V 6

mV

Ripple rejection VI = 28 V to 38 V, f = 120 Hz 66 dB

p

IO = 5 mA to 1.5 A 12

Output voltage regulation

IO = 250 mA to 750 mA 4

mV

Output resistance f = 1 kHz 0.028 W Temperature coefficient of output voltage IO = 5 mA –1.5 mV/°C Output noise voltage f = 10 Hz to 100 kHz 170 µV Dropout voltage IO = 1 A 2 V Bias current 4.6 mA Short-circuit output current 150 mA Peak output current 2.1 A

†

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-µF capacitor across the input and a 0.1-µF capacitor across the output.

µA7800 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

13

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION INFORMATION

+V

O

+V

0.1 µF0.33 µF

µA78xx

Figure 1. Fixed-Output Regulator

OUTIN

G

–V

O

COM

+

–

V

I

L

µA78xx

Figure 2. Positive Regulator in Negative Configuration (VI Must Float)

R1

0.33 µF

Input Output

µA78xx

0.1 µF

I

O

R2

V

O

+

Vxx)

ǒ

V

xx

R1

)

I

Q

Ǔ

R2

NOTE A: The following formula is used when Vxx is the nominal output voltage (output to common) of the fixed regulator:

Figure 3. Adjustable-Output Regulator

V

O(Reg)

R1

Input

I

O

IO = (VO/R1) + IO Bias Current

0.33 µF

µA78xx

Output

Figure 4. Current Regulator

µA7800 SERIES POSITIVE-VOLTAGE REGULATORS

SLVS056E – MAY 1976 – REVISED JULY 1999

14

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

APPLICATION INFORMATION

µA7815C

0.1 µF

1N4001

0.1 µF

1N4001

0.33 µF

2 µF

1N4001

VO = 15 V

VO = –15 V

20-V Input

–20-V Input

µA7915C

1 µF

Figure 5. Regulated Dual Supply

operation with a load common to a voltage of opposite polarity

In many cases, a regulator powers a load that is not connected to ground but, instead, is connected to a voltage source of opposite polarity (e.g., operational amplifiers, level-shifting circuits, etc.). In these cases, a clamp diode should be connected to the regulator output as shown in Figure 6. This protects the regulator from output polarity reversals during startup and short-circuit operation.

µA78xx

+V

O

+V

I

–V

O

1N4001 or Equivalent

Figure 6. Output Polarity-Reversal-Protection Circuit

reverse-bias protection

Occasionally , the input voltage to the regulator can collapse faster than the output voltage. This can occur, for example, when the input supply is crowbarred during an output overvoltage condition. If the output voltage is greater than approximately 7 V , the emitter-base junction of the series-pass element (internal or external) could break down and be damaged. To prevent this, a diode shunt can be used as shown in Figure 7.

µA78xx

+V

O

V

I

Figure 7. Reverse-Bias-Protection Circuit

IMPORTANT NOTICE

T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.

CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICA TIONS IS UNDERSTOOD T O BE FULLY AT THE CUSTOMER’S RISK.

In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.