LM7805CT. - FAIRCHILD SEMICONDUCTOR

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1

September 2014

LM78XX / LM78XXA

3-Terminal 1 A Positive Voltage Regulator

Features

• Output Current up to 1 A

• Output Voltages: 5, 6, 8, 9, 10, 12, 15, 18, 24 V

• Thermal Overload Protection

• Short-Circuit Protection

• Output Transistor Safe Operating Area Protection

Ordering Information(1)

Note:

1. Above output voltage tolerance is available at 25°C.

Product Number Output Voltage

Tolerance Package Operating

Temperature Packing Method

LM7805CT

±4%

TO-220

(Single G auge)

-40°C to +125°C

Rail

LM7806CT

LM7808CT

LM7809CT

LM7810CT

LM7812CT

LM7815CT

LM7818CT

LM7824CT

LM7805ACT

±2% 0°C to +125°C

LM7809ACT

LM7810ACT

LM7812ACT

LM7815ACT

Description

The LM78XX series of three-terminal positive regulators

is available in the TO-220 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. If

adequate heat sinking is provided, they can deliver over

1 A output current. Although designed primarily as fixed-

voltage regulators, these devices can be used with exter-

nal components for adjustable voltages and currents.

1. Input

2. GND

3. Output

GND

TO-220 (Single Gauge)

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 2

Block Diagram

Figure 1. Block Diagram

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-

ble above the re co mmen ded operating cond iti ons an d s tres sing the parts to these levels i s n ot re co mme nde d. In addi-

tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The

absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless other wise noted.

Symbol Parameter Value Unit

VIInput Voltage VO = 5 V to 18 V 35 V

VO = 24 V 40

RθJC Thermal Resistance, Junction-Case (TO-220) 5 °C/W

RθJA Thermal Resistance, Junction-Air (TO-220) 65 °C/W

TOPR Operati ng Tempe ratu re Rang e LM78xx -40 to +125 °C

LM78xxA 0 to +125

TSTG Storage Temperature Range - 65 to +150 °C

Starting

Circuit

Input

Reference

Voltage

Current

Generator

SOA

Protection

Thermal

Protection

Series Pass

Element

Error

Amplifier

Output

GND

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 3

Electrical Characteristics (LM7805)

Refer to the test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 10 V, CI = 0.1 μF, unless otherwise specified.

Notes:

2. 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.

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 4.805.005.20 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 7 V to 20 V 4.75 5.00 5.25

Regline Line Regulation(2) TJ = +25°CVI = 7 V to 25 V 4.0 100.0 mV

VI = 8 V to 12 V 1.6 50.0

Regload Load Regulation(2) TJ = +25°CIO = 5 mA to 1.5 A 9.0 100.0 mV

IO = 250 mA to 750 mA 4.0 50.0

IQQuiescent Current TJ = +25°C58mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.03 0.50 mA

VI = 7 V to 25 V 0.30 1.30

ΔVO/ΔT Output Voltage Dr ift(3) IO = 5 mA -0.8 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C42μV

RR Ripple Rejection(3) f = 120 Hz, VI = 8 V to 18 V 62 73 dB

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

ROOutput Resistance(3) f = 1 kHz 15 mΩ

ISC Short-Circ uit Current TJ = +25°C, VI = 35 V 230 mA

IPK Peak Current(3) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 4

Electrical Characteristics (LM7806)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 11 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

4. 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.

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 5.756.006.25 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 8.0 V to 21 V 5.70 6.00 6.30

Regline Line Regulation(4) TJ = +25°CVI = 8 V to 25 V 5.0 120.0 mV

VI = 9 V to 13 V 1.5 60.0

Regload Load Regulation(4) TJ = +25°C IO = 5 mA to 1.5 A 9.0 120.0 mV

IO = 250 mA to 750 mA 3.0 60.0

IQQuiescent Current TJ = +25°C58mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.5 mA

VI = 8 V to 25 V 1.3

ΔVO/ΔT Output Voltage Dr ift(5) IO = 5 mA -0.8 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C45μV

RR Ripple Rejection(5) f = 120 Hz, VI = 8 V to 18 V 62 73 dB

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

ROOutput Resistance(5) f = 1 kHz 19 mΩ

ISC Short-Circ uit Current TJ = +25°C, VI = 35 V 250 mA

IPK Peak Current(5) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 5

Electrical Characteristics (LM7808)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 14 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

6. 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.

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

Symbol Parameter Conditions Min. Typ. Max. Unit

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

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 10.5 V to 23 V 7.6 8.0 8.4

Regline Line Regulation(6) TJ = +25°CVI = 10.5 V to 25 V 5 160 mV

VI = 11.5 V to 17 V 2 80

Regload Load Regulation(6) TJ = +25°C IO = 5 mA to 1.5 A 10 160 mV

IO = 250 mA to 750 mA 5 80

IQQuiescent Current TJ = +25°C58mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.05 0.50 mA

VI = 10.5 V to 25 V 0.5 1 .0

ΔVO/ΔT Output Voltage Dr ift(7) IO = 5 mA -0.8 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C52μV

RR Ripple Rejection(7) f = 120 Hz, VI = 11.5 V to 21.5 V 56 73 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(7) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C230mA

IPK Peak Current(7) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 6

Electrical Characteristics (LM7809)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 15 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

8. 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.

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 8.659.009.35 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 11.5 V to 24 V 8.60 9.00 9.40

Regline Line Regulation(8) TJ = +25°CVI = 11.5 V to 25 V 6 180 mV

VI = 12 V to 17 V 2 90

Regload Load Regulation(8) TJ = +25°C IO = 5 mA to 1.5 A 12 180 mV

IO = 250 mA to 750 mA 4 90

IQQuiescent Current TJ = +25°C58mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.5 mA

VI = 11.5 V to 26 V 1.3

ΔVO/ΔT Output Voltage Dr ift(9) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV

RR Ripple Rejection(9) f = 120 Hz, VI = 13 V to 23 V 56 71 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(9) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(9) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 7

Electrical Characteristics (LM7810)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 16 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

10. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

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

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 12.5 V to 25 V 9.5 10.0 10.5

Regline Line Regulation(10) TJ = +25°CVI = 12.5 V to 25 V 10 200 mV

VI = 13 V to 25 V 3 100

Regload Load Regulation(10) TJ = +25°C IO = 5 mA to 1.5 A 12 200 mV

IO = 250 mA to 750 mA 4 400

IQQuiescent Current TJ = +25°C5.18.0mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.5 mA

VI = 12.5 V to 29 V 1.0

ΔVO/ΔT Output Voltage Dr ift(11) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV

RR Ripple Rejection(11) f = 120 Hz, VI = 13 V to 23 V 56 71 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(11) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(11) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 8

Electrical Characteristics (LM7812)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 19 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

12. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 11.5 12.0 12.5 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 14.5 V to 27 V 11.4 12.0 12.6

Regline Line Regulation(12) TJ = +25°CVI = 14.5 V to 30 V 10 240 mV

VI = 16 V to 22 V 3 120

Regload Load Regulation(12) TJ = +25°C IO = 5 mA to 1.5 A 11 240 mV

IO = 250 mA to 750 mA 5 120

IQQuiescent Current TJ = +25°C5.18.0mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.1 0.5 mA

VI = 14.5 V to 30 V 0.5 1.0

ΔVO/ΔT Output Voltage Dr ift(13) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C76μV

RR Ripple Rejection(13) f = 120 Hz, VI = 15 V to 25 V 55 71 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(13) f = 1 kHz 18 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C230mA

IPK Peak Current(13) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 9

Electrical Characteristics (LM7815)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 23 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

14. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 14.40 15.00 15.60 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 17.5 V to 30 V 14.25 15.00 15.75

Regline Line Regulation(14) TJ = +25°CVI = 17.5 V to 30 V 11 300 mV

VI = 20 V to 26 V 3 150

Regload Load Regulation(14) TJ = +25°C IO = 5 mA to 1.5 A 12 300 mV

IO = 250 mA to 750 mA 4 150

IQQuiescent Current TJ = +25°C5.28.0mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.5 mA

VI = 17.5 V to 30 V 1.0

ΔVO/ΔT Output Voltage Dr ift(15) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C90μV

RR Ripple Rejection(15) f = 120 Hz, VI = 18.5 V to 28.5 V 54 70 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(15) f = 1 kHz 19 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(15) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 10

Electrical Characteristics (LM7818)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 27 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

16. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 17.3 18.0 18.7 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 21 V to 33 V 17.1 18.0 18.9

Regline Line Regulation(16) TJ = +25°CVI = 21 V to 33 V 15 360 mV

VI = 24 V to 30 V 5 180

Regload Load Regulation(16) TJ = +25°C IO = 5 mA to 1.5 A 15 360 mV

IO = 250 mA to 750 mA 5 180

IQQuiescent Current TJ = +25°C5.28.0mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.5 mA

VI = 21 V to 33 V 1.0

ΔVO/ΔT Output Voltage Dr ift(17) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C110μV

RR Ripple Rejection(17) f = 120 Hz, VI = 22 V to 32 V 53 69 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(17) f = 1 kHz 22 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(17) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 11

Electrical Characteristics (LM7824)

Refer to the test circuit, -40°C < T J < 125°C, IO = 500 mA, V I = 33 V, CI = 0.3 3 μF, CO = 0.1 μF, unless otherwise spec-

ified.

Notes:

18. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 23.00 24.00 25.00 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 27 V to 38 V 22.80 24.00 25.25

Regline Line Regulation(18) TJ = +25°CVI = 27 V to 38 V 17 480 mV

VI = 30 V to 36 V 6 240

Regload Load Regulation(18) TJ = +25°C IO = 5 mA to 1.5 A 15 480 mV

IO = 250 mA to 750 mA 5 240

IQQuiescent Current TJ = +25°C5.28.0mA

ΔIQQuiescent Current

Change IO = 5 mA to 1 A 0.1 0.5 mA

VI = 27 V to 38 V 0.5 1.0

ΔVO/ΔT Output Voltage Dr ift(19) IO = 5 mA -1.5 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C120μV

RR Ripple Rejection(19) f = 120 Hz, VI = 28 V to 38 V 50 67 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(19) f = 1 kHz 28 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C230mA

IPK Peak Current(19) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 12

Electrical Characteristics (LM7805A)

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

Notes:

20. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 4.9 5.0 5.1 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 7.5 V to 20 V 4.8 5.0 5.2

Regline Line Regulation(20)

VI = 7.5 V to 25 V, IO = 500 mA 5.0 50.0

VI = 8 V to 12 V 3.0 50.0

TJ = +25°CVI = 7.3 V to 20 V 5.0 50.0

VI = 8 V to 12 V 1.5 25.0

Regload Load Regulation(20) TJ = +25°C, IO = 5 mA to 1.5 A 9 100 mVIO = 5 mA to 1 A 9 100

IO = 250 mA to 750 mA 4 50

IQQuiescent Current TJ = +25°C56mA

ΔIQQuiescent Current

Change

IO = 5 mA to 1 A 0.5 mAVI = 8 V to 25 V, IO = 500 mA 0.8

VI = 7.5 V to 20 V, TJ = +25°C0.8

ΔVO/ΔT Output Voltage Dr ift(21) IO = 5 mA -0.8 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C42μV

RR Ripple Rejection(21) f = 120 Hz, VO = 500 mA,

VI =8 V to 18 V 68 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(21) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(21) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 13

Electrical Characteristics (LM7809A)

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

Notes:

22. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 8.829.009.16 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 11.2 V to 24 V 8.65 9.00 9.35

Regline Line Regulation(22)

VI = 11.7 V to 25 V, IO = 50 0 mA 6 90

VI = 12.5 V to 19 V 4 45

TJ = +25°CVI = 11.5 V to 24 V 6 90

VI = 12.5 V to 19 V 2 45

Regload Load Regulation(22) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1 A 12 100

IO = 250 mA to 750 mA 5 50

IQQuiescent Current TJ = +25°C56mA

ΔIQQuiescent Current

Change

IO = 5 mA to 1 A 0.5 mAVI = 12 V to 25 V, IO = 500 mA 0.8

VI = 11.7 V to 25 V, TJ = +25°C0.8

ΔVO/ΔT Output Voltage Dr ift(23) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV

RR Ripple Rejection(23) f = 120 Hz, VO = 500 mA,

VI =12 V to 22 V 62 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(23) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(23) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 14

Electrical Characteristics (LM7810A)

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

Notes:

24. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

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

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 12.8 V to 25 V 9.6 10.0 10.4

Regline Line Regulation(24)

VI = 12.8 V to 26 V, IO = 50 0 mA 8 100

VI = 13 V to 20 V 4 50

TJ = +25°CVI = 12.5 V to 25 V 8 100

VI = 13 V to 20 V 3 50

Regload Load Regulation(24) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1 A 12 100

IO = 250 mA to 750 mA 5 50

IQQuiescent Current TJ = +25°C56mA

ΔIQQuiescent Current

Change

IO = 5 mA to 1 A 0.5 mAVI = 12.8 V to 25 V, IO = 500 mA 0.8

VI = 13 V to 26 V, TJ = +25°C0.5

ΔVO/ΔT Output Voltage Dr ift(25) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C58μV

RR Ripple Rejection(25) f = 120 Hz, VO = 500 mA,

VI =14 V to 24 V 62 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(25) f = 1 kHz 17 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(25) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 15

Electrical Characteristics (LM7812A)

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

Notes:

26. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 11.75 12.00 12.25 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 14.8 V to 27 V 11.50 12.00 12.50

Regline Line Regulation(26)

VI = 14.8 V to 30 V, IO = 50 0 mA 10 120

VI = 16 V to 22 V 4 120

TJ = +25°CVI = 14.5 V to 27 V 10 120

VI = 16 V to 22 V 3 60

Regload Load Regulation(26) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1 A 12 100

IO = 250 mA to 750 mA 5 50

IQQuiescent Current TJ = +25°C56mA

ΔIQQuiescent Current

Change

IO = 5 mA to 1 A 0.5 mAVI = 14 V to 27 V, IO = 500 mA 0.8

VI = 15 V to 30 V, TJ = +25°C0.8

ΔVO/ΔT Output Voltage Dr ift(27) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C76μV

RR Ripple Rejection(27) f = 120 Hz, VO = 500 mA,

VI =14 V to 24 V 60 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(27) f = 1 kHz 18 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(27) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 16

Electrical Characteristics (LM7815A)

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

Notes:

28. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st

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

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

Symbol Parameter Conditions Min. Typ. Max. Unit

VOOutput Voltage TJ = +25°C 14.75 15.00 15.30 V

IO = 5 mA to 1 A, PO ≤ 15 W,

VI = 17.7 V to 30 V 14.40 15.00 15.60

Regline Line Regulation(28)

VI = 17.4 V to 30 V, IO = 50 0 mA 10 150

VI = 20 V to 26 V 5 150

TJ = +25°CVI = 17.5 V to 30 V 11 150

VI = 20 V to 26 V 3 75

Regload Load Regulation(28) TJ = +25°C, IO = 5 mA to 1.5 A 12 100 mVIO = 5 mA to 1 A 12 100

IO = 250 mA to 750 mA 5 50

IQQuiescent Current TJ = +25°C5.26.0mA

ΔIQQuiescent Current

Change

IO = 5 mA to 1 A 0.5 mAVI = 17.5 V to 30 V, IO = 500 mA 0.8

VI = 17.5 V to 30 V, TJ = +25°C0.8

ΔVO/ΔT Output Voltage Dr ift(29) IO = 5 mA -1 mV/°C

VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C90μV

RR Ripple Rejection(29) f = 120 Hz, VO = 500 mA,

VI =18.5 V to 28.5 V 58 dB

VDROP Dropout Voltage IO = 1 A, TJ = +25°C2V

ROOutput Resistance(29) f = 1 kHz 19 mΩ

ISC Short-Circ uit Current VI = 35 V, TJ = +25°C250mA

IPK Peak Current(29) TJ = +25°C2.2A

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 17

Typical Performance Characteristics

Figure 2. Quiescent Current Figure 3. Peak Output Current

Figure 4. Output Voltage Figure 5. Quiescent Current

5.75

5.5

5.25

4.75

4.5

VI = 10V

VO = 5V

IO = 5mA

-25-50 0 25 50 75 100 125

QUIESCENT CURRENT (mA)

JUNCTION TEMPERATURE (°C)

2.5

1.5

TJ = 25°C

ΔVO = 100mV

5 101520253035

OUTPUT CURRENT (A)

INPUT-OUTPUT DIFFERENTIAL (V)

1.02

1.01

0.99

0.98

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)

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 18

Typical Applications

Figure 6. DC Parameters

Figure 7. Load Regulation

Figure 8. Ripple Rejection

0.1μF

CI0.33μF

Output

Input

LM78XX

0.33μF

270pF

100Ω30μS

2N6121

or EQ

Output

Input

LM78XX

Output

Input

5.1Ω

0.33μF 2

470μF

120Hz +

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 19

Typical Applications (Continued)

Figure 9. Fixed-Output Regulator

Figure 10. Constant Current Regulator

Notes:

29. To specify an output voltag e, substitute volta ge value for “XX”. A common ground is requ ired between the inp ut and

the output voltage. The input volt age mu st remain typi cally 2.0 V above t he output volt age even durin g the low point

on the input ripple voltage.

30. CI is required if regulator is located an appreciable distance from power supply filter.

31. CO improves stability and transient response.

Figure 11. Circuit for Increasing Output Voltage

0.1μF

CI0.33μF

Output

Input

LM78XX

0.1μF

CI0.33μF

Output

Input

LM78XX

2VXX

IO = R1 +IQ

VXX

0.1μF

CI0.33μF

Output

Input

LM78XX

2VXX R1

IRI ≥ 5 IQ

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

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 20

Typical Applications (Continued)

Figure 12. Adjustable Output Regulator (7 V to 30 V)

Figure 13. High-Current Voltage Regulator

Figure 14. High Output Current with Short-Circuit Protection

LM741

0.33μF

Input Output

0.1μF

LM7805

10kΩ

IRI ≥ 5 IQ

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

LM78XX

Output

Input

3Ω

0.33μF

IREG

0.1μF

IQ1

IO = IREG + BQ1 (IREG–VBEQ1/R1)

Q1 BD536

R1 = VBEQ1

IREG–IQ1 BQ1

LM78XX

Output

0.1μF

0.33μF

3Ω

Input

Q1 = TIP42

Q2 = TIP42

RSC = I

VBEQ2

RSC

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 21

Typical Applications (Continued)

Figure 15. Tracking Voltage Regulator

Figure 16. Split Power Supply (±15 V - 1 A)

LM78XX

LM741

0.1μF

0.33μF

434.7kΩ

4.7kΩ

TIP42

COMMON

-VO

-VIN

0.33μF 0.1μF

2.2μF

1μF +

1N4001

+15V

-15V

+20V

-20V

LM7815

MC7915

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 22

Typical Applications (Continued)

Figure 17. Negative Output Voltage Circuit

Figure 18. Switching Regulator

LM78XX

Output

Input

0.1μF

LM78XX

1mH

2000μF

Output

Input D45H11

0.33μF

470Ω

4.7Ω

10μF

0.5Ω

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator

LM78XX / LM78XXA Rev . 1.3.1 23

Physical Dimensions

Figure 19. TO-220, MOLDED, 3-LEAD, JEDEC VARIATION AB (ACTIVE)

TRADEMARKS

The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not

intended to be an exhaustive list of all such trademarks.

AccuPower¥

Awinda

AX-CAP

BitSiC¥

Build it Now¥

CorePLUS¥

CorePOWER¥

CROSSVOLT¥

CTL¥

Current Transfer Logic¥

DEUXPEED

Dual Cool™

EcoSPARK

EfficientMax¥

ESBC¥

Fairchild

Fairchild Semiconductor

FACT Quiet Series¥

FACT

FAST

FastvCore¥

FETBench¥

FPS¥

F-PFS¥

FRFET

Global Power Resource

GreenBridge¥

Green FPS¥

Green FPS¥ e-Series¥

Gmax¥

GTO¥

IntelliMAX¥

ISOPLANAR¥

Making Small Speakers Sound Louder

and Better™

MegaBuck¥

MICROCOUPLER¥

MicroFET¥

MicroPak¥

MicroPak2¥

MillerDrive¥

MotionMax¥

MotionGrid

MTi

MTx

MVN

mWSaver

OptoHiT¥

PowerTrench

PowerXS™

Programmable Active Droop¥

QFET

QS¥

Quiet Series¥

RapidConfigure¥

Saving our world, 1mW/W/kW at a time™

SignalWise¥

SmartMax¥

SMART START¥

Solutions for Your Success¥

SPM

STEALTH¥

SuperFET

SuperSOT¥-3

SuperSOT¥-6

SuperSOT¥-8

SupreMOS

SyncFET¥

Sync-Lock™

®*

TinyBoost

TinyBuck

TinyCalc¥

TinyLogic

TINYOPTO¥

TinyPower¥

TinyPWM¥

TinyWire¥

TranSiC¥

TriFault Detect¥

TRUECURRENT

μSerDes¥

UHC

Ultra FRFET¥

UniFET¥

VCX¥

VisualMax¥

VoltagePlus¥

XS™

Xsens™

௝❺

™

* Trademarks of System General Corporation, used under license by Fairchild Semiconductor.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE

RELIABILITY, FUNCTION, OR DESIGN. T

O OBTAIN THE LATEST, MOST UP-TO-DATE DATASHEET AND PRODUCT INFORMATION, VISIT OUR WEBSITE

AT HTTP://WWW.FAIRCHILDSEMI.COM.

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.

THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY

THEREIN, WHICH COVERS THESE PRODUCTS.

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 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.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com,

under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their

parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed

applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the

proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild

Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors

are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical

and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise.

Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global

problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification Product Status Definition

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

in any manner without notice.

Preliminary First Production

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

Semiconductor reserves the right to make changes at any time without notice to improve design.

No Identification Needed Full Production Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make

changes at any time without notice to improve the design.

Obsolete Not In Production Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor.

The datasheet is for reference information only.

Rev. I71