ST L7805, L7810C, L7805C, L7812C, L7852C User Manual

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Features

■ Output current to 1.5 A

■ Output voltages of 5; 5.2; 6; 8; 8.5; 9; 10; 12;

15; 18; 20; 24 V

■ Thermal overload protection

■ Short circuit protection

■ Output transition SOA protection

Description

The L78xx series of three-terminal positive
regulators is available in TO-220, TO-220FP,
TO-3 and D
output voltages, making it useful in a wide range
of applications. These regulators can provide
local on-card regulation, eliminating the
distribution problems associated with single point
regulation. Each type employs internal current
limiting, thermal shut-down and safe area
protection, making it essentially indestructible. 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 external components to
obtain adjustable voltage and currents.

2

PAK packages and several fixed

L78xx

L78xxC

Positive voltage regulators

TO-220

2

D

PAK

TO-220FP

TO-3

Table 1. Device summary

Order codes

L7805 L7810C

L7805C L7812C

L7852C L7815C

L7806C L7818C

L7808C L7820C

L7885C L7824C

L7809C

August 2007 Rev. 16 1/52

www.st.com

52

L78xx - L78xxC

Contents

1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2/52

L78xx - L78xxC List of figures

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4. Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. DC Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6. Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 7. Ripple rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 8. Dropout voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 9. Peak output current vs input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 10. Supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 11. Output voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 12. Output impedance vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 13. Quiescent current vs junction temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 14. Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 15. Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 16. Quiescent current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 17. Fixed output regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 18. Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 19. Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 20. Adjustable output regulator (7 to 30 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 21. 0.5 to 10 V Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 22. High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 23. High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 24. Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 25. Split power supply (± 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 26. Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 27. Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 28. High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 29. High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 30. High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 31. High input and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 32. Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 33. Remote shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 34. Power AM modulator (unity voltage gain, I

Figure 35. Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 36. Light controllers (V

Figure 37. Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 40

Figure 38. Drawing dimension D
Figure 39. Drawing dimension D
Figure 40. D

2

PAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

= VXX + VBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Omin

2

PAK (type STD-ST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2

PAK (type WOOSEOK-SUBCON.) . . . . . . . . . . . . . . . . . . . . . . . . . 46

≤ 0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

O

3/52

List of tables L78xx - L78xxC

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. Electrical characteristics of L7805 (refer to the test circuits, T

V

= 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 11

I

Table 5. Electrical characteristics of L7806 (refer to the test circuits, T

V

= 11 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . . 12

I

Table 6. Electrical characteristics of L7808 (refer to the test circuits, T

V

= 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . . 13

I

Table 7. Electrical characteristics of L7812 (refer to the test circuits, T

V

= 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 14

I

Table 8. Electrical characteristics of L7815 (refer to the test circuits, T

V

= 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 15

I

Table 9. Electrical characteristics of L7818 (refer to the test circuits, T

V

= 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 16

I

Table 10. Electrical characteristics of L7820 (refer to the test circuits, T

V

= 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 17

I

Table 11. Electrical characteristics of L7824 (refer to the test circuits, T

V

= 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 18

I

Table 12. Electrical characteristics of L7805C (refer to the test circuits, T

V

= 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 19

I

Table 13. Electrical characteristics of L7852C (refer to the test circuits, T

V

= 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 20

I

Table 14. Electrical characteristics of L7806C (refer to the test circuits, T

V

= 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 21

I

Table 15. Electrical characteristics of L7808C (refer to the test circuits, T

V

= 14 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 22

I

Table 16. Electrical characteristics of L7885C (refer to the test circuits, T

V

= 14.5 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . 23

I

Table 17. Electrical characteristics of L7809C (refer to the test circuits, T

V

= 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 24

I

Table 18. Electrical characteristics of L7810C (refer to the test circuits, T

V

= 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 25

I

Table 19. Electrical characteristics of L7812C (refer to the test circuits, T

V

= 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 26

I

Table 20. Electrical characteristics of L7815C (refer to the test circuits, T

V

= 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 27

I

Table 21. Electrical characteristics of L7818C (refer to the test circuits, T

V

= 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 28

I

Table 22. Electrical characteristics of L7820C (refer to the test circuits, T

V

= 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 29

I

Table 23. Electrical characteristics of L7824C (refer to the test circuits, T

V

= 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 30

I

Table 24. D

2

PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 25. Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 26. Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 27. Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= -55 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

= 0 to 150°C,

J

4/52

L78xx - L78xxC Diagram

1 Diagram

Figure 1. Block diagram

5/52

Pin configuration L78xx - L78xxC

2 Pin configuration

Figure 2. Pin connections (top view)

TO-220

D2PAK (Any Type)

Figure 3. Schematic diagram

TO220FP

TO-3

6/52

L78xx - L78xxC Maximum ratings

3 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

for V

= 5 to 18 V 35

O

= 20, 24 V 40

for V

O

for L7800 -55 to 150

for L7800C 0 to 150

V

°C

T

P

T

V

I

STG

OP

DC Input voltage

I

Output current Internally Limited

O

Power dissipation Internally Limited

D

Storage temperature range -65 to 150 °C

Operating junction temperature range

Note: Absolute Maximum Ratings are those values beyond which damage to the device may

occur. Functional operation under these condition is not implied

Table 3. Thermal data

Symbol Parameter D2PAK TO-220 TO-220FP TO-3 Unit

R

R

Thermal resistance junction-case 3 5 5 4 °C/W

thJC

Thermal resistance junction-ambient 62.5 50 60 35 °C/W

thJA

7/52

Maximum ratings L78xx - L78xxC

Figure 4. Application circuits

8/52

L78xx - L78xxC Test circuits

4 Test circuits

Figure 5. DC Parameter

Figure 6. Load regulation

9/52

Test circuits L78xx - L78xxC

Figure 7. Ripple rejection

10/52

L78xx - L78xxC Electrical characteristics

5 Electrical characteristics

Table 4. Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150°C, VI = 10 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

Output voltage TJ = 25°C 4.8 5 5.2 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

O

= 8 to 20 V

V

I

V

= 7 to 25 V, TJ = 25°C 3 50

I

= 8 to 12 V, TJ = 25°C 1 25

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 100

O

= 250 to 750 mA, TJ = 25°C 25

I

O

4.65 5 5.35 V

IO = 5 mA to 1 A 0.5

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 0.6 mV/°C

O

= 8 to 25 V 0.8

V

I

= 25°C 40 µV/V

J

SVR Supply voltage rejection VI = 8 to 18 V, f = 120 Hz 68 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 17 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

11/52

Electrical characteristics L78xx - L78xxC

Table 5. Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150°C, VI = 11 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 5.75 6 6.25 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 0.7 mV/°C

O

O

= 9 to 21 V

V

I

V

= 8 to 25 V, TJ = 25°C 60

I

= 9 to 13 V, TJ = 25°C 30

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 100

O

= 250 to 750 mA, TJ = 25°C 30

I

O

I

= 5 mA to 1 A 0.5

O

= 9 to 25 V 0.8

V

I

= 25°C 40 µV/V

J

5.65 6 6.35 V

SVR Supply voltage rejection VI = 9 to 19 V, f = 120 Hz 65 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 19 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

12/52

L78xx - L78xxC Electrical characteristics

Table 6. Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150°C, VI = 14V, IO

= 500 mA, C

Symbol Parameter Test conditions Min. Typ. Max. Unit

= 0.33 µF, CO = 0.1 µF unless otherwise specified)

I

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 7.7 8 8.3 V

O

= 5 mA to 1A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 1 mV/°C

O

O

= 11.5 to 23 V

V

I

V

= 10.5 to 25 V, TJ = 25°C 80

I

= 11 to 17 V, TJ = 25°C 40

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 100

O

= 250 to 750 mA, TJ = 25°C 40

I

O

I

= 5 mA to 1 A 0.5

O

= 11.5 to 25 V 0.8

V

I

= 25°C 40 µV/V

J

7.6 8 8.4 V

SVR Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz 62 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 16 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

13/52

Electrical characteristics L78xx - L78xxC

Table 7. Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150°C, VI = 19 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 11.5 12 12.5 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 1.5 mV/°C

O

O

= 15.5 to 27 V

V

I

V

= 14.5 to 30 V, TJ = 25°C 120

I

= 16 to 22 V, TJ = 25°C 60

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 100

O

= 250 to 750 mA, TJ = 25°C 60

I

O

I

= 5 mA to 1 A 0.5

O

= 15 to 30 V 0.8

V

I

= 25°C 40 µV/V

J

11.4 12 12.6 V

SVR Supply voltage rejection VI = 15 to 25 V, f = 120 Hz 61 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 18 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

14/52

L78xx - L78xxC Electrical characteristics

Table 8. Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150°C, VI = 23 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 14.4 15 15.6 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 1.8 mV/°C

O

O

= 18.5 to 30 V

V

I

V

= 17.5 to 30 V, TJ = 25°C 150

I

= 20 to 26 V, TJ = 25°C 75

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 150

O

= 250 to 750 mA, TJ = 25°C 75

I

O

I

= 5 mA to 1 A 0.5

O

= 18.5 to 30 V 0.8

V

I

= 25°C 40 µV/V

J

14.25 15 15.75 V

SVR Supply voltage rejection VI = 18.5 to 28.5 V, f = 120 Hz 60 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 19 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

15/52

Electrical characteristics L78xx - L78xxC

Table 9. Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150°C, VI = 26 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 17.3 18 18.7 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 2.3 mV/°C

O

O

= 22 to 33 V

V

I

V

= 21 to 33 V, TJ = 25°C 180

I

= 24 to 30 V, TJ = 25°C 90

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 180

O

= 250 to 750 mA, TJ = 25°C 90

I

O

I

= 5 mA to 1 A 0.5

O

= 22 to 33 V 0.8

V

I

= 25°C 40 µV/V

J

17.1 18 18.9 V

SVR Supply voltage rejection VI = 22 to 32 V, f = 120 Hz 59 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 22 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

16/52

L78xx - L78xxC Electrical characteristics

Table 10. Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150°C, VI = 28 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 19.2 20 20.8 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 2.5 mV/°C

O

O

= 24 to 35 V

V

I

V

= 22.5 to 35 V, TJ = 25°C 200

I

= 26 to 32 V, TJ = 25°C 100

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 200

O

= 250 to 750 mA, TJ = 25°C 100

I

O

I

= 5 mA to 1 A 0.5

O

= 24 to 35 V 0.8

V

I

= 25°C 40 µV/V

J

19 20 21 V

SVR Supply voltage rejection VI = 24 to 35 V, f = 120 Hz 58 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 24 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

17/52

Electrical characteristics L78xx - L78xxC

Table 11. Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150°C, VI = 33 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 23 24 25 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 6 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA 3 mV/°C

O

O

= 28 to 38 V

V

I

V

= 27 to 38 V, TJ = 25°C 240

I

= 30 to 36 V, TJ = 25°C 120

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 240

O

= 250 to 750 mA, TJ = 25°C 120

I

O

I

= 5 mA to 1 A 0.5

O

= 28 to 38 V 0.8

V

I

= 25°C 40 µV/V

J

22.8 24 25.2 V

SVR Supply voltage rejection VI = 28 to 38 V, f = 120 Hz 56 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V

d

Output resistance f = 1 KHz 28 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A

sc

Short circuit peak current TJ = 25°C 1.3 2.2 3.3 A

scp

mV

mV

mA

O

18/52

L78xx - L78xxC Electrical characteristics

Table 12. Electrical characteristics of L7805C (refer to the test circuits, T

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

= 0 to 150°C, VI = 10 V,

J

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 4.8 5 5.2 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1.1 mV/°C

O

O

= 7 to 20 V

V

I

V

= 7 to 25 V, TJ = 25°C 3 100

I

= 8 to 12 V, TJ = 25°C 1 50

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 100

O

= 250 to 750 mA, TJ = 25°C 50

I

O

I

= 5 mA to 1 A 0.5

O

= 7 to 25 V 0.8

V

I

= 25°C 40 µV/V

J

4.75 5 5.25 V

SVR Supply voltage rejection VI = 8 to 18 V, f = 120 Hz 62 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 17 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

19/52

Electrical characteristics L78xx - L78xxC

Table 13. Electrical characteristics of L7852C (refer to the test circuits, T

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

= 0 to 150°C, VI = 10 V,

J

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 5.0 5.2 5.4 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 8 to 20 V

V

I

V

= 7 to 25 V, TJ = 25°C 3 105

I

= 8 to 12 V, TJ = 25°C 1 52

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 105

O

= 250 to 750 mA, TJ = 25°C 52

I

O

I

= 5 mA to 1 A 0.5

O

= 7 to 25 V 1.3

V

I

= 25°C 42 µV/V

J

4.95 5.2 5.45 V

SVR Supply voltage rejection VI = 8 to 18 V, f = 120 Hz 61 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 17 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.75 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

20/52

L78xx - L78xxC Electrical characteristics

Table 14. Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150°C, VI = 11 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 5.75 6 6.25 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -0.8 mV/°C

O

O

= 8 to 21 V

V

I

V

= 8 to 25 V, TJ = 25°C 120

I

= 9 to 13 V, TJ = 25°C 60

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 120

O

= 250 to 750 mA, TJ = 25°C 60

I

O

I

= 5 mA to 1 A 0.5

O

= 8 to 25 V 1.3

V

I

= 25°C 45 µV/V

J

5.7 6 6.3 V

SVR Supply voltage rejection VI = 9 to 19 V, f = 120 Hz 59 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 19 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.55 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

21/52

Electrical characteristics L78xx - L78xxC

Table 15. Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150°C, VI = 14 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 7.7 8 8.3 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -0.8 mV/°C

O

O

= 10.5 to 25 V

V

I

V

= 10.5 to 25 V, TJ = 25°C 160

I

= 11 to 17 V, TJ = 25°C 80

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 160

O

= 250 to 750 mA, TJ = 25°C 80

I

O

I

= 5 mA to 1 A 0.5

O

= 10.5 to 25 V 1

V

I

= 25°C 52 µV/V

J

7.6 8 8.4 V

SVR Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz 56 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 16 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.45 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

22/52

L78xx - L78xxC Electrical characteristics

Table 16. Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150°C, VI = 14.5 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 8.2 8.5 8.8 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -0.8 mV/°C

O

O

= 11 to 26 V

V

I

V

= 11 to 27 V, TJ = 25°C 160

I

= 11.5 to 17.5 V, TJ = 25°C 80

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 160

O

= 250 to 750 mA, TJ = 25°C 80

I

O

I

= 5 mA to 1 A 0.5

O

= 11 to 27 V 1

V

I

= 25°C 55 µV/V

J

8.1 8.5 8.9 V

SVR Supply voltage rejection VI = 12 to 22V, f = 120Hz 56 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 16 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.45 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

23/52

Electrical characteristics L78xx - L78xxC

Table 17. Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 8.64 9 9.36 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 11.5 to 26 V

V

I

V

= 11.5 to 26 V, TJ = 25°C 180

I

= 12 to 18 V, TJ = 25°C 90

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 180

O

= 250 to 750 mA, TJ = 25°C 90

I

O

I

= 5 mA to 1 A 0.5

O

= 11.5 to 26 V 1

V

I

= 25°C 70 µV/V

J

8.55 9 9.45 V

SVR Supply voltage rejection VI = 12 to 23 V, f = 120 Hz 55 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 17 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.40 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

24/52

L78xx - L78xxC Electrical characteristics

Table 18. Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 9.6 10 10.4 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 12.5 to 26 V

V

I

V

= 12.5 to 26 V, TJ = 25°C 200

I

= 13.5 to 19 V, TJ = 25°C 100

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 200

O

= 250 to 750 mA, TJ = 25°C 100

I

O

I

= 5 mA to 1 A 0.5

O

= 12.5 to 26 V 1

V

I

= 25°C 70 µV/V

J

9.5 10 10.5 V

SVR Supply voltage rejection VI = 13 to 23 V, f = 120 Hz 55 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 17 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.40 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

25/52

Electrical characteristics L78xx - L78xxC

Table 19. Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150°C, VI = 19 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 11.5 12 12.5 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 14.5 to 27 V

V

I

V

= 14.5 to 30 V, TJ = 25°C 240

I

= 16 to 22 V, TJ = 25°C 120

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 240

O

= 250 to 750 mA, TJ = 25°C 120

I

O

I

= 5 mA to 1 A 0.5

O

= 14.5 to 30 V 1

V

I

= 25°C 75 µV/V

J

11.4 12 12.6 V

SVR Supply voltage rejection VI = 15 to 25 V, f = 120 Hz 55 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 18 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.35 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

26/52

L78xx - L78xxC Electrical characteristics

Table 20. Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150°C, VI = 23 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 14.5 15 15.6 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 17.5 to 30 V

V

I

V

= 17.5 to 30 V, TJ = 25°C 300

I

= 20 to 26 V, TJ = 25°C 150

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 300

O

= 250 to 750 mA, TJ = 25°C 150

I

O

I

= 5 mA to 1A 0.5

O

= 17.5 to 30 V 1

V

I

= 25°C 90 µV/V

J

14.25 15 15.75 V

SVR Supply voltage rejection VI = 18.5 to 28.5 V, f = 120 Hz 54 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 19 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.23 A

sc

Short circuit peak current TJ = 25°C 2.2 A

scp

mV

mV

mA

O

27/52

Electrical characteristics L78xx - L78xxC

Table 21. Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150°C, VI = 26 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B = 10 Hz to 100 KHz, T

Output voltage TJ = 25°C 17.3 18 18.7 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 21 to 33 V

V

I

V

= 21 to 33 V, TJ = 25°C 360

I

= 24 to 30 V, TJ = 25°C 180

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 360

O

= 250 to 750 mA, TJ = 25°C 180

I

O

I

= 5 mA to 1 A 0.5

O

= 21 to 33 V 1

V

I

= 25°C 110 µV/V

J

17.1 18 18.9 V

SVR Supply voltage rejection VI = 22 to 32 V, f = 120 Hz 53 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 22 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.20 A

sc

Short circuit peak current TJ = 25°C 2.1 A

scp

mV

mV

mA

O

28/52

L78xx - L78xxC Electrical characteristics

Table 22. Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150°C, VI = 28 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B =10 Hz to 100 KHz, T

Output voltage TJ = 25°C 19.2 20 20.8 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1 mV/°C

O

O

= 23 to 35 V

V

I

V

= 22.5 to 35 V, TJ = 25°C 400

I

= 26 to 32 V, TJ = 25°C 200

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 400

O

= 250 to 750 mA, TJ = 25°C 200

I

O

I

= 5 mA to 1 A 0.5

O

= 23 to 35 V 1

V

I

= 25°C 150 µV/V

J

19 20 21 V

SVR Supply voltage rejection VI = 24 to 35 V, f = 120 Hz 52 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 24 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.18 A

sc

Short circuit peak current TJ = 25°C 2.1 A

scp

mV

mV

mA

O

29/52

Electrical characteristics L78xx - L78xxC

Table 23. Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150°C, VI = 33 V,

I

= 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

O

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

V

ΔV

ΔV

ΔI

ΔV

eN Output noise voltage B = 10 Hz to 100 KHz, T

Output voltage TJ = 25°C 23 24 25 V

O

= 5 mA to 1 A, PO ≤ 15 W

I

Output voltage

O

(1)

Line regulation

O

(1)

Load regulation

O

Quiescent current TJ = 25°C 8 mA

I

d

Quiescent current change

d

/ΔT Output voltage drift IO = 5 mA -1.5 mV/°C

O

O

= 27 to 38 V

V

I

V

= 27 to 38 V, TJ = 25°C 480

I

= 30 to 36 V, TJ = 25°C 240

V

I

I

= 5 mA to 1.5 A, TJ = 25°C 480

O

= 250 to 750 mA, TJ = 25°C 240

I

O

I

= 5 mA to 1 A 0.5

O

= 27 to 38 V 1

V

I

= 25°C 170 µV/V

J

22.8 24 25.2 V

SVR Supply voltage rejection VI = 28 to 38 V, f = 120 Hz 50 dB

V

R

I

I

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 cycle is used.

Dropout voltage IO = 1 A, TJ = 25°C 2 V

d

Output resistance f = 1 KHz 28 mΩ

O

Short circuit current VI = 35 V, TJ = 25°C 0.15 A

sc

Short circuit peak current TJ = 25°C 2.1 A

scp

mV

mV

mA

O

30/52

L78xx - L78xxC Typical performance

6 Typical performance

Figure 8. Dropout voltage vs junction

temperature

Figure 10. Supply voltage rejection vs

frequency

Figure 9. Peak output current vs input/output

differential voltage

Figure 11. Output voltage vs junction

temperature

Figure 12. Output impedance vs frequency Figure 13. Quiescent current vs junction temp.

31/52

Typical performance L78xx - L78xxC

Figure 14. Load transient response Figure 15. Line transient response

Figure 16. Quiescent current vs input voltage

Figure 17. Fixed output regulator

1. To specify an output voltage, substitute voltage value for "XX".

2. Although no output capacitor is need for stability, it does improve transient response.

3. Required if regulator is locate an appreciable distance from power supply filter.

32/52

L78xx - L78xxC Typical performance

Figure 18. Current regulator

IO = VXX/R1+I

Figure 19. Circuit for increasing output voltage

IR1 ≥ 5 I

d

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

d

2

Figure 20. Adjustable output regulator (7 to 30V)

33/52

Typical performance L78xx - L78xxC

Figure 21. 0.5 to 10V Regulator

VO=VXXR4/R

Figure 22. High current voltage regulator

R1 = ______________

IO = I

I

REQ

REG

1

V

BEQ1

-(IQ1/βQ1)

+ Q1 (I

REG

V

BEQ1

______)

R

1

Figure 23. High output current with short circuit protection

RSC=V

BEQ2/ISC

34/52

L78xx - L78xxC Typical performance

Figure 24. Tracking voltage regulator

Figure 25. Split power supply (± 15V - 1 A)

* Against potential latch-up problems.

35/52

Typical performance L78xx - L78xxC

Figure 26. Negative output voltage circuit

Figure 27. Switching regulator

Figure 28. High input voltage circuit

VIN = VI - (VZ + VBE)

36/52

L78xx - L78xxC Typical performance

Figure 29. High input voltage circuit

Figure 30. High output voltage regulator

Figure 31. High input and output voltage

VO = VXX + V

Z1

37/52

Typical performance L78xx - L78xxC

Figure 32. Reducing power dissipation with dropping resistor

V

I(min)-VXX-VDROP(max)

R = ____________________

I

O(max)+Id(max)

Figure 33. Remote shutdown

Figure 34. Power AM modulator (unity voltage gain, IO ≤ 0.5)

Note: The circuit performs well up to 100 KHz.

38/52

L78xx - L78xxC Typical performance

Figure 35. Adjustable output voltage with temperature compensation

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

BE

Note: Q2 is connected as a diode in order to compensate the variation of the Q1 VBE with the

temperature. C allows a slow rise time of the V

Figure 36. Light controllers (V

= VXX + VBE)

Omin

.

O

V

falls when the light goes up

O

VO rises when the light goes up

39/52

Typical performance L78xx - L78xxC

Figure 37. Protection against input short-circuit with high capacitance loads

1. Application with high capacitance loads and an output voltage greater than 6 volts need an external diode
(see fig. 32) to protect the device against input short circuit. In this case the input voltage falls rapidly while
the output voltage decrease slowly. The capacitance discharges by means of the Base-Emitter junction of
the series pass transistor in the regulator. If the energy is sufficiently high, the transistor may be destroyed.
The external diode by-passes the current from the IC to ground.

40/52

L78xx - L78xxC Package mechanical data

7 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.

41/52

Package mechanical data L78xx - L78xxC

TO-3 mechanical data

Dim.

A 11.85 0.466

B0.96 1.05 1.10 0.037 0.041 0.043

C 1.70 0.066

D 8.7 0.342

E 20.0 0.787

G 10.9 0.429

N 16.9 0.665

P 26.2 1.031

R 3.88 4.09 0.152 0.161

U 39.5 1.555

V 30.10 1.18 5

Min. Typ. Max. Min. Typ. Max.

mm. inch.

P

A

G

U

V

N

O

B

D

C

E

R

P003C/C

42/52

L78xx - L78xxC Package mechanical data

TO-220 (A type) mechanical data

Dim.

A 4.40 4.60 0.173 0.181

b 0.61 0.88 0.024 0.035

b1 1.15 1.70 0.045 0.067

c0.49 0.70 0.019 0.028

D 15.25 15.75 0.600 0.620

E 10.0 10.40 0.394 0.409

e 2.4 2.7 0.094 0.106

e1 4.95 5.15 0.195 0.203

F1.23 1.32 0.048 0.052

H1 6.2 6.6 0.244 0.260

J1 2.40 2.72 0.094 0.107

L13.0 14.0 0.512 0.551

L1 3.5 3.93 0.138 0.155

L20 16.4 0.646

L3028.9 1.138

φP 3.75 3.85 0.148 0.152

Q 2.65 2.95 0.104 0.116

Min. Typ. Max. Min. Typ. Max.

mm. inch.

0015988/N

43/52

Package mechanical data L78xx - L78xxC

H

TO-220FP mechanical data

Dim.

Min. Typ Max. Min. Typ. Max.

A 4.40 4.60 0.173 0.181

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.017 0.027

F 0.75 1 0.0300.039

F1 1.15 1.50 0.045 0.059

F2 1.15 1.50 0.045 0.059

G4.95 5.2 0.194 0.204

G1 2.4 2.7 0.094 0.106

H 10.0 10.40 0.393 0.409

L2 16 0.630

L3 28.6 30.6 1.126 1.204

L4 9.8 10.6 0.3850.417

L5 2.93.6 0.114 0.142

L6 15.9 16.4 0.626 0.645

L7 99.3 0.354 0.366

DIA. 33.2 0.118 0.126

mm. inch.

44/52

7012510A-

L78xx - L78xxC Package mechanical data

Figure 38. Drawing dimension D2PAK (type STD-ST)

0079457/L

45/52

Package mechanical data L78xx - L78xxC

Figure 39. Drawing dimension D2PAK (type WOOSEOK-SUBCON.)

46/52

0079457/L

L78xx - L78xxC Package mechanical data

Table 24. D

DIM.

A 4.40 4.60 4.30 4.70

A1 0.03 0.23 0 0.20

b 0.70 0.93 0.70 0.90

b2 1.14 1.70 1.17 1.37

c 0.45 0.60 0.45 0.50 0.60

c2 1.23 1.36 1.25 1.30 1.40

D 8.95 9.35 9 9.20 9.40

D1 7.50 7.50

E 10 10.40 9.80 10.20

E1 8.50 7.50

e2.54 2.54

e1 4.88 5.28 5.08

H 15 15.85 15 15.30 15.60

J1 2.49 2.69 2.20 2.60

L 2.29 2.79 1.79 2.79

2

PAK mechanical data

TYPE STD-ST TYPE WOOSEOK-SUBCON.

mm. mm.

MIN. TYP. MAX. MIN. TYP. MAX.

L1 1.27 1.40 1 1.40

L2 1.30 1.75 1.20 1.60

R 0.4 0.30

V2 0° 8° 0° 3°

Note: The D2PAK package coming from the subcontractor Wooseok is fully compatible with the

ST's package suggested footprint.

47/52

Package mechanical data L78xx - L78xxC

Figure 40. D2PAK footprint recommended data

Table 25. Footprint data

A 12.20 0.480

B9.750.384

C 16.90 0.665

D3.500.138

E1.600.063

F2.540.100

G5.080.200

VALUES

mm. inch.

48/52

L78xx - L78xxC Package mechanical data

Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data

Dim.

Min. Typ. Max. Min. Typ. Max.

A180 7.086

C 12.8 13.0 13.2 0.504 0.512 0.519

D 20.2 0.795

N60 2.362

T 14.4 0.567

Ao 10.50 10.6 10.70 0.413 0.417 0.421

Bo 15.70 15.80 15.90 0.618 0.622 0.626

Ko 4.804.90 5.00 0.189 0.193 0.197

Po 3 .9 4.0 4.1 0.153 0.157 0.161

P 11.9 12.0 12.1 0.468 0.472 0.476

mm. inch.

49/52

Order code L78xx - L78xxC

8 Order code

Table 26. Order code

Packaging

Part numbers

L7805 L7805T

L7805C L7805CV L7805CD2T-TR L7805CP L7805CT

L7852C L7852CV L7852CD2T-TR

L7806C L7806CV L7806CD2T-TR L7806CT

L7808C L7808CV L7808CD2T-TR L7808CP L7808CT

L7885C L7885CV L7885CD2T-TR

L7809C L7809CV L7809CD2T-TR L7809CP L7809CT

L7810C L7810CV L7810CD2T-TR

L7812C L7812CV L7812CD2T-TR L7812CP L7812CT

L7815C L7815CV L7815CD2T-TR L7815CP L7815CT

L7818C L7818CV L7818CD2T-TR

L7820C L7820CV L7820CD2T-TR

L7824C L7824CV L7824CD2T-TR L7824CP L7824CT

1. Available on request.

TO-220

(A Type)

2

D

PAK TO-220FP TO-3

(1)

(1)

(1)

(1)

(1)

L7852CP

L7885CP

L7820CP

(1)

(1)

(1)

L7852CT

L7885CT

L7820CT

(1)

(1)

L7818CT

(1)

50/52

L78xx - L78xxC Revision history

9 Revision history

Table 27. Revision history

Date Revision Changes

21-Jun-2004 12 Document updating.

03-Aug-2006 13 Order codes has been updated and new template.

2

19-Jan-2007 14 D

31-May-2007 15 Order codes has been updated.

29-Aug-2007 16 Added Table 1. in cover page.

PAK mechanical data has been updated and add footprint data.

51/52

L78xx - L78xxC

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52/52