ST MICROELECTRONICS L7812CP STM Datasheet
Features
■ Output current to 1.5 A
■ Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18;
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, D
fixed 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 and DPAK packages and several
L78xx
L78xxC
Positive voltage regulators
TO-220
TO-3
DPAK
TO-220FP
D²PAK
Table 1. Device summary
Part numbers
L7805 L7809C
L7805C L7812C
L7806C L7815C
L7808C L7818C
L7885C L7824C
March 2008 Rev 19 1/56
www.st.com
56
Contents L78xx - L78xxC
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2/56
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7. Ripple rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. Dropout voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 9. Peak output current vs input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 10. Supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 11. Output voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 12. Output impedance vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 13. Quiescent current vs junction temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 14. Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 15. Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 16. Quiescent current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 17. Fixed output regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 18. Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 19. Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 20. Adjustable output regulator (7 to 30 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 21. 0.5 to 10 V regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 22. High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 23. High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 24. Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 25. Split power supply (± 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 26. Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 27. Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 28. High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 29. High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 30. High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 31. High input and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 32. Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 33. Remote shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 34. Power AM modulator (unity voltage gain, I
Figure 35. Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 36. Light controllers (V
Figure 37. Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 38
Figure 38. Drawing dimension TO-220 (type SMIC-subcon.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 39. Drawing dimension TO-220 (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 40. Drawing dimension TO-220FP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 41. Drawing dimension TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 42. Drawing dimension DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 43. Drawing dimension tape and reel for DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 44. Drawing dimension D²PAK (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 45. Drawing dimension D²PAK (type WOOSEOK-Subcon.). . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 46. D²PAK footprint recommended data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 47. Drawing dimension tape and reel for D²PAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
= VXX + VBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Omin
≤ 0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
O
3/56
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5. Electrical characteristics of L7806 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 6. Electrical characteristics of L7808 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 7. Electrical characteristics of L7812 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. Electrical characteristics of L7815 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 9. Electrical characteristics of L7818 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 10. Electrical characteristics of L7820 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 11. Electrical characteristics of L7824 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 12. Electrical characteristics of L7805C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 13. Electrical characteristics of L7852C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 14. Electrical characteristics of L7806C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 15. Electrical characteristics of L7808C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 16. Electrical characteristics of L7885C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 17. Electrical characteristics of L7809C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 18. Electrical characteristics of L7810C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 19. Electrical characteristics of L7812C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 20. Electrical characteristics of L7815C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 21. Electrical characteristics of L7818C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 22. Electrical characteristics of L7820C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 23. Electrical characteristics of L7824C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 24. TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 25. TO-220FP mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 26. TO-3 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 27. DPAK mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 28. Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 29. D²PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 30. D²PAK footprint data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 31. Tape and reel D²PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 32. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 33. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4/56
L78xx - L78xxC Diagram
1 Diagram
Figure 1. Block diagram
5/56
Pin configuration L78xx - L78xxC
2 Pin configuration
Figure 2. Pin connections (top view)
TO-220
D2PAK (Any Type)
Figure 3. Schematic diagram
DPAK
TO-220FP
TO-3
6/56
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 DPAK TO-220 TO-220FP TO-3 Unit
R
R
Thermal resistance junction-case 3 8 5 5 4 °C/W
thJC
Thermal resistance junction-ambient 62.5 100 50 60 35 °C/W
thJA
Figure 4. Application circuits
7/56
Test circuits L78xx - L78xxC
4 Test circuits
Figure 5. DC parameter
Figure 6. Load regulation
Figure 7. Ripple rejection
8/56
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
9/56
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
10/56
L78xx - L78xxC Electrical characteristics
Table 6. Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150 °C, VI = 14V,
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 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
11/56
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
12/56
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
13/56
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
14/56
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
15/56
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
16/56
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
17/56
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