L7852CD2T-TR1 [STMICROELECTRONICS]
Positive voltage regulators; 正电压稳压器
| 型号： | L7852CD2T-TR1 |
| 厂家： | 
ST |
| 描述： | Positive voltage regulators |
| 文件： | 总52页 (文件大小：1803K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L78xx
L78xxC
Positive voltage regulators
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
TO-220
TO-220FP
Description
The L78xx series of three-terminal positive
regulators is available in TO-220, TO-220FP,
2
TO-3 and D PAK packages and several fixed
output voltages, making it useful in a wide range
of applications. These regulators can provide
local on-card regulation, eliminating the
D2PAK
TO-3
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.
Table 1.
Device summary
Order codes
L7805
L7805C
L7852C
L7806C
L7808C
L7885C
L7809C
L7810C
L7812C
L7815C
L7818C
L7820C
L7824C
August 2007
Rev. 16
1/52
www.st.com
52
L78xx - L78xxC
Contents
1
2
3
4
5
6
7
8
9
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2/52
L78xx - L78xxC
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DC Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ripple rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Dropout voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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 ≤0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
O
Figure 35. Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 36. Light controllers (V
= V + V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Omin
XX BE
Figure 37. Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 40
2
Figure 38. Drawing dimension D PAK (type STD-ST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2
Figure 39. Drawing dimension D PAK (type WOOSEOK-SUBCON.) . . . . . . . . . . . . . . . . . . . . . . . . . 46
2
Figure 40. D PAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3/52
List of tables
L78xx - L78xxC
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics of L7805 (refer to the test circuits, T = -55 to 150°C,
J
V = 10 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 11
I
O
I
O
Table 5.
Electrical characteristics of L7806 (refer to the test circuits, T = -55 to 150°C,
J
V = 11 V,I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . . 12
I
O
I
O
Table 6.
Electrical characteristics of L7808 (refer to the test circuits, T = -55 to 150°C,
J
V = 14V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . . 13
I
O
I
O
Table 7.
Electrical characteristics of L7812 (refer to the test circuits, T = -55 to 150°C,
J
V = 19 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 14
I
O
I
O
Table 8.
Electrical characteristics of L7815 (refer to the test circuits, T = -55 to 150°C,
J
V = 23 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 15
I
O
I
O
Table 9.
Electrical characteristics of L7818 (refer to the test circuits, T = -55 to 150°C,
J
V = 26 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 16
I
O
I
O
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Electrical characteristics of L7820 (refer to the test circuits, T = -55 to 150°C,
J
V = 28 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 17
I
O
I
O
Electrical characteristics of L7824 (refer to the test circuits, T = -55 to 150°C,
J
V = 33 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 18
I
O
I
O
Electrical characteristics of L7805C (refer to the test circuits, T = 0 to 150°C,
J
V = 10 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 19
I
O
I
O
Electrical characteristics of L7852C (refer to the test circuits, T = 0 to 150°C,
J
V = 10 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 20
I
O
I
O
Electrical characteristics of L7806C (refer to the test circuits, T = 0 to 150°C,
J
V = 11 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 21
I
O
I
O
Electrical characteristics of L7808C (refer to the test circuits, T = 0 to 150°C,
J
V = 14 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 22
I
O
I
O
Electrical characteristics of L7885C (refer to the test circuits, T = 0 to 150°C,
J
V = 14.5 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . 23
I
O
I
O
Electrical characteristics of L7809C (refer to the test circuits, T = 0 to 150°C,
J
V = 15 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 24
I
O
I
O
Electrical characteristics of L7810C (refer to the test circuits, T = 0 to 150°C,
J
V = 15 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 25
I
O
I
O
Electrical characteristics of L7812C (refer to the test circuits, T = 0 to 150°C,
J
V = 19 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 26
I
O
I
O
Electrical characteristics of L7815C (refer to the test circuits, T = 0 to 150°C,
J
V = 23 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 27
I
O
I
O
Electrical characteristics of L7818C (refer to the test circuits, T = 0 to 150°C,
J
V = 26 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 28
I
O
I
O
Electrical characteristics of L7820C (refer to the test circuits, T = 0 to 150°C,
J
V = 28 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 29
I
O
I
O
Electrical characteristics of L7824C (refer to the test circuits, T = 0 to 150°C,
J
V = 33 V, I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified) . . . . . . . . 30
I
O
I
O
2
Table 24.
Table 25.
Table 26.
Table 27.
D PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
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
TO220FP
D2PAK (Any Type)
TO-3
Figure 3.
Schematic diagram
6/52
L78xx - L78xxC
Maximum ratings
3
Maximum ratings
Table 2.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
for VO= 5 to 18 V
for VO= 20, 24 V
35
40
VI
DC Input voltage
V
IO
PD
Output current
Internally Limited
Internally Limited
-65 to 150
Power dissipation
TSTG
Storage temperature range
°C
°C
for L7800
-55 to 150
TOP
Operating junction temperature range
for L7800C
0 to 150
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.
Symbol
Thermal data
Parameter
D2PAK
TO-220
TO-220FP
TO-3
Unit
RthJC
RthJA
Thermal resistance junction-case
Thermal resistance junction-ambient
3
5
5
4
°C/W
°C/W
62.5
50
60
35
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
Figure 7.
L78xx - L78xxC
Ripple rejection
10/52
L78xx - L78xxC
Electrical characteristics
5
Electrical characteristics
Table 4.
Electrical characteristics of L7805 (refer to the test circuits, T = -55 to 150°C, V = 10 V,
J I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
4.8
5
5.2
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 8 to 20 V
VO
4.65
5
5.35
V
VI = 7 to 25 V, TJ = 25°C
VI = 8 to 12 V, TJ = 25°C
3
1
50
25
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
100
25
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
IO = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 8 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
0.6
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 8 to 18 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
68
2
2.5
V
RO
Isc
Output resistance
17
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
11/52
Electrical characteristics
L78xx - L78xxC
Table 5.
Electrical characteristics of L7806 (refer to the test circuits, T = -55 to 150°C, V = 11 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
5.75
6
6.25
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 9 to 21 V
VO
5.65
6
6.35
V
VI = 8 to 25 V, TJ = 25°C
VI = 9 to 13 V, TJ = 25°C
60
30
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
100
30
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 9 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
0.7
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 9 to 19 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
65
2
2.5
V
RO
Isc
Output resistance
19
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
12/52
L78xx - L78xxC
Electrical characteristics
Table 6.
Electrical characteristics of L7808 (refer to the test circuits, T = -55 to 150°C, V = 14V, I
J
I
O
= 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
7.7
8
8.3
V
IO = 5 mA to 1A, PO ≤15 W
VO
Output voltage
Line regulation
7.6
8
8.4
V
VI = 11.5 to 23 V
VI = 10.5 to 25 V, TJ = 25°C
VI = 11 to 17 V, TJ = 25°C
80
40
(1)
ΔVO
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
100
40
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 11.5 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 11.5 to 21.5 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
62
2
2.5
V
RO
Isc
Output resistance
16
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
13/52
Electrical characteristics
L78xx - L78xxC
Table 7.
Electrical characteristics of L7812 (refer to the test circuits, T = -55 to 150°C, V = 19 V,
J I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
11.5
12
12.5
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 15.5 to 27 V
VO
11.4
12
12.6
V
VI = 14.5 to 30 V, TJ = 25°C
VI = 16 to 22 V, TJ = 25°C
120
60
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
100
60
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 15 to 30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
1.5
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 15 to 25 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
61
2
2.5
V
RO
Isc
Output resistance
18
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
14/52
L78xx - L78xxC
Electrical characteristics
Table 8.
Electrical characteristics of L7815 (refer to the test circuits, T = -55 to 150°C, V = 23 V,
J I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
14.4
15
15.6
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 18.5 to 30 V
VO
14.25
15
15.75
V
VI = 17.5 to 30 V, TJ = 25°C
VI = 20 to 26 V, TJ = 25°C
150
75
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
150
75
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 18.5 to 30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
1.8
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 18.5 to 28.5 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
60
2
2.5
V
RO
Isc
Output resistance
19
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
15/52
Electrical characteristics
L78xx - L78xxC
Table 9.
Electrical characteristics of L7818 (refer to the test circuits, T = -55 to 150°C, V = 26 V,
J I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
17.3
18
18.7
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 22 to 33 V
VO
17.1
18
18.9
V
VI = 21 to 33 V, TJ = 25°C
VI = 24 to 30 V, TJ = 25°C
180
90
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
180
90
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 22 to 33 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
2.3
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 22 to 32 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
59
2
2.5
V
RO
Isc
Output resistance
22
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
16/52
L78xx - L78xxC
Electrical characteristics
Table 10. Electrical characteristics of L7820 (refer to the test circuits, T = -55 to 150°C, V = 28 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
19.2
20
20.8
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 24 to 35 V
VO
19
20
21
V
VI = 22.5 to 35 V, TJ = 25°C
VI = 26 to 32 V, TJ = 25°C
200
100
200
100
6
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 24 to 35 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
2.5
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 24 to 35 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
58
2
2.5
V
RO
Isc
Output resistance
24
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
17/52
Electrical characteristics
L78xx - L78xxC
Table 11. Electrical characteristics of L7824 (refer to the test circuits, T = -55 to 150°C, V = 33 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
23
24
25
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 28 to 38 V
VO
22.8
24
25.2
V
VI = 27 to 38 V, TJ = 25°C
VI = 30 to 36 V, TJ = 25°C
240
120
240
120
6
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 28 to 38 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
3
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 28 to 38 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
40
56
2
2.5
V
RO
Isc
Output resistance
28
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
Short circuit peak current TJ = 25°C
1.3
A
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.
18/52
L78xx - L78xxC
Electrical characteristics
Table 12. Electrical characteristics of L7805C (refer to the test circuits, T = 0 to 150°C, V = 10 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
4.8
5
5.2
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 7 to 20 V
VO
4.75
5
5.25
V
VI = 7 to 25 V, TJ = 25°C
VI = 8 to 12 V, TJ = 25°C
3
1
100
50
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
100
50
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
8
I
O = 5 mA to 1 A
0.5
0.8
ΔId
Quiescent current change
VI = 7 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1.1
40
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 8 to 18 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
62
2
V
RO
Isc
Output resistance
17
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
19/52
Electrical characteristics
L78xx - L78xxC
Table 13. Electrical characteristics of L7852C (refer to the test circuits, T = 0 to 150°C, V = 10 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
5.0
5.2
5.4
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 8 to 20 V
VO
4.95
5.2
5.45
V
VI = 7 to 25 V, TJ = 25°C
VI = 8 to 12 V, TJ = 25°C
3
1
105
52
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
105
52
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
8
I
O = 5 mA to 1 A
0.5
1.3
ΔId
Quiescent current change
VI = 7 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 8 to 18 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
42
61
2
V
RO
Isc
Output resistance
17
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.75
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
20/52
L78xx - L78xxC
Electrical characteristics
Table 14. Electrical characteristics of L7806C (refer to the test circuits, T = 0 to 150°C, V = 11 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
5.75
6
6.25
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 8 to 21 V
VO
5.7
6
6.3
V
VI = 8 to 25 V, TJ = 25°C
VI = 9 to 13 V, TJ = 25°C
120
60
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
120
60
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
8
I
O = 5 mA to 1 A
0.5
1.3
ΔId
Quiescent current change
VI = 8 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.8
45
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 9 to 19 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
59
2
V
RO
Isc
Output resistance
19
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.55
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
21/52
Electrical characteristics
L78xx - L78xxC
Table 15. Electrical characteristics of L7808C (refer to the test circuits, T = 0 to 150°C, V = 14 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
7.7
8
8.3
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 10.5 to 25 V
VO
7.6
8
8.4
V
VI = 10.5 to 25 V, TJ = 25°C
VI = 11 to 17 V, TJ = 25°C
160
80
160
80
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 10.5 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.8
52
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 11.5 to 21.5 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
56
2
V
RO
Isc
Output resistance
16
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.45
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
22/52
L78xx - L78xxC
Electrical characteristics
Table 16. Electrical characteristics of L7885C (refer to the test circuits, T = 0 to 150°C, V = 14.5 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
8.2
8.5
8.8
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 11 to 26 V
VO
8.1
8.5
8.9
V
VI = 11 to 27 V, TJ = 25°C
160
80
160
80
8
(1)
ΔVO
Line regulation
mV
VI = 11.5 to 17.5 V, TJ = 25°C
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 11 to 27 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.8
55
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 12 to 22V, f = 120Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
56
2
V
RO
Isc
Output resistance
16
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.45
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
23/52
Electrical characteristics
L78xx - L78xxC
Table 17. Electrical characteristics of L7809C (refer to the test circuits, T = 0 to 150°C, V = 15 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
8.64
9
9.36
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 11.5 to 26 V
VO
8.55
9
9.45
V
VI = 11.5 to 26 V, TJ = 25°C
VI = 12 to 18 V, TJ = 25°C
180
90
180
90
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 11.5 to 26 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 12 to 23 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
70
55
2
V
RO
Isc
Output resistance
17
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.40
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
24/52
L78xx - L78xxC
Electrical characteristics
Table 18. Electrical characteristics of L7810C (refer to the test circuits, T = 0 to 150°C, V = 15 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
9.6
10
10.4
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 12.5 to 26 V
VO
9.5
10
10.5
V
VI = 12.5 to 26 V, TJ = 25°C
VI = 13.5 to 19 V, TJ = 25°C
200
100
200
100
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 12.5 to 26 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 13 to 23 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
70
55
2
V
RO
Isc
Output resistance
17
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.40
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
25/52
Electrical characteristics
L78xx - L78xxC
Table 19. Electrical characteristics of L7812C (refer to the test circuits, T = 0 to 150°C, V = 19 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
11.5
12
12.5
12.6
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 14.5 to 27 V
VO
11.4
12
V
VI = 14.5 to 30 V, TJ = 25°C
VI = 16 to 22 V, TJ = 25°C
240
120
240
120
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 14.5 to 30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 15 to 25 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
75
55
2
V
RO
Isc
Output resistance
18
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.35
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
26/52
L78xx - L78xxC
Electrical characteristics
Table 20. Electrical characteristics of L7815C (refer to the test circuits, T = 0 to 150°C, V = 23 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
14.5
15
15.6
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 17.5 to 30 V
VO
14.25
15
15.75
V
VI = 17.5 to 30 V, TJ = 25°C
VI = 20 to 26 V, TJ = 25°C
300
150
300
150
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1A
0.5
1
ΔId
Quiescent current change
VI = 17.5 to 30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 18.5 to 28.5 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
90
54
2
V
RO
Isc
Output resistance
19
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.23
2.2
Iscp
Short circuit peak current TJ = 25°C
A
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.
27/52
Electrical characteristics
L78xx - L78xxC
Table 21. Electrical characteristics of L7818C (refer to the test circuits, T = 0 to 150°C, V = 26 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
17.3
18
18.7
18.9
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 21 to 33 V
VO
17.1
18
V
VI = 21 to 33 V, TJ = 25°C
VI = 24 to 30 V, TJ = 25°C
360
180
360
180
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 21 to 33 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10 Hz to 100 KHz, TJ = 25°C
VI = 22 to 32 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
110
53
2
V
RO
Isc
Output resistance
22
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.20
2.1
Iscp
Short circuit peak current TJ = 25°C
A
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.
28/52
L78xx - L78xxC
Electrical characteristics
Table 22. Electrical characteristics of L7820C (refer to the test circuits, T = 0 to 150°C, V = 28 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
19.2
20
20.8
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 23 to 35 V
VO
19
20
21
V
VI = 22.5 to 35 V, TJ = 25°C
VI = 26 to 32 V, TJ = 25°C
400
200
400
200
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 23 to 35 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 KHz, TJ = 25°C
VI = 24 to 35 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
150
52
2
V
RO
Isc
Output resistance
24
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.18
2.1
Iscp
Short circuit peak current TJ = 25°C
A
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.
29/52
Electrical characteristics
L78xx - L78xxC
Table 23. Electrical characteristics of L7824C (refer to the test circuits, T = 0 to 150°C, V = 33 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
23
24
25
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 27 to 38 V
VO
22.8
24
25.2
V
VI = 27 to 38 V, TJ = 25°C
VI = 30 to 36 V, TJ = 25°C
480
240
480
240
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 27 to 38 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1.5
170
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10 Hz to 100 KHz, TJ = 25°C
VI = 28 to 38 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
50
2
V
RO
Isc
Output resistance
28
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.15
2.1
Iscp
Short circuit peak current TJ = 25°C
A
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.
30/52
L78xx - L78xxC
Typical performance
6
Typical performance
Figure 8.
Dropout voltage vs junction
temperature
Figure 9.
Peak output current vs input/output
differential voltage
Figure 10. Supply voltage rejection vs
frequency
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+Id
Figure 19. Circuit for increasing output voltage
IR1 ≥ 5 Id
VO = VXX(1+R2/R1)+IdR2
Figure 20. Adjustable output regulator (7 to 30V)
33/52
Typical performance
L78xx - L78xxC
Figure 21. 0.5 to 10V Regulator
VO=VXXR4/R1
Figure 22. High current voltage regulator
VBEQ1
R1 = ______________
IREQ-(IQ1/βQ1
)
VBEQ1
IO = IREG + Q1 (IREG ______)
R1
Figure 23. High output current with short circuit protection
RSC=VBEQ2/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 + VZ1
37/52
Typical performance
L78xx - L78xxC
Figure 32. Reducing power dissipation with dropping resistor
VI(min)-VXX-VDROP(max)
R = ____________________
IO(max)+Id(max)
Figure 33. Remote shutdown
Figure 34. Power AM modulator (unity voltage gain, I ≤0.5)
O
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) + VBE
Note:
Q is connected as a diode in order to compensate the variation of the Q V with the
2 1 BE
temperature. C allows a slow rise time of the V .
O
Figure 36. Light controllers (V
= V + V
)
BE
Omin
XX
VO rises when the light goes up
VO falls 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
mm.
inch.
Typ.
Dim.
Min.
Typ.
Max.
Min.
Max.
A
11.85
0.466
0.041
B
C
D
E
G
N
P
R
U
V
0.96
1.05
1.10
1.70
8.7
0.037
0.043
0.066
0.342
0.787
20.0
10.9
16.9
0.429
0.665
26.2
4.09
39.5
1.031
0.161
1.555
3.88
0.152
30.10
1.185
A
D
P
C
G
R
P003C/C
42/52
L78xx - L78xxC
Package mechanical data
TO-220 (A type) mechanical data
mm.
inch.
Dim.
Min.
4.40
0.61
1.15
0.49
15.25
10.0
2.4
Typ.
Max.
4.60
0.88
1.70
0.70
15.75
10.40
2.7
Min.
Typ.
Max.
0.181
0.035
0.067
0.028
0.620
0.409
0.106
0.203
0.052
0.260
0.107
0.551
0.155
A
b
0.173
0.024
0.045
0.019
0.600
0.394
0.094
0.195
0.048
0.244
0.094
0.512
0.138
b1
c
D
E
e
e1
F
4.95
1.23
6.2
5.15
1.32
6.6
H1
J1
L
2.40
13.0
3.5
2.72
14.0
3.93
L1
L20
L30
φP
Q
16.4
0.646
28.9
1.138
3.75
3.85
2.95
0.148
0.152
0.116
2.65
0.104
0015988/N
43/52
Package mechanical data
L78xx - L78xxC
TO-220FP mechanical data
mm.
inch.
Typ.
Dim.
Min.
Typ
Max.
4.60
2.7
Min.
Max.
0.181
0.106
0.108
0.027
0.039
0.059
0.059
0.204
0.106
0.409
A
B
4.40
2.5
0.173
0.098
0.098
0.017
0.030
0.045
0.045
0.194
0.094
0.393
D
2.5
2.75
0.70
1
E
0.45
0.75
1.15
1.15
4.95
2.4
F
F1
F2
G
1.50
1.50
5.2
G1
H
2.7
10.0
10.40
L2
L3
L4
L5
L6
L7
DIA.
16
0.630
28.6
9.8
2.9
15.9
9
30.6
10.6
3.6
1.126
0.385
0.114
0.626
0.354
0.118
1.204
0.417
0.142
0.645
0.366
0.126
16.4
9.3
3
3.2
7012510A-H
44/52
L78xx - L78xxC
Package mechanical data
2
Figure 38. Drawing dimension D PAK (type STD-ST)
0079457/L
45/52
Package mechanical data
L78xx - L78xxC
2
Figure 39. Drawing dimension D PAK (type WOOSEOK-SUBCON.)
0079457/L
46/52
L78xx - L78xxC
Package mechanical data
2
Table 24. D PAK mechanical data
TYPE STD-ST
TYPE WOOSEOK-SUBCON.
DIM.
mm.
TYP.
mm.
TYP.
MIN.
MAX.
MIN.
MAX.
A
A1
b
4.40
0.03
0.70
1.14
0.45
1.23
8.95
7.50
10
4.60
0.23
0.93
1.70
0.60
1.36
9.35
4.30
0
4.70
0.20
0.90
1.37
0.60
1.40
9.40
0.70
1.17
0.45
1.25
9
b2
c
0.50
1.30
9.20
c2
D
D1
E
7.50
9.80
7.50
10.40
10.20
E1
e
8.50
2.54
2.54
5.08
e1
H
4.88
15
5.28
15.85
2.69
2.79
1.40
1.75
15
2.20
1.79
1
15.30
15.60
2.60
2.79
1.40
1.60
J1
L
2.49
2.29
1.27
1.30
L1
L2
R
1.20
0.4
0.30
V2
0°
8°
0°
3°
2
Note:
The D PAK package coming from the subcontractor Wooseok is fully compatible with the
ST's package suggested footprint.
47/52
Package mechanical data
L78xx - L78xxC
2
Figure 40. D PAK footprint recommended data
Table 25. Footprint data
VALUES
mm.
inch.
A
B
C
D
E
F
12.20
9.75
16.90
3.50
1.60
2.54
5.08
0.480
0.384
0.665
0.138
0.063
0.100
0.200
G
48/52
L78xx - L78xxC
Package mechanical data
Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
mm.
Typ.
inch.
Typ.
Dim.
Min.
Max.
180
Min.
Max.
7.086
0.519
A
C
12.8
20.2
60
13.0
13.2
0.504
0.795
2.362
0.512
D
N
T
14.4
10.70
15.90
5.00
4.1
0.567
0.421
0.626
0.197
0.161
0.476
Ao
Bo
Ko
Po
P
10.50
15.70
4.80
3.9
10.6
15.80
4.90
4.0
0.413
0.618
0.189
0.153
0.468
0.417
0.622
0.193
0.157
0.472
11.9
12.0
12.1
49/52
Order code
L78xx - L78xxC
8
Order code
Table 26. Order code
Packaging
Part numbers
TO-220
(A Type)
D2PAK
TO-220FP
TO-3
L7805
L7805C
L7805T
L7805CT
L7852CT(1)
L7806CT
L7808CT
L7885CT(1)
L7809CT
L7805CV
L7852CV
L7806CV
L7808CV
L7885CV
L7809CV
L7810CV
L7812CV
L7815CV
L7818CV
L7820CV
L7824CV
L7805CD2T-TR
L7852CD2T-TR(1)
L7806CD2T-TR
L7808CD2T-TR
L7885CD2T-TR(1)
L7809CD2T-TR
L7810CD2T-TR(1)
L7812CD2T-TR
L7815CD2T-TR
L7818CD2T-TR(1)
L7820CD2T-TR(1)
L7824CD2T-TR
L7805CP
L7852C
L7852CP(1)
L7806C
L7808C
L7808CP
L7885CP(1)
L7809CP
L7885C
L7809C
L7810C
L7812C
L7812CP
L7815CP
L7812CT
L7815CT
L7818CT
L7820CT(1)
L7824CT
L7815C
L7818C
L7820C
L7820CP(1)
L7824CP
L7824C
1. Available on request.
50/52
L78xx - L78xxC
Revision history
9
Revision history
Table 27. Revision history
Date
Revision
Changes
21-Jun-2004
03-Aug-2006
19-Jan-2007
31-May-2007
29-Aug-2007
12
13
14
15
16
Document updating.
Order codes has been updated and new template.
D2PAK mechanical data has been updated and add footprint data.
Order codes has been updated.
Added Table 1. in cover page.
51/52
L78xx - L78xxC
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2007 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
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52/52
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