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, TO-3 and D2PAK 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 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.
D2PAK
TO-3
Table 1.
Device summary
Order codes L7805 L7805C L7852C L7806C L7808C L7885C L7809C L7810C L7812C L7815C L7818C L7820C L7824C
August 2007
Rev. 16
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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
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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. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. 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 Supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Output voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Output impedance vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Quiescent current vs junction temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Quiescent current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Fixed output regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Adjustable output regulator (7 to 30 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 0.5 to 10 V Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Split power supply (± 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 High input and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Remote shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Power AM modulator (unity voltage gain, IO ≤0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 39 Light controllers (VOmin = VXX + VBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 40 Drawing dimension D2PAK (type STD-ST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Drawing dimension D2PAK (type WOOSEOK-SUBCON.) . . . . . . . . . . . . . . . . . . . . . . . . . 46 D2PAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
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List of tables
L78xx - L78xxC
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. 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. Table 24. Table 25. Table 26. Table 27. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 11 Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150°C, VI = 11 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . . 12 Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150°C, VI = 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . . 13 Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150°C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 14 Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150°C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 15 Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150°C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 16 Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150°C, VI = 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 17 Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150°C, VI = 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 18 Electrical characteristics of L7805C (refer to the test circuits, TJ = 0 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 19 Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 20 Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150°C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 21 Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150°C, VI = 14 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 22 Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150°C, VI = 14.5 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . 23 Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 24 Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 25 Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150°C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 26 Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150°C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 27 Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150°C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 28 Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150°C, VI = 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 29 Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150°C, VI = 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified) . . . . . . . . 30 D2PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
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L78xx - L78xxC
Diagram
1
Figure 1.
Diagram
Block diagram
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Pin configuration
L78xx - L78xxC
2
Figure 2.
Pin configuration
Pin connections (top view)
TO-220
TO220FP
D2PAK (Any Type)
TO-3
Figure 3.
Schematic diagram
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L78xx - L78xxC
Maximum ratings
3
Table 2.
Symbol VI IO PD TSTG TOP
Maximum ratings
Absolute maximum ratings
Parameter DC Input voltage Output current Power dissipation Storage temperature range for L7800 Operating junction temperature range for L7800C 0 to 150 for VO= 5 to 18 V for VO= 20, 24 V Value 35 V 40 Internally Limited Internally Limited -65 to 150 -55 to 150 °C °C Unit
Note:
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied Thermal data
Parameter Thermal resistance junction-case Thermal resistance junction-ambient D2PAK 3 62.5 TO-220 5 50 TO-220FP 5 60 TO-3 4 35 Unit °C/W °C/W
Table 3.
Symbol RthJC RthJA
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Maximum ratings Figure 4. Application circuits
L78xx - L78xxC
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L78xx - L78xxC
Test circuits
4
Figure 5.
Test circuits
DC Parameter
Figure 6.
Load regulation
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Test circuits
L78xx - L78xxC
Figure 7.
Ripple rejection
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L78xx - L78xxC
Electrical characteristics
5
Table 4.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics
Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 8 to 20 V VI = 7 to 25 V, TJ = 25°C VI = 8 to 12 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 8 to 25 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 68 2 17 0.75 2.2 1.2 3.3 2.5 0.6 40 Test conditions Min. 4.8 4.65 Typ. 5 5 3 1 Max. 5.2 5.35 50 mV 25 100 mV 25 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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Electrical characteristics Table 5.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
L78xx - L78xxC
Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150°C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 9 to 21 V VI = 8 to 25 V, TJ = 25°C VI = 9 to 13 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 9 to 25 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 65 2 19 0.75 2.2 1.2 3.3 2.5 0.7 40 Test conditions Min. 5.75 5.65 Typ. 6 6 Max. 6.25 6.35 60 mV 30 100 mV 30 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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L78xx - L78xxC
Electrical characteristics
Table 6.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150°C, VI = 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1A, PO ≤15 W VI = 11.5 to 23 V VI = 10.5 to 25 V, TJ = 25°C VI = 11 to 17 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 11.5 to 25 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 62 2 16 0.75 2.2 1.2 3.3 2.5 1 40 Test conditions Min. 7.7 7.6 Typ. 8 8 Max. 8.3 8.4 80 mV 40 100 mV 40 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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Electrical characteristics
L78xx - L78xxC
Table 7.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150°C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 15.5 to 27 V VI = 14.5 to 30 V, TJ = 25°C VI = 16 to 22 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 15 to 30 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 61 2 18 0.75 2.2 1.2 3.3 2.5 1.5 40 Test conditions Min. 11.5 11.4 Typ. 12 12 Max. 12.5 12.6 120 mV 60 100 mV 60 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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L78xx - L78xxC
Electrical characteristics
Table 8.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150°C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 18.5 to 30 V VI = 17.5 to 30 V, TJ = 25°C VI = 20 to 26 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 18.5 to 30 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 60 2 19 0.75 2.2 1.2 3.3 2.5 1.8 40 Test conditions Min. 14.4 14.25 Typ. 15 15 Max. 15.6 15.75 150 mV 75 150 mV 75 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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Electrical characteristics
L78xx - L78xxC
Table 9.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150°C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 22 to 33 V VI = 21 to 33 V, TJ = 25°C VI = 24 to 30 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 22 to 33 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 59 2 22 0.75 2.2 1.2 3.3 2.5 2.3 40 Test conditions Min. 17.3 17.1 Typ. 18 18 Max. 18.7 18.9 180 mV 90 180 mV 90 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
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L78xx - L78xxC
Electrical characteristics
Table 10.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150°C, VI = 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 24 to 35 V VI = 22.5 to 35 V, TJ = 25°C VI = 26 to 32 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 24 to 35 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 58 2 24 0.75 2.2 1.2 3.3 2.5 2.5 40 Test conditions Min. 19.2 19 Typ. 20 20 Max. 20.8 21 200 mV 100 200 mV 100 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150°C, VI = 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 28 to 38 V VI = 27 to 38 V, TJ = 25°C VI = 30 to 36 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 28 to 38 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 1.3 56 2 28 0.75 2.2 1.2 3.3 2.5 3 40 Test conditions Min. 23 22.8 Typ. 24 24 Max. 25 25.2 240 mV 120 240 mV 120 6 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7805C (refer to the test circuits, TJ = 0 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 7 to 20 V VI = 7 to 25 V, TJ = 25°C VI = 8 to 12 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 7 to 25 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 62 2 17 0.75 2.2 -1.1 40 Test conditions Min. 4.8 4.75 Typ. 5 5 3 1 Max. 5.2 5.25 100 mV 50 100 mV 50 8 0.5 mA 0.8 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150°C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 8 to 20 V VI = 7 to 25 V, TJ = 25°C VI = 8 to 12 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 7 to 25 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 61 2 17 0.75 2.2 -1 42 Test conditions Min. 5.0 4.95 Typ. 5.2 5.2 3 1 Max. 5.4 5.45 105 mV 52 105 mV 52 8 0.5 mA 1.3 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150°C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 8 to 21 V VI = 8 to 25 V, TJ = 25°C VI = 9 to 13 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 8 to 25 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 59 2 19 0.55 2.2 -0.8 45 Test conditions Min. 5.75 5.7 Typ. 6 6 Max. 6.25 6.3 120 mV 60 120 mV 60 8 0.5 mA 1.3 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150°C, VI = 14 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 10.5 to 25 V VI = 10.5 to 25 V, TJ = 25°C VI = 11 to 17 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 10.5 to 25 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 56 2 16 0.45 2.2 -0.8 52 Test conditions Min. 7.7 7.6 Typ. 8 8 Max. 8.3 8.4 160 mV 80 160 mV 80 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150°C, VI = 14.5 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 11 to 26 V VI = 11 to 27 V, TJ = 25°C VI = 11.5 to 17.5 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 11 to 27 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25°C VI = 12 to 22V, f = 120Hz IO = 1 A, TJ = 25°C f = 1 KHz VI = 35 V, TJ = 25°C TJ = 25°C 56 2 16 0.45 2.2 -0.8 55 Test conditions Min. 8.2 8.1 Typ. 8.5 8.5 Max. 8.8 8.9 160 mV 80 160 mV 80 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 11.5 to 26 V VI = 11.5 to 26 V, TJ = 25°C VI = 12 to 18 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 11.5 to 26 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 55 2 17 0.40 2.2 -1 70 Test conditions Min. 8.64 8.55 Typ. 9 9 Max. 9.36 9.45 180 mV 90 180 mV 90 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150°C, VI = 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 12.5 to 26 V VI = 12.5 to 26 V, TJ = 25°C VI = 13.5 to 19 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 12.5 to 26 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 55 2 17 0.40 2.2 -1 70 Test conditions Min. 9.6 9.5 Typ. 10 10 Max. 10.4 10.5 200 mV 100 200 mV 100 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150°C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 14.5 to 27 V VI = 14.5 to 30 V, TJ = 25°C VI = 16 to 22 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 14.5 to 30 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 55 2 18 0.35 2.2 -1 75 Test conditions Min. 11.5 11.4 Typ. 12 12 Max. 12.5 12.6 240 mV 120 240 mV 120 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150°C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 17.5 to 30 V VI = 17.5 to 30 V, TJ = 25°C VI = 20 to 26 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1A VI = 17.5 to 30 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 54 2 19 0.23 2.2 -1 90 Test conditions Min. 14.5 14.25 Typ. 15 15 Max. 15.6 15.75 300 mV 150 300 mV 150 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150°C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 21 to 33 V VI = 21 to 33 V, TJ = 25°C VI = 24 to 30 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 21 to 33 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 53 2 22 0.20 2.1 -1 110 Test conditions Min. 17.3 17.1 Typ. 18 18 Max. 18.7 18.9 360 mV 180 360 mV 180 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150°C, VI = 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 23 to 35 V VI = 22.5 to 35 V, TJ = 25°C VI = 26 to 32 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 23 to 35 V I O = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 52 2 24 0.18 2.1 -1 150 Test conditions Min. 19.2 19 Typ. 20 20 Max. 20.8 21 400 mV 200 400 mV 200 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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 Table 23.
Symbol VO VO ΔVO(1) ΔVO(1) Id ΔI d ΔVO/ΔT eN SVR Vd RO Isc Iscp
L78xx - L78xxC
Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150°C, VI = 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)
Parameter Output voltage Output voltage TJ = 25°C IO = 5 mA to 1 A, PO ≤15 W VI = 27 to 38 V VI = 27 to 38 V, TJ = 25°C VI = 30 to 36 V, TJ = 25°C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25°C IO = 250 to 750 mA, TJ = 25°C TJ = 25°C IO = 5 mA to 1 A VI = 27 to 38 V IO = 5 mA 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 VI = 35 V, TJ = 25°C TJ = 25°C 50 2 28 0.15 2.1 -1.5 170 Test conditions Min. 23 22.8 Typ. 24 24 Max. 25 25.2 480 mV 240 480 mV 240 8 0.5 mA 1 mV/°C µV/VO dB V mΩ A A mA Unit V V
Line regulation
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
Figure 8.
Typical performance
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, IO ≤0.5)
Note:
38/52
The circuit performs well up to 100 KHz.
L78xx - L78xxC
Typical performance
Figure 35. Adjustable output voltage with temperature compensation
VO = VXX (1+R2/R1) + VBE
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 VO.
Figure 36. Light controllers (VOmin = VXX + VBE)
VO falls when the light goes up
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 B C D E G N P R U V 30.10 3.88 10.9 16.9 26.2 4.09 39.5 1.185 0.152 0.96 mm. Min. Typ. 11.85 1.05 1.10 1.70 8.7 20.0 0.429 0.665 1.031 0.161 1.555 0.037 Max. Min. inch. Typ. 0.466 0.041 0.043 0.066 0.342 0.787 Max.
P G
A
D C
U
V
O
N
R
P003C/C
42/52
B
E
L78xx - L78xxC
Package mechanical data
TO-220 (A type) mechanical data
Dim. A b b1 c D E e e1 F H1 J1 L L1 L20 L30 φP Q 3.75 2.65 mm. Min. 4.40 0.61 1.15 0.49 15.25 10.0 2.4 4.95 1.23 6.2 2.40 13.0 3.5 16.4 28.9 3.85 2.95 0.148 0.104 Typ. Max. 4.60 0.88 1.70 0.70 15.75 10.40 2.7 5.15 1.32 6.6 2.72 14.0 3.93 Min. 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 0.646 1.138 0.152 0.116 inch. 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
0015988/N
43/52
Package mechanical data
L78xx - L78xxC
TO-220FP mechanical data
Dim. A B D E F F1 F2 G G1 H L2 L3 L4 L5 L6 L7 DIA. 28.6 9.8 2.9 15.9 9 3 mm. Min. 4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0 16 30.6 10.6 3.6 16.4 9.3 3.2 1.126 0.385 0.114 0.626 0.354 0.118 Typ Max. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 Min. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.142 0.645 0.366 0.126 inch. Typ. Max. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409
7012510A-H
44/52
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.)
0079457/L 46/52
L78xx - L78xxC
Package mechanical data
Table 24.
D2PAK mechanical data
TYPE STD-ST TYPE WOOSEOK-SUBCON. mm. MAX. 4.60 0.23 0.93 1.70 0.60 1.36 9.35 MIN. 4.30 0 0.70 1.17 0.45 1.25 9 7.50 10.40 9.80 7.50 2.54 4.88 15 2.49 2.29 1.27 1.30 0.4 0° 8° 0° 5.28 15.85 2.69 2.79 1.40 1.75 15 2.20 1.79 1 1.20 0.30 3° 2.54 5.08 15.30 15.60 2.60 2.79 1.40 1.60 10.20 0.50 1.30 9.20 TYP. MAX. 4.70 0.20 0.90 1.37 0.60 1.40 9.40
DIM. MIN. A A1 b b2 c c2 D D1 E E1 e e1 H J1 L L1 L2 R V2 4.40 0.03 0.70 1.14 0.45 1.23 8.95 7.50 10 8.50
mm. TYP.
Note:
The D2PAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint.
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Package mechanical data
L78xx - L78xxC
Figure 40. D2PAK footprint recommended data
Table 25.
Footprint data
VALUES mm. A B C D E F G 12.20 9.75 16.90 3.50 1.60 2.54 5.08 inch. 0.480 0.384 0.665 0.138 0.063 0.100 0.200
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L78xx - L78xxC
Package mechanical data
Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 Typ. Max. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 Min. Typ. Max. 7.086 0.519 inch.
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Order code
L78xx - L78xxC
8
Table 26.
Order code
Order code
Packaging
Part numbers
TO-220 (A Type)
D2PAK
TO-220FP
TO-3 L7805T
L7805 L7805C L7852C L7806C L7808C L7885C L7809C L7810C L7812C L7815C L7818C L7820C L7824C
1. Available on request.
L7805CV L7852CV L7806CV L7808CV L7885CV L7809CV L7810CV L7812CV L7815CV L7818CV L7820CV L7824CV
L7805CD2T-TR L7852CD2T-TR(1) L7806CD2T-TR L7808CD2T-TR L7885CD2T-TR
(1)
L7805CP L7852CP(1)
L7805CT L7852CT(1) L7806CT
L7808CP L7885CP
(1)
L7808CT L7885CT(1) L7809CT
L7809CD2T-TR L7810CD2T-TR
(1)
L7809CP
L7812CD2T-TR L7815CD2T-TR L7818CD2T-TR(1) L7820CD2T-TR(1) L7824CD2T-TR
L7812CP L7815CP
L7812CT L7815CT L7818CT
L7820CP(1) L7824CP
L7820CT(1) L7824CT
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L78xx - L78xxC
Revision history
9
Table 27.
Date
Revision history
Revision history
Revision 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. Changes
21-Jun-2004 03-Aug-2006 19-Jan-2007 31-May-2007 29-Aug-2007
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L78xx - L78xxC
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