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| 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 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. 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 3/52 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 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 11 Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150C, VI = 11 V,IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . . 12 Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150C, VI = 14V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . . 13 Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 14 Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 15 Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 16 Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 17 Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 18 Electrical characteristics of L7805C (refer to the test circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 19 Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 20 Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 21 Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150C, VI = 14 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 22 Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150C, VI = 14.5 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . 23 Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 24 Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 25 Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 26 Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 27 Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 28 Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 29 Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) . . . . . . . . 30 D2PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4/52 L78XX - L78XXC Diagram 1 Figure 1. Diagram Block diagram 5/52 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 6/52 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 7/52 Maximum ratings Figure 4. Application circuits L78XX - L78XXC 8/52 L78XX - L78XXC Test circuits 4 Figure 5. Test circuits DC Parameter Figure 6. Load regulation 9/52 Test circuits L78XX - L78XXC Figure 7. Ripple rejection 10/52 L78XX - L78XXC Electrical characteristics 5 Table 4. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 8 to 20 V VI = 7 to 25 V, TJ = 25C VI = 8 to 12 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 8 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 8 to 18 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 11/52 Electrical characteristics Table 5. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp L78XX - L78XXC Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 9 to 21 V VI = 8 to 25 V, TJ = 25C VI = 9 to 13 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 9 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 9 to 19 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 12/52 L78XX - L78XXC Electrical characteristics Table 6. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150C, VI = 14V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1A, PO 15 W VI = 11.5 to 23 V VI = 10.5 to 25 V, TJ = 25C VI = 11 to 17 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 11.5 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 11.5 to 21.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 13/52 Electrical characteristics L78XX - L78XXC Table 7. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 15.5 to 27 V VI = 14.5 to 30 V, TJ = 25C VI = 16 to 22 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 15 to 30 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 15 to 25 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 14/52 L78XX - L78XXC Electrical characteristics Table 8. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 18.5 to 30 V VI = 17.5 to 30 V, TJ = 25C VI = 20 to 26 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 18.5 to 30 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 18.5 to 28.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 15/52 Electrical characteristics L78XX - L78XXC Table 9. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 22 to 33 V VI = 21 to 33 V, TJ = 25C VI = 24 to 30 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 22 to 33 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 22 to 32 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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. 16/52 L78XX - L78XXC Electrical characteristics Table 10. Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 24 to 35 V VI = 22.5 to 35 V, TJ = 25C VI = 26 to 32 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 24 to 35 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 24 to 35 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 28 to 38 V VI = 27 to 38 V, TJ = 25C VI = 30 to 36 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 28 to 38 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 28 to 38 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7805C (refer to the test circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 7 to 20 V VI = 7 to 25 V, TJ = 25C VI = 8 to 12 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 7 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 8 to 18 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 8 to 20 V VI = 7 to 25 V, TJ = 25C VI = 8 to 12 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 7 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 8 to 18 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 8 to 21 V VI = 8 to 25 V, TJ = 25C VI = 9 to 13 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 8 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 9 to 19 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150C, VI = 14 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 10.5 to 25 V VI = 10.5 to 25 V, TJ = 25C VI = 11 to 17 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 10.5 to 25 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 11.5 to 21.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150C, VI = 14.5 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 11 to 26 V VI = 11 to 27 V, TJ = 25C VI = 11.5 to 17.5 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 11 to 27 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 12 to 22V, f = 120Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 11.5 to 26 V VI = 11.5 to 26 V, TJ = 25C VI = 12 to 18 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 11.5 to 26 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 12 to 23 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 12.5 to 26 V VI = 12.5 to 26 V, TJ = 25C VI = 13.5 to 19 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 12.5 to 26 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 13 to 23 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 14.5 to 27 V VI = 14.5 to 30 V, TJ = 25C VI = 16 to 22 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 14.5 to 30 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 15 to 25 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 17.5 to 30 V VI = 17.5 to 30 V, TJ = 25C VI = 20 to 26 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1A VI = 17.5 to 30 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 18.5 to 28.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 21 to 33 V VI = 21 to 33 V, TJ = 25C VI = 24 to 30 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 21 to 33 V IO = 5 mA B = 10 Hz to 100 KHz, TJ = 25C VI = 22 to 32 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 23 to 35 V VI = 22.5 to 35 V, TJ = 25C VI = 26 to 32 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 23 to 35 V IO = 5 mA B =10 Hz to 100 KHz, TJ = 25C VI = 24 to 35 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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 VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp L78XX - L78XXC Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified) Parameter Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, PO 15 W VI = 27 to 38 V VI = 27 to 38 V, TJ = 25C VI = 30 to 36 V, TJ = 25C 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 = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 27 to 38 V IO = 5 mA B = 10 Hz to 100 KHz, TJ = 25C VI = 28 to 38 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 KHz VI = 35 V, TJ = 25C TJ = 25C 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 V/VO dB V m 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/Q1) 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(R) 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 P 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. 47/52 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 48/52 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. 49/52 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) L7805CP L7852CP (1) L7805CT L7852CT(1) L7806CT L7806CD2T-TR L7808CD2T-TR L7885CD2T-TR(1) L7809CD2T-TR L7810CD2T-TR (1) L7808CP L7885CP(1) L7809CP L7808CT L7885CT(1) L7809CT L7812CD2T-TR L7815CD2T-TR L7818CD2T-TR (1) L7812CP L7815CP L7812CT L7815CT L7818CT L7820CD2T-TR(1) L7824CD2T-TR L7820CP(1) L7824CP L7820CT(1) L7824CT 50/52 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 51/52 L78XX - L78XXC Please Read Carefully: Information in this document is provided solely in connection with ST products. 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