L78xx - L78xxC L78xxAB - L78xxAC Positive voltage regulators Features Output current up to 1.5 A Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V Thermal overload protection Short circuit protection Output transition SOA protection 2 % output voltage tolerance (A version) Guaranteed in extended temperature range (A version) TO-220 TO-220FP Description The L78xx series of three-terminal positive regulators is available in TO-220, TO-220FP, TO3, DPAK and DPAK 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. Table 1. TO-3 DPAK DPAK Device summary Part numbers L7805 L7806AC L7809AB L7815AB L7805C L7808C L7809AC L7815AC L7805AB L7808AB L7812C L7818C L7805AC L7808AC L7812AB L7824C L7806C L7885C L7812AC L7824AB L7806AB L7809C L7815C L7824AC January 2010 Doc ID 2143 Rev 20 1/58 www.st.com 58 Contents L78xx, L78xxC, L78xxAB, L78xxAC Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.1 Design consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 9 Order codes 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 2/58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC List of tables 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. Table 28. Table 29. Table 30. Table 31. Table 32. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics of L7805 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Electrical characteristics of L7805A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical characteristics of L7806A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Electrical characteristics of L7808A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Electrical characteristics of L7809A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Electrical characteristics of L7812A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Electrical characteristics of L7815A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Electrical characteristics of L7824A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Electrical characteristics of L7805C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Electrical characteristics of L7806C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Electrical characteristics of L7808C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Electrical characteristics of L7885C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Electrical characteristics of L7809C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Electrical characteristics of L7810C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Electrical characteristics of L7812C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Electrical characteristics of L7815C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Electrical characteristics of L7818C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Electrical characteristics of L7820C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Electrical characteristics of L7824C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 TO-220FP mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 TO-3 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 DPAK footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Doc ID 2143 Rev 20 3/58 List of figures L78xx, L78xxC, L78xxAB, L78xxAC 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. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Figure 49. Figure 50. 4/58 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Ripple rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Fixed output regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Adjustable output regulator (7 to 30 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 0.5 to 10 V regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Split power supply ( 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 High input and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Remote shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Power AM modulator (unity voltage gain, IO 0.5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 37 Light controllers (VO(min) = VXX + VBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 38 Dropout voltage vs. junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Peak output current vs. input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Output voltage vs. junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Output impedance vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Quiescent current vs. junction temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Quiescent current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Drawing dimension TO-220 (type STD-ST Dual Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Drawing dimension TO-220 (type STD-ST Single Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . 43 Drawing dimension tube for TO-220 Dual Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Drawing dimension tube for TO-220 Single Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . 44 Drawing dimension TO-220FP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Drawing dimension TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Drawing dimension DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Drawing dimension tape and reel for DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Drawing dimension DPAK (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Figure 51. Figure 52. Figure 53. List of figures Drawing dimension DPAK (type WOOSEOK-Subcon.). . . . . . . . . . . . . . . . . . . . . . . . . . . 52 DPAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Drawing dimension tape and reel for DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Doc ID 2143 Rev 20 5/58 Diagram L78xx, L78xxC, L78xxAB, L78xxAC 1 Diagram Figure 1. Block diagram 6/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC 2 Pin configuration Figure 2. Pin connections (top view) Pin configuration TO-220 DPAK (Any Type) Figure 3. TO-220FP DPAK TO-3 Schematic diagram Doc ID 2143 Rev 20 7/58 Maximum ratings L78xx, L78xxC, L78xxAB, L78xxAC 3 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value for VO= 5 to 18 V 35 for VO= 20, 24 V 40 Unit VI DC input voltage IO Output current Internally limited PD Power dissipation Internally limited TSTG V Storage temperature range -65 to 150 for L78xx TOP C -55 to 150 Operating junction temperature range for L78xxC, L78xxAC 0 to 125 for L78xxAB C -40 to 125 Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 3. Thermal data Symbol Parameter RthJC Thermal resistance junction-case RthJA Thermal resistance junction-ambient Figure 4. 8/58 DPAK DPAK TO-220 TO-220FP TO-3 Unit 3 8 5 5 4 C/W 62.5 100 50 60 35 C/W Application circuits Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC 4 Test circuits Figure 5. DC parameter Figure 6. Load regulation Figure 7. Ripple rejection Test circuits Doc ID 2143 Rev 20 9/58 Electrical characteristics 5 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = -55 to 150 C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 4. Symbol Electrical characteristics of L7805 Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 4.8 5 5.2 V VO Output voltage IO = 5 mA to 1 A, VI = 8 to 20 V 4.65 5 5.35 V VO(1) VI = 7 to 25 V, TJ = 25C 3 50 Line regulation VI = 8 to 12 V, TJ = 25C 1 25 VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change mV IO = 5 mA to 1.5 A, TJ = 25C 100 IO = 250 to 750 mA, TJ = 25C 25 TJ = 25C 6 mV IO = 5 mA to 1 A 0.5 VI = 8 to 25 V 0.8 mA Output voltage drift IO = 5 mA Output noise voltage B =10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 8 to 18 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 RO Output resistance f = 1 kHz 17 Isc Short circuit current VI = 35 V, TJ = 25C Iscp Short circuit peak current TJ = 25C eN SVR mA 0.6 mV/C 40 68 1.3 dB 2.5 Doc ID 2143 Rev 20 V m 0.75 1.2 A 2.2 3.3 A 1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 10/58 V/VO L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics VI = 10 V, IO = 1 A, TJ = 0 to 125 C (L7805AC), TJ = -40 to 125 C (L7805AB), unless otherwise specified. Table 5. Symbol Electrical characteristics of L7805A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 4.9 5 5.1 V VO Output voltage IO = 5 mA to 1 A, VI = 7.5 to 18 V 4.8 5 5.2 V VO Output voltage IO = 1 A, VI = 18 to 20 V, TJ = 25C 4.8 5 5.2 V VI = 7.5 to 25 V, IO = 500 mA 7 50 mV VI = 8 to 12 V 10 50 mV VI = 8 to 12 V, TJ = 25C 2 25 mV VI = 7.3 to 20 V, TJ = 25C 7 50 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 8 50 V 4.3 6 mA 6 mA VI = 8 to 23 V, IO = 500 mA 0.8 mA VI = 7.5 to 20 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq SVR Line regulation Load regulation Quiescent current Quiescent current change TJ = 25C Supply voltage rejection VI = 8 to 18 V, f = 120 Hz, IO = 500 mA 68 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B =10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 17 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -1.1 mV/C VO/T Output voltage drift 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. Doc ID 2143 Rev 20 11/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC VI = 11 V, IO = 1 A, TJ = 0 to 125 C (L7806AC), TJ = -40 to 125 C (L7806AB), unless otherwise specified. Table 6. Symbol Electrical characteristics of L7806A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 5.88 6 6.12 V VO Output voltage IO = 5 mA to 1 A, VI = 8.6 to 19 V 5.76 6 6.24 V VO Output voltage IO = 1 A, VI = 19 to 21 V, TJ = 25C 5.76 6 6.24 V VI = 8.6 to 25 V, IO = 500 mA 9 60 mV VI = 9 to 13 V 11 60 mV VI = 9 to 13 V, TJ = 25C 3 30 mV VI = 8.3 to 21 V, TJ = 25C 9 60 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.3 6 mA 6 mA VI = 9 to 24 V, IO = 500 mA 0.8 mA VI = 8.6 to 21 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq SVR Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 9 to 19 V, f = 120 Hz, IO = 500 mA 65 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B =10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 17 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -0.8 mV/C VO/T Output voltage drift 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. 12/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics VI = 14 V, IO = 1 A, TJ = 0 to 125 C (L7808AC), TJ = -40 to 125 C (L7808AB), unless otherwise specified. Table 7. Symbol Electrical characteristics of L7808A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 7.84 8 8.16 V VO Output voltage IO = 5 mA to 1 A, VI = 10.6 to 21 V 7.7 8 8.3 V VO Output voltage IO = 1 A, VI = 21 to 23 V, TJ = 25C 7.7 8 8.3 V VI = 10.6 to 25 V, IO = 500 mA 12 80 mV VI = 11 to 17 V 15 80 mV VI = 11 to 17 V, TJ = 25C 5 40 mV VI = 10.4 to 23 V, TJ = 25C 12 80 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.3 6 mA 6 mA VI = 11 to 23 V, IO = 500 mA 0.8 mA VI = 10.6 to 23 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz, IO = 500 mA 62 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B =10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 18 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -0.8 mV/C SVR VO/T Output voltage drift 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. Doc ID 2143 Rev 20 13/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC VI = 15 V, IO = 1 A, TJ = 0 to 125 C (L7809AC), TJ = -40 to 125 C (L7809AB), unless otherwise specified. Table 8. Symbol Electrical characteristics of L7809A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 8.82 9 9.18 V VO Output voltage IO = 5 mA to 1 A, VI = 10.6 to 22 V 8.65 9 9.35 V VO Output voltage IO = 1 A, VI = 22 to 24 V, TJ = 25C 8.65 9 9.35 V VI = 10.6 to 25 V, IO = 500 mA 12 90 mV VI = 11 to 17 V 15 90 mV VI = 11 to 17 V, TJ = 25C 5 45 mV VI = 10.4 to 23 V, TJ = 25C 12 90 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.3 6 mA 6 mA VI = 11 to 25 V, IO = 500 mA 0.8 mA VI = 10.6 to 23 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz, IO = 500 mA 61 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B =10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 18 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -0.8 mV/C SVR VO/T Output voltage drift 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. 14/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics VI = 19 V, IO = 1 A, TJ = 0 to 125 C (L7812AC), TJ = -40 to 125 C (L7812AB), unless otherwise specified. Table 9. Symbol Electrical characteristics of L7812A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 11.75 12 12.25 V VO Output voltage IO = 5 mA to 1 A, VI = 14.8 to 25 V 11.5 12 12.5 V VO Output voltage IO = 1 A, VI = 25 to 27 V, TJ = 25C 11.5 12 12.5 V VI = 14.8 to 30 V, IO = 500 mA 13 120 mV VI = 16 to 12 V 16 120 mV VI = 16 to 12 V, TJ = 25C 6 60 mV VI = 14.5 to 27 V, TJ = 25C 13 120 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.4 6 mA 6 mA VI = 15 to 30 V, IO = 500 mA 0.8 mA VI = 14.8 to 27 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq SVR Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 15 to 25 V, f = 120 Hz, IO = 500 mA 60 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B = 10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 18 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -1 mV/C VO/T Output voltage drift 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. Doc ID 2143 Rev 20 15/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC VI = 23 V, IO = 1 A, TJ = 0 to 125 C (L7815AC), TJ = -40 to 125 C (L7815AB), unless otherwise specified. Table 10. Symbol Electrical characteristics of L7815A Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 14.7 15 15.3 V VO Output voltage IO = 5 mA to 1 A, VI = 17.9 to 28 V 14.4 15 15.6 V VO Output voltage IO = 1 A, VI = 28 to 30 V, TJ = 25C 14.4 15 15.6 V VI = 17.9 to 30 V, IO = 500 mA 13 150 mV VI = 20 to 26 V 16 150 mV VI = 20 to 26 V, TJ = 25C 6 75 mV VI = 17.5 to 30 V, TJ = 25C 13 150 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.4 6 mA 6 mA VI = 17.5 to 30 V, IO = 500 mA 0.8 mA VI = 17.5 to 30 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 18.5 to 28.5 V, f = 120 Hz, IO = 500 mA 58 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B = 10Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 19 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -1 mV/C SVR VO/T Output voltage drift 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. 16/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics VI = 33 V, IO = 1 A, TJ = 0 to 125 C (L7824AC), TJ = -40 to 125 C (L7824AB), unless otherwise specified. Table 11. Symbol Electrical characteristics of L7824A Parameter Test conditions Min. Typ. Max. Unit 23.5 24 24.5 V VO Output voltage TJ = 25C VO Output voltage IO = 5 mA to 1 A, VI = 27.3 to 37 V 23 24 25 V VO Output voltage IO = 1 A, VI = 37 to 38 V, TJ = 25C 23 24 25 V VI = 27 to 38 V, IO = 500 mA 31 240 mV VI = 30 to 36 V 35 200 mV VI = 30 to 36 V, TJ = 25C 14 120 mV VI = 26.7 to 38 V, TJ = 25C 31 240 mV IO = 5 mA to 1 A 25 100 mV IO = 5 mA to 1.5 A, TJ = 25C 30 100 V IO = 250 to 750 mA 10 50 V TJ = 25C 4.6 6 mA 6 mA VI = 27.3 to 38 V, IO = 500 mA 0.8 mA VI = 27.3 to 38 V, TJ = 25C 0.8 mA IO = 5 mA to 1 A 0.5 mA VO (1) VO (1) Iq Iq SVR Line regulation Load regulation Quiescent current Quiescent current change Supply voltage rejection VI = 28 to 38 V, f = 120 Hz, IO = 500 mA 54 dB Vd Dropout voltage IO = 1 A, TJ = 25C 2 V eN Output noise voltage TA = 25C, B = 10 Hz to 100 kHz 10 V/VO RO Output resistance f = 1 kHz 20 m Isc Short circuit current VI = 35 V, TA = 25C 0.2 A Iscp Short circuit peak current TJ = 25C 2.2 A -1.5 mV/C VO/T Output voltage drift 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. Doc ID 2143 Rev 20 17/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 12. Symbol Electrical characteristics of L7805C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 4.8 5 5.2 V VO Output voltage IO = 5 mA to 1 A, VI = 7 to 18 V 4.75 5 5.25 V VO Output voltage IO = 1 A, VI = 18 to 20V, TJ = 25C 4.75 5 5.25 V VO(1) VI = 7 to 25 V, TJ = 25C 3 100 Line regulation VI = 8 to 12 V, TJ = 25C 1 50 VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change mV IO = 5 mA to 1.5 A, TJ = 25C 100 IO = 250 to 750 mA, TJ = 25C 50 TJ = 25C 8 mV IO = 5 mA to 1 A 0.5 VI = 7 to 23 V 0.8 mA mA Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 8 to 18 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 17 m Isc Short circuit current VI = 35 V, TJ = 25C 0.75 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR -1.1 mV/C 40 V/VO 62 dB 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. 18/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = 0 to 125 C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 13. Symbol Electrical characteristics of L7806C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 5.75 6 6.25 V VO Output voltage IO = 5 mA to 1 A, VI = 8 to 19 V 5.7 6 6.3 V VO Output voltage IO = 1 A, VI = 19 to 21 V, TJ = 25C 5.7 6 6.3 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 8 to 25 V, TJ = 25C 120 VI = 9 to 13 V, TJ = 25C 60 IO = 5 mA to 1.5 A, TJ = 25C 120 IO = 250 to 750 mA, TJ = 25C 60 TJ = 25C 8 mV mV IO = 5 mA to 1 A 0.5 VI = 8 to 24 V 1.3 mA mA Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 9 to 19 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 19 m Isc Short circuit current VI = 35 V, TJ = 25C 0.55 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR -0.8 mV/C 45 V/VO 59 dB 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. Doc ID 2143 Rev 20 19/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 14 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 14. Symbol Electrical characteristics of L7808C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 7.7 8 8.3 V VO Output voltage IO = 5 mA to 1 A, VI = 10.5 to 21 V 7.6 8 8.4 V VO Output voltage IO = 1 A, VI = 21 to 25 V, TJ = 25C 7.6 8 8.4 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 10.5 to 25 V, TJ = 25C 160 VI = 11 to 17 V, TJ = 25C 80 IO = 5 mA to 1.5 A, TJ = 25C 160 IO = 250 to 750 mA, TJ = 25C 80 TJ = 25C 8 mV mV IO = 5 mA to 1 A 0.5 VI = 10.5 to 25 V 1 mA mA Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 11.5 to 21.5 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 16 m Isc Short circuit current VI = 35 V, TJ = 25C 0.45 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR -0.8 mV/C 52 V/VO 56 dB 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. 20/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = 0 to 125 C, VI = 14.5 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 15. Symbol Electrical characteristics of L7885C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 8.2 8.5 8.8 V VO Output voltage IO = 5 mA to 1 A, VI = 11 to 21.5 V 8.1 8.5 8.9 V VO Output voltage IO = 1 A, VI = 21.5 to 26 V, TJ = 25C 8.1 8.5 8.9 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 11 to 27 V, TJ = 25C 160 VI = 11.5 to 17.5 V, TJ = 25C 80 IO = 5 mA to 1.5 A, TJ = 25C 160 IO = 250 to 750 mA, TJ = 25C 80 TJ = 25C 8 mV mV IO = 5 mA to 1 A mA 0.5 mA VI = 11 to 26 V 1 Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 12 to 22 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 16 m Isc Short circuit current VI = 35 V, TJ = 25C 0.45 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR -0.8 mV/C 55 V/VO 56 dB 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. Doc ID 2143 Rev 20 21/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 16. Symbol Electrical characteristics of L7809C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 8.64 9 9.36 V VO Output voltage IO = 5 mA to 1 A, VI = 11.5 to 22 V 8.55 9 9.45 V VO Output voltage IO = 1 A, VI = 22 to 26 V, TJ = 25C 8.55 9 9.45 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 11.5 to 26 V, TJ = 25C 180 VI = 12 to 18 V, TJ = 25C 90 IO = 5 mA to 1.5 A, TJ = 25C 180 IO = 250 to 750 mA, TJ = 25C 90 TJ = 25C 8 mV mV IO = 5 mA to 1 A 0.5 VI = 11.5 to 26 V 1 mA mA Output voltage drift IO = 5 mA -1 mV/C Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C 70 V/VO Supply voltage rejection VI = 12 to 23 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 17 m Isc Short circuit current VI = 35 V, TJ = 25C 0.40 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR 55 dB 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. 22/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = 0 to 125 C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 17. Symbol Electrical characteristics of L7810C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 9.6 10 10.4 V VO Output voltage IO = 5 mA to 1 A, VI = 12.5 to 23 V 9.5 10 10.5 V VO Output voltage IO = 1 A, VI = 23 to 26 V, TJ = 25C 9.5 10 10.5 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 12.5 to 26 V, TJ = 25C 200 VI = 13.5 to 19 V, TJ = 25C 100 IO = 5 mA to 1.5 A, TJ = 25C 200 IO = 250 to 750 mA, TJ = 25C 100 mV mV TJ = 25C 8 IO = 5 mA to 1 A 0.5 VI = 12.5 to 26 V 1 mA mA Output voltage drift IO = 5 mA -1 mV/C Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C 70 V/VO Supply voltage rejection VI = 13 to 23 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 17 m Isc Short circuit current VI = 35 V, TJ = 25C 0.40 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR 55 dB 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. Doc ID 2143 Rev 20 23/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 18. Symbol Electrical characteristics of L7812C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 11.5 12 12.5 V VO Output voltage IO = 5 mA to 1 A, VI = 14.5 to 25 V 11.4 12 12.6 V VO Output voltage IO = 1 A, VI = 25 to 27 V, TJ = 25C 11.4 12 12.6 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 14.5 to 30 V, TJ = 25C 240 VI = 16 to 22 V, TJ = 25C 120 IO = 5 mA to 1.5 A, TJ = 25C 240 IO = 250 to 750 mA, TJ = 25C 120 mV mV TJ = 25C 8 IO = 5 mA to 1 A 0.5 VI = 14.5 to 30 V 1 mA mA Output voltage drift IO = 5 mA -1 mV/C Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C 75 V/VO Supply voltage rejection VI = 15 to 25 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 18 m Isc Short circuit current VI = 35 V, TJ = 25C 0.35 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR 55 dB 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. 24/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = 0 to 125 C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 19. Symbol Electrical characteristics of L7815C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 14.5 15 15.6 V VO Output voltage IO = 5 mA to 1 A, VI = 17.5 to 28 V 14.25 15 15.75 V VO Output voltage IO = 1 A, VI = 28 to 30 V, TJ = 25C 14.25 15 15.75 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 17.5 to 30 V, TJ = 25C 300 VI = 20 to 26 V, TJ = 25C 150 IO = 5 mA to 1.5 A, TJ = 25C 300 IO = 250 to 750 mA, TJ = 25C 150 mV mV TJ = 25C 8 IO = 5 mA to 1A 0.5 VI = 17.5 to 30 V 1 mA mA Output voltage drift IO = 5 mA -1 mV/C Output noise voltage B = 10 Hz to 100kHz, TJ = 25C 90 V/VO Supply voltage rejection VI = 18.5 to 28.5 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 19 m Isc Short circuit current VI = 35 V, TJ = 25C 0.23 A Iscp Short circuit peak current TJ = 25C 2.2 A eN SVR 54 dB 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. Doc ID 2143 Rev 20 25/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 20. Symbol Electrical characteristics of L7818C Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25C 17.3 18 18.7 V VO Output voltage IO = 5 mA to 1 A, VI = 21 to 31 V 17.1 18 18.9 V VO Output voltage IO = 1 A, VI = 31 to 33 V, TJ = 25C 17.1 18 18.9 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 21 to 33 V, TJ = 25C 360 VI = 24 to 30 V, TJ = 25C 180 IO = 5 mA to 1.5 A, TJ = 25C 360 IO = 250 to 750 mA, TJ = 25C 180 mV mV TJ = 25C 8 IO = 5 mA to 1 A mA 0.5 mA VI = 21 to 33 V 1 Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 22 to 32 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 22 m Isc Short circuit current VI = 35 V, TJ = 25C 0.20 A Iscp Short circuit peak current TJ = 25C 2.1 A eN SVR -1 mV/C 110 V/VO 53 dB 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. 26/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Refer to the test circuits, TJ = 0 to 125 C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 21. Symbol Electrical characteristics of L7820C Parameter Test conditions Min. Typ. Max. Unit 19.2 20 20.8 V VO Output voltage TJ = 25C VO Output voltage IO = 5 mA to 1 A, VI = 23 to 33 V 19 20 21 V VO Output voltage IO = 1 A, VI = 33 to 35 V, TJ = 25C 19 20 21 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 22.5 to 35 V, TJ = 25C 400 VI = 26 to 32 V, TJ = 25C 200 IO = 5 mA to 1.5 A, TJ = 25C 400 IO = 250 to 750 mA, TJ = 25C 200 mV mV TJ = 25C 8 IO = 5 mA to 1 A mA 0.5 mA VI = 23 to 35 V 1 Output voltage drift IO = 5 mA Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C Supply voltage rejection VI = 24 to 35 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 24 m Isc Short circuit current VI = 35 V, TJ = 25C 0.18 A Iscp Short circuit peak current TJ = 25C 2.1 A eN SVR -1 mV/C 150 V/VO 52 dB 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. Doc ID 2143 Rev 20 27/58 Electrical characteristics L78xx, L78xxC, L78xxAB, L78xxAC Refer to the test circuits, TJ = 0 to 125 C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 22. Symbol Electrical characteristics of L7824C Parameter Test conditions Min. Typ. Max. Unit 23 24 25 V VO Output voltage TJ = 25C VO Output voltage IO = 5 mA to 1 A, VI = 27 to 37 V 22.8 24 25.2 V VO Output voltage IO = 1 A, VI = 37 to 38 V, TJ = 25C 22.8 24 25.2 V VO(1) Line regulation VO(1) Load regulation Id Id VO/T Quiescent current Quiescent current change VI = 27 to 38 V, TJ = 25C 480 VI = 30 to 36 V, TJ = 25C 240 IO = 5 mA to 1.5 A, TJ = 25C 480 IO = 250 to 750 mA, TJ = 25C 240 mV mV TJ = 25C 8 IO = 5 mA to 1 A mA 0.5 mA VI = 27 to 38 V 1 Output voltage drift IO = 5 mA -1.5 mV/C Output noise voltage B = 10 Hz to 100 kHz, TJ = 25C 170 V/VO Supply voltage rejection VI = 28 to 38 V, f = 120 Hz Vd Dropout voltage IO = 1 A, TJ = 25C 2 V RO Output resistance f = 1 kHz 28 m Isc Short circuit current VI = 35 V, TJ = 25C 0.15 A Iscp Short circuit peak current TJ = 25C 2.1 A eN SVR 50 dB 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. 28/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Application information 6 Application information 6.1 Design consideration The L78xx Series of fixed voltage regulators are designed with thermal overload protection that shuts down the circuit when subjected to an excessive power overload condition, internal short-circuit protection that limits the maximum current the circuit will pass, and output transistor safe-area compensation that reduces the output short-circuit current as the voltage across the pass transistor is increased. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with capacitor if the regulator is connected to the power supply filter with long lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33 F or larger tantalum, mylar or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtained with the arrangement is 2 V greater than the regulator voltage. The circuit of figure 6 can be modified to provide supply protection against short circuit by adding a short circuit sense resistor, RSC, and an additional PNP transistor. The current sensing PNP must be able to handle the short circuit current of the three terminal regulator Therefore a four ampere plastic power transistor is specified. Figure 8. DC parameter IO = VXX/R1+Id Doc ID 2143 Rev 20 29/58 Application information Figure 9. L78xx, L78xxC, L78xxAB, L78xxAC DC parameter VO = 7 to 20V VI - VO 2V Figure 10. DC parameter VBEQ1 R1 = ______________ IREQ-(IQ1/Q1) VBEQ1 IO = IREG + Q1 (IREG ______) R1 Figure 11. DC parameter 30/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Application information Figure 12. 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. Figure 13. Current regulator IO = VXX/R1+Id Figure 14. Circuit for increasing output voltage IR1 5 Id VO = VXX(1+R2/R1)+IdR2 Doc ID 2143 Rev 20 31/58 Application information L78xx, L78xxC, L78xxAB, L78xxAC Figure 15. Adjustable output regulator (7 to 30 V) Figure 16. 0.5 to 10 V regulator VO=VXXR4/R1 Figure 17. High current voltage regulator VBEQ1 R1 = ______________ IREQ-(IQ1/bQ1) VBEQ1 IO = IREG + Q1 (IREG ______) R1 32/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Application information Figure 18. High output current with short circuit protection RSC=VBEQ2/ISC Figure 19. Tracking voltage regulator Doc ID 2143 Rev 20 33/58 Application information L78xx, L78xxC, L78xxAB, L78xxAC Figure 20. Split power supply ( 15 V - 1 A) * Against potential latch-up problems. Figure 21. Negative output voltage circuit Figure 22. Switching regulator 34/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Application information Figure 23. High input voltage circuit VIN = VI - (VZ + VBE) Figure 24. High input voltage circuit Figure 25. High output voltage regulator Doc ID 2143 Rev 20 35/58 Application information L78xx, L78xxC, L78xxAB, L78xxAC Figure 26. High input and output voltage VO = VXX + VZ1 Figure 27. Reducing power dissipation with dropping resistor VI(min)-VXX-VDROP(max) R = ____________________ IO(max)+Id(max) Figure 28. Remote shutdown 36/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Application information Figure 29. Power AM modulator (unity voltage gain, IO 0.5) Note: The circuit performs well up to 100 kHz. Figure 30. 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. Doc ID 2143 Rev 20 37/58 Application information L78xx, L78xxC, L78xxAB, L78xxAC Figure 31. Light controllers (VO(min) = VXX + VBE) VO rises when the light goes up VO falls when the light goes up Figure 32. Protection against input short-circuit with high capacitance loads Note: 38/58 Application with high capacitance loads and an output voltage greater than 6 volts need an external diode (see Figure 27 on page 36) 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. Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC 7 Typical performance Typical performance Figure 33. Dropout voltage vs. junction temperature Figure 34. Peak output current vs. input/output differential voltage Figure 35. Supply voltage rejection vs. frequency Figure 36. Output voltage vs. junction temperature Figure 37. Output impedance vs. frequency Figure 38. Quiescent current vs. junction temp. Doc ID 2143 Rev 20 39/58 Typical performance L78xx, L78xxC, L78xxAB, L78xxAC Figure 39. Load transient response Figure 40. Line transient response Figure 41. Quiescent current vs. input voltage 40/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC 8 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Table 23. TO-220 mechanical data Type STD - ST Dual Gauge Type STD - ST Single Gauge mm. mm. Dim. Min. Typ. Max. Min. Typ. Max. A 4.40 4.60 4.40 4.60 b 0.61 0.88 0.61 0.88 b1 1.14 1.70 1.14 1.70 c 0.48 0.70 0.48 0.70 D 15.25 15.75 15.25 15.75 D1 1.27 E 10.00 10.40 10.00 10.40 e 2.40 2.70 2.40 2.70 e1 4.95 5.15 4.95 5.15 F 1.23 1.32 0.51 0.60 H1 6.20 6.60 6.20 6.60 J1 2.40 2.72 2.40 2.72 L 13.00 14.00 13.00 14.00 L1 3.50 3.93 3.50 3.93 L20 16.40 16.40 L30 28.90 28.90 P 3.75 3.85 3.75 3.85 Q 2.65 2.95 2.65 2.95 In spite of some difference in tolerances, the packages are compatible. Doc ID 2143 Rev 20 41/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 42. Drawing dimension TO-220 (type STD-ST Dual Gauge) 0015988_S 42/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Package mechanical data Figure 43. Drawing dimension TO-220 (type STD-ST Single Gauge) 8174627_B Doc ID 2143 Rev 20 43/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 44. Drawing dimension tube for TO-220 Dual Gauge (mm.) Figure 45. Drawing dimension tube for TO-220 Single Gauge (mm.) 44/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Package mechanical data Figure 46. Drawing dimension TO-220FP 7012510A-H Doc ID 2143 Rev 20 45/58 Package mechanical data Table 24. L78xx, L78xxC, L78xxAB, L78xxAC TO-220FP mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 4.40 4.60 0.173 0.181 B 2.5 2.7 0.098 0.106 D 2.5 2.75 0.098 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.030 0.039 F1 1.15 1.50 0.045 0.059 F2 1.15 1.50 0.045 0.059 G 4.95 5.2 0.194 0.204 G1 2.4 2.7 0.094 0.106 H 10.0 10.40 0.393 0.409 L2 16 0.630 L3 28.6 30.6 1.126 1.204 L4 9.8 10.6 0.385 0.417 L5 2.9 3.6 0.114 0.142 L6 15.9 16.4 0.626 0.645 L7 9 9.3 0.354 0.366 DIA. 3 3.2 0.118 0.126 46/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Package mechanical data Figure 47. Drawing dimension TO-3 D A P C O N B V U E G R P003C/C Table 25. TO-3 mechanical data mm. inch. Dim. Min. A B Typ. Max. Min. 11.85 0.96 1.05 Typ. Max. 0.466 1.10 0.037 0.041 0.043 C 1.70 0.066 D 8.7 0.342 E 20.0 0.787 G 10.9 0.429 N 16.9 0.665 P R 26.2 3.88 4.09 U V 1.031 0.152 0.161 39.5 30.10 1.555 1.185 Doc ID 2143 Rev 20 47/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 48. Drawing dimension DPAK 0068772-F 48/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Table 26. Package mechanical data DPAK mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.64 0.9 0.025 0.035 b4 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.023 C2 0.48 0.6 0.019 0.023 D 6 6.2 0.236 0.244 D1 E 5.1 6.4 0.200 6.6 0.252 0.260 E1 4.7 0.185 e 2.28 0.090 e1 4.4 4.6 0.173 0.181 H 9.35 10.1 0.368 0.397 L 1 0.039 (L1) 2.8 0.110 L2 0.8 0.031 L4 0.6 R V2 1 0.023 0.2 0 0.039 0.008 8 0 Doc ID 2143 Rev 20 8 49/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 49. Drawing dimension tape and reel for DPAK Table 27. Tape and reel DPAK mechanical data mm. inch. Dim. Min. Typ. A Min. Typ. 330 13.0 13.2 Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 50/58 Max. 0.504 0.512 22.4 0.519 0.882 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Package mechanical data Figure 50. Drawing dimension DPAK (type STD-ST) 0079457/L Doc ID 2143 Rev 20 51/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 51. Drawing dimension DPAK (type WOOSEOK-Subcon.) 0079457/L 52/58 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Table 28. DPAK mechanical data Dim. Min. TYPE STD-ST TYPE WOOSEOK-Subcon. mm. mm. Typ. Max. Min. Typ. Max. A 4.40 4.60 4.30 4.70 A1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 D 8.95 9.35 9 9.20 9.40 D1 7.50 E 10 E1 8.50 e 7.50 10.40 9.80 10.20 7.50 2.54 2.54 e1 4.88 5.28 H 15 15.85 15 J1 2.49 2.69 2.20 2.60 L 2.29 2.79 1.79 2.79 L1 1.27 1.40 1 1.40 L2 1.30 1.75 1.20 1.60 R V2 Note: Package mechanical data 5.08 0.4 0 15.30 15.60 0.30 8 0 3 The DPAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. Doc ID 2143 Rev 20 53/58 Package mechanical data L78xx, L78xxC, L78xxAB, L78xxAC Figure 52. DPAK footprint recommended data Table 29. DPAK footprint data Values 54/58 Dim. mm. inch. A 12.20 0.480 B 9.75 0.384 C 16.90 0.665 D 3.50 0.138 E 1.60 0.063 F 2.54 0.100 G 5.08 0.200 Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC Table 30. Package mechanical data Tape and reel DPAK mechanical data mm. inch. Dim. Min. Typ. A Max. Min. Typ. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Max. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 Figure 53. Drawing dimension tape and reel for DPAK Doc ID 2143 Rev 20 55/58 Order codes L78xx, L78xxC, L78xxAB, L78xxAC 9 Order codes Table 31. Order codes Order codes Part numbers TO-220 DPAK DPAK TO-220FP L7805 L7805C L7805CV L7805AB L7805CDT-TR TO-3 Output voltages L7805T 5V L7805CT 5V L7805CD2T-TR L7805CP L7805ABV L7805ABP L7805ABP 5V L7805AC L7805ACV L7805ACP L7805ACP 5V L7806C L7806CV L7806CD2T-TR L7806AB L7806ABV L7806ABD2T-TR 6V L7806AC L7806ACV L7806ACD2T-TR 6V L7808C L7808CV L7808CD2T-TR L7808AB L7808ABV L7808ABD2T-TR L7808AC L7808ACV L7808ACD2T-TR L7885CD2T-TR (1) L7806CT L7808CP 6V 8V 8V 8V L7885CP (1) L7885CT (1) 8.5 V L7885C L7885CV L7809C L7809CV L7809CD2T-TR L7809AB L7809ABV L7809ABD2T-TR 9V L7809AC L7809ACV L7809ACD2T-TR 9V L7812C L7812CV L7812CD2T-TR L7812AB L7812ABV L7812ABD2T-TR 12 V L7812AC L7812ACV L7812ACD2T-TR 12 V L7815C L7815CV L7815CD2T-TR L7815AB L7815ABV L7815ABD2T-TR 15 V L7815AC L7815ACV L7815ACD2T-TR 15 V L7818CD2T-TR L7812CP L7815CP (1) L7818C L7818CV L7824C L7824CV L7824CD2T-TR L7824AB L7824ABV L7824ABD2T-TR L7824AC L7824ACV L7824CP 9V L7812CT L7815CT 12 V 15 V L7818CT 18 V L7824CT 24 V 24 V 24 V 1. Available on request. 56/58 L7809CP Doc ID 2143 Rev 20 L78xx, L78xxC, L78xxAB, L78xxAC 10 Revision history Table 32. Document revision history Revision history Date Revision Changes 21-Jun-2004 12 Document updating. 03-Aug-2006 13 Order codes has been updated and new template. 19-Jan-2007 14 D2PAK mechanical data has been updated and add footprint data. 31-May-2007 15 Order codes has been updated. 29-Aug-2007 16 Added Table 1 in cover page. 11-Dec-2007 17 Modified: Table 31. 06-Feb-2008 18 Added: TO-220 mechanical data Figure 42 on page 42 , Figure 43 on page 43, and Table 23 on page 41. Modified: Table 31 on page 56. 18-Mar-2008 19 Added: Table 26: DPAK mechanical data on page 49., Table 27: Tape and reel DPAK mechanical data on page 50. Modified: Table 31 on page 56. 26-Jan-2010 20 Modified Table 1 on page 1 and Table 23 on page 41, added: Figure 42 on page 42 and Figure 43 on page 43, Figure 44 on page 44 and Figure 45 on page 44. 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