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lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 1 august 2013 lm78xx / lm78xxa 3-terminal 1 a positive voltage regulator features ? output current up to 1 a ? output voltages: 5, 6, 8, 9, 10, 12, 15, 18, 24 v ? thermal overload protection ? short-circuit protection ? output transistor safe operating area protection ordering information (1) note: 1. above output voltage tolerance is available at 25c. product number output voltage tolerance package operating temperature packing method lm7805ct 4% to-220 (single gauge) -40 c to +125 c rail lm7806ct lm7808ct lm7809ct lm7810ct lm7812ct lm7815ct lm7818ct lm7824ct LM7805ACT 2% 0 c to +125 c lm7809act lm7810act lm7812act lm7815act description the lm78xx series of three-terminal positive regulators is available in the to-220 package and with several fixed output voltages, making them useful in a wide range of applications. each type employs internal current limiting, thermal shut-down, and safe operating area protection. 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 exter- nal components for adjustable voltages and currents. 1 1. input 2. gnd 3. output gnd to-220 (single gauge)
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 2 block diagram figure 1. block diagram absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. in addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. values are at t a = 25c unless otherwise noted. symbol parameter value unit v i input voltage v o = 5 v to 18 v 35 v v o = 24 v 40 r jc thermal resistance, junction-case (to-220) 5 c/w r ja thermal resistance, junction-air (to-220) 65 c/w t opr operating temperature range lm78xx -40 to +125 c lm78xxa 0 to +125 t stg storage temperature range - 65 to +150 c starting circuit input 1 reference voltage current generator soa protection thermal protection series pass element error amplifier output 3 gnd 2
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 3 electrical characteristics (lm7805) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 10 v, c i = 0.1 f, unless otherwise specified. notes: 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 3. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 4.805.005.20 v i o = 5 ma to 1 a, p o 15 w, v i = 7 v to 20 v 4.75 5.00 5.25 regline line regulation (2) t j = +25 c v i = 7 v to 25 v 4.0 100.0 mv v i = 8 v to 12 v 1.6 50.0 regload load regulation (2) t j = +25 c i o = 5 ma to 1.5 a 9.0 100.0 mv i o = 250 ma to 750 ma 4.0 50.0 i q quiescent current t j =+25 c5.08.0ma i q quiescent current change i o = 5 ma to 1 a 0.03 0.50 ma v i = 7 v to 25 v 0.30 1.30 v o / t output voltage drift (3) i o = 5 ma -0.8 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 42.0 v/v o rr ripple rejection (3) f = 120 hz, v i = 8 v to 18 v 62.0 73.0 db v drop dropout voltage t j = +25 c, i o = 1 a 2.0 v r o output resistance (3) f = 1 khz 15.0 m i sc short-circuit current t j = +25 c, v i = 35 v 230 ma i pk peak current (3) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 4 electrical characteristics (lm7806) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 11 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 4. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 5. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 5.756.006.25 v i o = 5 ma to 1 a, p o 15 w, v i = 8.0 v to 21 v 5.70 6.00 6.30 regline line regulation (4) t j = +25 c v i = 8 v to 25 v 5.0 120 mv v i = 9 v to 13 v 1.5 60.0 regload load regulation (4) t j = +25 c i o = 5 ma to 1.5 a 9.0 120.0 mv i o = 250 ma to 750 ma 3.0 60.0 i q quiescent current t j =+25 c5.08.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 8 v to 25 v 1.3 v o / t output voltage drift (5) i o = 5 ma -0.8 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 45.0 v/v o rr ripple rejection (5) f = 120 hz, v i = 8 v to 18 v 62.0 73.0 db v drop dropout voltage t j = +25 c, i o = 1 a 2.0 v r o output resistance (5) f = 1 khz 19.0 m i sc short-circuit current t j = +25 c, v i = 35 v 250 ma i pk peak current (5) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 5 electrical characteristics (lm7808) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 14 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 6. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 7. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 7.7 8.0 8.3 v i o = 5 ma to 1 a, p o 15 w, v i = 10.5 v to 23 v 7.6 8.0 8.4 regline line regulation (6) t j = +25 c v i = 10.5 v to 25 v 5.0 160.0 mv v i = 11.5 v to 17 v 2.0 80.0 regload load regulation (6) t j = +25 c i o = 5 ma to 1.5 a 10.0 160.0 mv i o = 250 ma to 750 ma 5.0 80.0 i q quiescent current t j =+25 c5.08.0ma i q quiescent current change i o = 5 ma to 1 a 0.05 0.50 ma v i = 10.5 v to 25 v 0.5 1.0 v o / t output voltage drift (7) i o = 5 ma -0.8 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 52.0 v/v o rr ripple rejection (7) f = 120 hz, v i = 11.5 v to 21.5 v 56.0 73.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (7) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j = +25 c230ma i pk peak current (7) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 6 electrical characteristics (lm7809) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 15 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 8. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 9. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 8.659.009.35 v i o = 5 ma to 1 a, p o 15 w, v i = 11.5 v to 24 v 8.60 9.00 9.40 regline line regulation (8) t j = +25 c v i = 11.5 v to 25 v 6.0 180.0 mv v i = 12 v to 17 v 2.0 90.0 regload load regulation (8) t j = +25 c i o = 5 ma to 1.5 a 12.0 180.0 mv i o = 250 ma to 750 ma 4.0 90.0 i q quiescent current t j =+25 c5.08.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 11.5 v to 26 v 1.3 v o / t output voltage drift (9) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 58.0 v/v o rr ripple rejection (9) f = 120 hz, v i = 13 v to 23 v 56.0 71.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (9) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j = +25 c250ma i pk peak current (9) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 7 electrical characteristics (lm7810) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 16 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 10. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 11. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 9.6 10.0 10.4 v i o = 5 ma to 1 a, p o 15 w, v i = 12.5 v to 25 v 9.5 10.0 10.5 regline line regulation (10) t j = +25 c v i = 12.5 v to 25 v 10 200 mv v i = 13 v to 25 v 3 100 regload load regulation (10) t j = +25 c i o = 5 ma to 1.5 a 12 200 mv i o = 250 ma to 750 ma 4 400 i q quiescent current t j =+25 c5.18.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 12.5 v to 29 v 1.0 v o / t output voltage drift (11) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 58.0 v/v o rr ripple rejection (11) f = 120 hz, v i = 13 v to 23 v 56.0 71.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (11) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j = +25 c250ma i pk peak current (11) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 8 electrical characteristics (lm7812) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 19 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 12. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 13. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 11.5 12.0 12.5 v i o = 5 ma to 1 a, p o 15 w, v i = 14.5 v to 27 v 11.4 12.0 12.6 regline line regulation (12) t j = +25 c v i = 14.5 v to 30 v 10 240 mv v i = 16 v to 22 v 3 120 regload load regulation (12) t j = +25 c i o = 5 ma to 1.5 a 11 240 mv i o = 250 ma to 750 ma 5 120 i q quiescent current t j =+25 c5.18.0ma i q quiescent current change i o = 5 ma to 1 a 0.1 0.5 ma v i = 14.5 v to 30 v 0.5 1.0 v o / t output voltage drift (13) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 76.0 v/v o rr ripple rejection (13) f = 120 hz, v i = 15 v to 25 v 55.0 71.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (13) f = 1 khz 18.0 m i sc short-circuit current v i = 35 v, t j = +25 c230ma i pk peak current (13) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 9 electrical characteristics (lm7815) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 23 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 14. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 15. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 14.40 15.00 15.60 v i o = 5 ma to 1 a, p o 15 w, v i = 17.5 v to 30 v 14.25 15.00 15.75 regline line regulation (14) t j = +25 c v i = 17.5 v to 30 v 11 300 mv v i = 20 v to 26 v 3 150 regload load regulation (14) t j = +25 c i o = 5 ma to 1.5 a 12 300 mv i o = 250 ma to 750 ma 4 150 i q quiescent current t j =+25 c5.28.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 17.5 v to 30 v 1.0 v o / t output voltage drift (15) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 90.0 v/v o rr ripple rejection (15) f = 120 hz, v i = 18.5 v to 28.5 v 54.0 70.0 db v drop dropout voltage i o = 1 a, t j =+25 c2.0v r o output resistance (15) f = 1 khz 19.0 m i sc short-circuit current v i = 35 v, t j = +25 c250ma i pk peak current (15) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 10 electrical characteristics (lm7818) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 27 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 16. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 17. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 17.3 18.0 18.7 v i o = 5 ma to 1 a, p o 15 w, v i = 21 v to 33 v 17.1 18.0 18.9 regline line regulation (16) t j = +25 c v i = 21 v to 33 v 15 360 mv v i = 24 v to 30 v 5 180 regload load regulation (16) t j = +25 c i o = 5 ma to 1.5 a 15 360 mv i o = 250 ma to 750 ma 5 180 i q quiescent current t j =+25 c5.28.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 21 v to 33 v 1.0 v o / t output voltage drift (17) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c110 v/v o rr ripple rejection (17) f = 120 hz, v i = 22 v to 32 v 53.0 69.0 db v drop dropout voltage i o = 1 a, t j =+25 c2.0v r o output resistance (17) f = 1 khz 22.0 m i sc short-circuit current v i = 35 v, t j =+25 c250ma i pk peak current (17) t j =+25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 11 electrical characteristics (lm7824) refer to the test circuit, -40c < t j < 125c, i o = 500 ma, v i = 33 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 18. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 19. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 23.00 24.00 25.00 v i o = 5 ma to 1 a, p o 15 w, v i = 27 v to 38 v 22.80 24.00 25.25 regline line regulation (18) t j = +25 c v i = 27 v to 38 v 17 480 mv v i = 30 v to 36 v 6 240 regload load regulation (18) t j = +25 c i o = 5 ma to 1.5 a 15 480 mv i o = 250 ma to 750 ma 5 240 i q quiescent current t j =+25 c5.28.0ma i q quiescent current change i o = 5 ma to 1 a 0.1 0.5 ma v i = 27 v to 38 v 0.5 1.0 v o / t output voltage drift (19) i o = 5 ma -1.5 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c6.0 v/v o rr ripple rejection (19) f = 120 hz, v i = 28 v to 38 v 50.0 67.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (19) f = 1 khz 28.0 m i sc short-circuit current v i = 35 v, t j = +25 c230ma i pk peak current (19) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 12 electrical characteristics (lm7805a) refer to the test circuit, 0c < t j < 125c, i o = 1 a, v i = 10 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 20. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 21. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 4.9 5.0 5.1 v i o = 5 ma to 1 a, p o 15 w, v i = 7.5 v to 20 v 4.8 5.0 5.2 regline line regulation (20) v i = 7.5 v to 25 v, i o = 500 ma 5.0 50.0 mv v i = 8 v to 12 v 3.0 50.0 t j = +25 c v i = 7.3 v to 20 v 5.0 50.0 v i = 8 v to 12 v 1.5 25.0 regload load regulation (20) t j = +25 c, i o = 5 ma to 1.5 a 9.0 100.0 mv i o = 5 ma to 1 a 9.0 100.0 i o = 250 ma to 750 ma 4.0 50.0 i q quiescent current t j =+25 c5.06.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 8 v to 25 v, i o = 500 ma 0.8 v i = 7.5 v to 20 v, t j = +25 c0.8 v o / t output voltage drift (21) i o = 5 ma -0.8 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 10.0 v/v o rr ripple rejection (21) f = 120 hz, v o = 500 ma, v i =8 v to 18 v 68.0 db v drop dropout voltage i o = 1 a, t j =+25 c2.0v r o output resistance (21) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j =+25 c250ma i pk peak current (21) t j =+25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 13 electrical characteristics (lm7809a) refer to the test circuit, 0c < t j < 125c, i o = 1 a, v i = 15 v, c i = 0.33 f,c o = 0.1 f, unless otherwise specified. notes: 22. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 23. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 8.829.009.16 v i o = 5 ma to 1 a, p o 15 w, v i = 11.2 v to 24 v 8.65 9.00 9.35 regline line regulation (22) v i = 11.7 v to 25 v, i o = 500 ma 6.0 90.0 mv v i = 12.5 v to 19 v 4.0 45.0 t j = +25 c v i = 11.5 v to 24 v 6.0 90.0 v i = 12.5 v to 19 v 2.0 45.0 regload load regulation (22) t j = +25 c, i o = 5 ma to 1.5 a 12.0 100.0 mv i o = 5 ma to 1 a 12.0 100.0 i o = 250 ma to 750 ma 5.0 50.0 i q quiescent current t j = +25 c5.06.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 12 v to 25 v, i o = 500 ma 0.8 v i = 11.7 v to 25 v, t j = +25 c0.8 v o / t output voltage drift (23) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 10.0 v/v o rr ripple rejection (23) f = 120 hz, v o = 500 ma, v i =12 v to 22 v 62.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (23) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j = +25 c250ma i pk peak current (23) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 14 electrical characteristics (lm7810a) refer to the test circuit, 0c < t j < 125c, i o = 1 a, v i = 16 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 24. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 25. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 9.8 10.0 10.2 v i o = 5 ma to 1 a, p o 15 w, v i = 12.8 v to 25 v 9.6 10.0 10.4 regline line regulation (24) v i = 12.8 v to 26 v, i o = 500 ma 8.0 100.0 mv v i = 13 v to 20 v 4.0 50.0 t j = +25 c v i = 12.5 v to 25 v 8.0 100.0 v i = 13 v to 20 v 3.0 50.0 regload load regulation (24) t j = +25 c, i o = 5 ma to 1.5 a 12.0 100.0 mv i o = 5 ma to 1 a 12.0 100.0 i o = 250 ma to 750 ma 5.0 50.0 i q quiescent current t j =+25 c5.06.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 12.8 v to 25 v, i o = 500 ma 0.8 v i = 13 v to 26 v, t j = +25 c0.5 v o / t output voltage drift (25) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 10.0 v/v o rr ripple rejection (25) f = 120 hz, v o = 500 ma, v i =14 v to 24 v 62.0 db v drop dropout voltage i o = 1 a, t j =+25 c2.0v r o output resistance (25) f = 1 khz 17.0 m i sc short-circuit current v i = 35 v, t j =+25 c250ma i pk peak current (25) t j =+25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 15 electrical characteristics (lm7812a) refer to the test circuit, 0c < t j < 125c, i o = 1 a, v i = 19 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 26. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 27. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 11.75 12.00 12.25 v i o = 5 ma to 1 a, p o 15 w, v i = 14.8 v to 27 v 11.50 12.00 12.50 regline line regulation (26) v i = 14.8 v to 30 v, i o = 500 ma 10.0 120.0 mv v i = 16 v to 22 v 4.0 120.0 t j = +25 c v i = 14.5 v to 27 v 10.0 120.0 v i = 16 v to 22 v 3.0 60.0 regload load regulation (26) t j = +25 c, i o = 5 ma to 1.5 a 12.0 100.0 mv i o = 5 ma to 1 a 12.0 100.0 i o = 250 ma to 750 ma 5.0 50.0 i q quiescent current t j = +25 c5.06.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 14 v to 27 v, i o = 500 ma 0.8 v i = 15 v to 30 v, t j = +25 c0.8 v o / t output voltage drift (27) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 10.0 v/v o rr ripple rejection (27) f = 120 hz, v o = 500 ma, v i =14 v to 24 v 60.0 db v drop dropout voltage i o = 1 a, t j = +25 c2.0v r o output resistance (27) f = 1 khz 18.0 m i sc short-circuit current v i = 35 v, t j = +25 c250ma i pk peak current (27) t j = +25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 16 electrical characteristics (lm7815a) refer to the test circuit, 0c < t j < 125c, i o = 1 a, v i = 23 v, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. notes: 28. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. 29. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 14.75 15.00 15.30 v i o = 5 ma to 1 a, p o 15 w, v i = 17.7 v to 30 v 14.40 15.00 15.60 regline line regulation (28) v i = 17.4 v to 30 v, i o = 500 ma 10.0 150.0 mv v i = 20 v to 26 v 5.0 150.0 t j = +25 c v i = 17.5 v to 30 v 11.0 150.0 v i = 20 v to 26 v 3.0 75.0 regload load regulation (28) t j = +25 c, i o = 5 ma to 1.5 a 12.0 100.0 mv i o = 5 ma to 1 a 12.0 100.0 i o = 250 ma to 750 ma 5.0 50.0 i q quiescent current t j =+25 c5.26.0ma i q quiescent current change i o = 5 ma to 1 a 0.5 ma v i = 17.5 v to 30 v, i o = 500 ma 0.8 v i = 17.5 v to 30 v, t j = +25 c0.8 v o / t output voltage drift (29) i o = 5 ma -1.0 mv/ c v n output noise voltage f = 10 hz to 100 khz, t a = +25 c 10.0 v/v o rr ripple rejection (29) f = 120 hz, v o = 500 ma, v i =18.5 v to 28.5 v 58.0 db v drop dropout voltage i o = 1 a, t j =+25 c2.0v r o output resistance (29) f = 1 khz 19.0 m i sc short-circuit current v i = 35 v, t j =+25 c250ma i pk peak current (29) t j =+25 c2.2a
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 17 typical performance characteristics figure 2. quiescent current figure 3. peak output current figure 4. output voltage figure 5. quiescent current
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 18 typical applications figure 6. dc parameters figure 7. load regulation figure 8. ripple rejection 0.1 f c o c i 0.33 f output input lm78xx 1 3 2 lm78xx 3 2 1 0.33f 270pf 100 30s r l 2n6121 or eq output input v o 0v v o lm78xx output input 5.1 0.33f 2 3 1 r l 470f 120hz +
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 19 figure 9. fixed-output regulator notes: 29. to specify an output voltage, substitute voltage value for ?xx?. a common ground is required between the input and the output voltage. the input voltage must remain typically 2.0 v above the output voltage even during the low point on the input ripple voltage. 30. c i is required if regulator is located an appreciable distance from power supply filter. 31. c o improves stability and transient response. figure 10. figure 11. circuit for increasing output voltage 0.1 f c o c i 0.33 f output input lm78xx 1 3 2 0.1 f c o c i 0.33 f output input lm78xx 1 3 2 v xx r 1 r l i q i o i o = r 1 + i q v xx 0.1 f c o c i 0.33 f output input lm78xx 1 3 2 v xx r1 r2 i q i ri 5 i q v o = v xx (1 + r 2 / r 1 ) + i q r 2
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 20 figure 12. adjustable output regulator (7 v to 30 v) figure 13. high-current voltage regulator figure 14. high output current with short-circuit protection lm741 - + 2 3 6 4 2 3 1 0.33 f c i input output 0.1 f c o lm7805 10k i ri 5 i q v o = v xx (1 + r 2 / r 1 ) + i q r 2 3 2 1 lm78xx output input r1 3 0.33f ireg 0.1f i o iq1 i o = i reg + b q1 (i reg Cv beq1 /r 1 ) q1 bd536 r1 = v beq1 i reg Ci q1 b q1 / lm78xx output 0.1f 0.33f r1 3 3 2 1 q1 input q2 q1 = tip42 q2 = tip42 r sc = i sc v beq2 r sc
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 21 figure 15. tracking voltage regulator figure 16. split power supply (15 v - 1 a) lm78xx lm741 0.1f 0.33f 1 2 3 7 2 6 4 3 4.7k 4.7k tip42 common common v o -v o v i -v in _ + 3 1 2 1 3 2 0.33f 0.1f 2.2f 1f + + 1n4001 1n4001 +15v -15v +20v -20v lm7815 mc7915
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 22 figure 17. negative output voltage circuit figure 18. switching regulator lm78xx output input + 1 2 0.1f 3 lm78xx 1mh 3 1 2 2000f output input d45h11 0.33f 470 4.7 10f 0.5 z1 + +
lm78xx / lm78xxa ? 3-terminal 1 a positive voltage regulator ? 2006 fairchild semiconductor corporation www.fairchildsemi.com lm78xx / lm78xxa rev. 1.3.0 23 physical dimensions figure 19. to-220, molded, 3-lead, jedec variation ab (active) package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/dwg/to/to220b03.pdf . for current tape and reel specifications, visit fairchild semiconductor?s online packaging area: http://www.fairchildsemi.com/packing_dwg/pkg-to220b03_tc.pdf . to-220 (single gauge)
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