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lm78xx/lm78xxa ? 3-terminal 1a positive voltage regulator ? 2012 fairchild semiconductor corporation www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 1 august 2012 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator features ? output current up to 1a ? output voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24 ? thermal overload protection ? short circuit protection ? output transistor safe operating area protection ordering information product number output voltage tolerance package operating temperature lm7805ct 4% to-220 (single gauge) -40 ? c to +125 ? c lm7806ct lm7808ct lm7809ct lm7810ct lm7812ct lm7815ct lm7818ct lm7824ct lm7805act 2% 0 ? c to +125 ? c lm7806act lm7808act lm7809act lm7810act lm7812act lm7815act lm7818act lm7824act general description the lm78xx series of three terminal positive regulators are 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 pro- tection, making it essentially indestructible. if adequate heat sinking is provided, th ey can deliver over 1a output current. although designed primarily as fixed voltage regulators, these devices can be used with external com- ponents to obtain adjustable voltages and currents.
2 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator block diagram figure 1. pin assignment figure 2. absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. the datasheet speci?ations should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. fairchild does not recommend operation outside datasheet speci?ations. symbol parameter value unit v i input voltage v o = 5v to 18v 35 v v o = 24v 40 v r jc thermal resistance junction-cases (to-220) 5 ?/w r ja thermal resistance junction-air (to-220) 65 ?/w t opr operating temperature range lm78xx -40 to +125 ? lm78xxa 0 to +125 t stg storage temperature range -65 to +150 ? starting circuit input 1 reference voltage current generator soa protection thermal protection series pass element error amplifier output 3 gnd 2 1 1. input 2. gnd 3. output gnd to-220 (single gauge)
3 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7805) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 10v, c i = 0.1 f, unless otherwise speci?d. notes: 1. load and line regulation are speci?d 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. 2. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 4.8 5.0 5.2 v 5ma i o 1a, p o 15w, v i = 7v to 20v 4.75 5.0 5.25 regline line regulation (1) t j = +25? v o = 7v to 25v 4.0 100 mv v i = 8v to 12v 1.6 50.0 regload load regulation (1) t j = +25? i o = 5ma to 1.5a 9.0 100 mv i o = 250ma to 750ma 4.0 50.0 i q quiescent current t j = +25? 5.0 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.03 0.5 ma v i = 7v to 25v 0.3 1.3 ? v o / ? t output voltage drift (2) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 42.0 v/v o rr ripple rejection (2) f = 120hz, v o = 8v to 18v 62.0 73.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (2) f = 1khz 15.0 m ? i sc short circuit current v i = 35v, t a = +25? 230 ma i pk p eak current (2) t j = +25? 2.2 a
4 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7806) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 11v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 3. load and line regulation are speci?d 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. 4. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min typ. max. unit v o output voltage t j = +25? 5.75 6.0 6.25 v 5ma i o 1a, p o 15w, v i = 8.0v to 21v 5.7 6.0 6.3 regline line regulation (3) t j = +25? v i = 8v to 25v 5.0 120 mv v i = 9v to 13v 1.5 60.0 regload load regulation (3) t j = +25? i o = 5ma to 1.5a 9.0 120 mv i o = 250ma to 750ma 3.0 60.0 i q quiescent current t j = +25? 5.0 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 8v to 25v 1.3 ? v o / ? t output voltage drift (4) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 45.0 v/v o rr ripple rejection (4) f = 120hz, v o = 8v to 18v 62.0 73.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (4) f = 1khz 19.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (4) t j = +25? 2.2 a
5 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7808) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 14v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 5. load and line regulation are speci?d 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. 6. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 7.7 8.0 8.3 v 5ma i o 1a, p o 15w, v i = 10.5v to 23v 7.6 8.0 8.4 regline line regulation (5) t j = +25? v i = 10.5v to 25v 5.0 160 mv v i = 11.5v to 17v 2.0 80.0 regload load regulation (5) t j = +25? i o = 5ma to 1.5a 10.0 160 mv i o = 250ma to 750ma 5.0 80.0 i q quiescent current t j = +25? 5.0 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.05 0.5 ma v i = 10.5v to 25v 0.5 1.0 ? v o / ? t output voltage drift (6) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 52.0 v/v o rr ripple rejection (6) f = 120hz, v o = 11.5v to 21.5v 56.0 73.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (6) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 230 ma i pk p eak current (6) t j = +25? 2.2 a
6 www.fairchildsemi.com lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7809) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 15v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 7. load and line regulation are speci?d 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. 8. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 8.65 9.0 9.35 v 5ma i o 1a, p o 15w, v i = 11.5v to 24v 8.6 9.0 9.4 regline line regulation (7) t j = +25? v i = 11.5v to 25v 6.0 180 mv v i = 12v to 17v 2.0 90.0 regload load regulation (7) t j = +25? i o = 5ma to 1.5a 12.0 180 mv i o = 250ma to 750ma 4.0 90.0 i q quiescent current t j = +25? 5.0 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 11.5v to 26v 1.3 ? v o / ? t output voltage drift (8) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 58.0 v/v o rr ripple rejection (8) f = 120hz, v o = 13v to 23v 56.0 71.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (8) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (8) t j = +25? 2.2 a lm78xx/lm78xxa rev. 1.2
7 www.fairchildsemi.com lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7810) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 16v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 9. load and line regulation are speci?d 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. 10. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 9.6 10.0 10.4 v 5ma i o 1a, p o 15w, v i = 12.5v to 25v 9.5 10.0 10.5 regline line regulation (9) t j = +25? v i = 12.5v to 25v 10.0 200 mv v i = 13v to 25v 3.0 100 regload load regulation (9) t j = +25? i o = 5ma to 1.5a 12.0 200 mv i o = 250ma to 750ma 4.0 400 i q quiescent current t j = +25? 5.1 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 12.5v to 29v 1.0 ? v o / ? t output voltage drift (10) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 58.0 v/v o rr ripple rejection (10) f = 120hz, v o = 13v to 23v 56.0 71.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (10) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (10) t j = +25? 2.2 a lm78xx/lm78xxa rev. 1.2
8 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7812) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 19v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 11. load and line regulation are speci?d 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. 12. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 11.5 12.0 12.5 v 5ma i o 1a, p o 15w, v i = 14.5v to 27v 11.4 12.0 12.6 regline line regulation (11) t j = +25? v i = 14.5v to 30v 10.0 240 mv v i = 16v to 22v 3.0 120 regload load regulation (11) t j = +25? i o = 5ma to 1.5a 11.0 240 mv i o = 250ma to 750ma 5.0 120 i q quiescent current t j = +25? 5.1 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.1 0.5 ma v i = 14.5v to 30v 0.5 1.0 ? v o / ? t output voltage drift (12) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 76.0 v/v o rr ripple rejection (12) f = 120hz, v i = 15v to 25v 55.0 71.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (12) f = 1khz 18.0 m ? i sc short circuit current v i = 35v, t a = +25? 230 ma i pk p eak current (12) t j = +25? 2.2 a
9 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7815) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 23v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 13. load and line regulation are speci?d 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. 14. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 14.4 15.0 15.6 v 5ma i o 1a, p o 15w, v i = 17.5v to 30v 14.25 15.0 15.75 regline line regulation (13) t j = +25? v i = 17.5v to 30v 11.0 300 mv v i = 20v to 26v 3.0 150 regload load regulation (13) t j = +25? i o = 5ma to 1.5a 12.0 300 mv i o = 250ma to 750ma 4.0 150 i q quiescent current t j = +25? 5.2 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 17.5v to 30v 1.0 ? v o / ? t output voltage drift (14) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 90.0 v/v o rr ripple rejection (14) f = 120hz, v i = 18.5v to 28.5v 54.0 70.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (14) f = 1khz 19.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (14) t j = +25? 2.2 a
10 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7818) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 27v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 15. load and line regulation are speci?d 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. 16. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 17.3 18.0 18.7 v 5ma i o 1a, p o 15w, v i = 21v to 33v 17.1 18.0 18.9 regline line regulation (15) t j = +25? v i = 21v to 33v 15.0 360 mv v i = 24v to 30v 5.0 180 regload load regulation (15) t j = +25? i o = 5ma to 1.5a 15.0 360 mv i o = 250ma to 750ma 5.0 180 i q quiescent current t j = +25? 5.2 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 21v to 33v 1.0 ? v o / ? t output voltage drift (16) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 110 v/v o rr ripple rejection (16) f = 120hz, v i = 22v to 32v 53.0 69.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (16) f = 1khz 22.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (16) t j = +25? 2.2 a
11 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7824) (continued) refer to the test circuits. -40? < t j < 125?, i o = 500ma, v i = 33v, c i = 0.33 f, c o = 0.1 f, unless otherwise specied. notes: 17. load and line regulation are speci?d 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. 18. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 23.0 24.0 25.0 v 5ma i o 1a, p o 15w, v i = 27v to 38v 22.8 24.0 25.25 regline line regulation (17) t j = +25? v i = 27v to 38v 17.0 480 mv v i = 30v to 36v 6.0 240 regload load regulation (17) t j = +25? i o = 5ma to 1.5a 15.0 480 mv i o = 250ma to 750ma 5.0 240 i q quiescent current t j = +25? 5.2 8.0 ma ? i q quiescent current change i o = 5ma to 1a 0.1 0.5 ma v i = 27v to 38v 0.5 1.0 ? v o / ? t output voltage drift (18) i o = 5ma -1.5 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 60.0 v/v o rr ripple rejection (18) f = 120hz, v i = 28v to 38v 50.0 67.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v ro output resistance (18) f = 1khz 28.0 m ? i sc short circuit current v i = 35v, t a = +25? 230 ma i pk p eak current (18) t j = +25? 2.2 a
12 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7805a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 10v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 19. load and line regulation are speci?d 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. 20. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 4.9 5.0 5.1 v i o = 5ma to 1a, p o 15w, v i = 7.5v to 20v 4.8 5.0 5.2 regline line regulation (19) v i = 7.5v to 25v, i o = 500ma 5.0 50.0 mv v i = 8v to 12v 3.0 50.0 t j = +25? v i = 7.3v to 20v 5.0 50.0 v i = 8v to 12v 1.5 25.0 regload load regulation (19) t j = +25?, i o = 5ma to 1.5a 9.0 100 mv i o = 5ma to 1a 9.0 100 i o = 250ma to 750ma 4.0 50.0 i q quiescent current t j = +25? 5.0 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 8v to 25v, i o = 500ma 0.8 v i = 7.5v to 20v, t j = +25? 0.8 ? v o / ? t output voltage drift (20) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (20) f = 120hz, i o = 500ma, v i = 8v to 18v 68.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (20) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (20) t j = +25? 2.2 a
13 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7806a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 11v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 21. load and line regulation are speci?d 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. 22. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 5.58 6.0 6.12 v i o = 5ma to 1a, p o 15w, v i = 8.6v to 21v 5.76 6.0 6.24 regline line regulation (21) v i = 8.6v to 25v, i o = 500ma 5.0 60.0 mv v i = 9v to 13v 3.0 60.0 t j = +25? v i = 8.3v to 21v 5.0 60.0 v i = 9v to 13v 1.5 30.0 regload load regulation (21) t j = +25?, i o = 5ma to 1.5a 9.0 100 mv i o = 5ma to 1a 9.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 4.3 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 19v to 25v, i o = 500ma 0.8 v i = 8.5v to 21v, t j = +25? 0.8 ? v o / ? t output voltage drift (22) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (22) f = 120hz, i o = 500ma, v i = 9v to 19v 65.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (22) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (22) t j = +25? 2.2 a
14 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7808a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 14v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 23. load and line regulation are speci?d 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. 24. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25? 7.84 8.0 8.16 v i o = 5ma to 1a, p o 15w, v i = 10.6v to 23v 7.7 8.0 8.3 regline line regulation (23) v i = 10.6v to 25v, i o = 500ma 6.0 80.0 mv v i = 11v to 17v 3.0 80.0 t j = +25? v i = 10.4v to 23v 6.0 80.0 v i = 11v to 17v 2.0 40.0 regload load regulation (23) t j = +25?, i o = 5ma to 1.5a 12.0 100 mv i o = 5ma to 1a 12.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 5.0 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 11v to 25v, i o = 500ma 0.8 v i = 10.6v to 23v, t j = +25? 0.8 ? v o / ? t output voltage drift (24) i o = 5ma -0.8 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (24) f = 120hz, i o = 500ma, v i = 11.5v to 21.5v 62.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (24) f = 1khz 18.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (24) t j = +25? 2.2 a
15 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7809a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 15v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 25. load and line regulation are speci?d 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. 26. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 8.82 9.0 9.16 v i o = 5ma to 1a, p o 15w, v i = 11.2v to 24v 8.65 9.0 9.35 regline line regulation (25) v i = 11.7v to 25v, i o = 500ma 6.0 90.0 mv v i = 12.5v to 19v 4.0 45.0 t j = +25? v i = 11.5v to 24v 6.0 90.0 v i = 12.5v to 19v 2.0 45.0 regload load regulation (25) t j = +25?, i o = 5ma to 1.5a 12.0 100 mv i o = 5ma to 1a 12.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 5.0 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 12v to 25v, i o = 500ma 0.8 v i = 11.7v to 25v, t j = +25? 0.8 ? v o / ? t output voltage drift (26) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (26) f = 120hz, i o = 500ma, v i = 12v to 22v 62.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (26) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (26) t j = +25? 2.2 a
16 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7810a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 16v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 27. load and line regulation are speci?d 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. 28. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 9.8 10.0 10.2 v i o = 5ma to 1a, p o 15w, v i = 12.8v to 25v 9.6 10.0 10.4 regline line regulation (27) v i = 12.8v to 26v, i o = 500ma 8.0 100 mv v i = 13v to 20v 4.0 50.0 t j = +25? v i = 12.5v to 25v 8.0 100 v i = 13v to 20v 3.0 50.0 regload load regulation (27) t j = +25?, i o = 5ma to 1.5a 12.0 100 mv i o = 5ma to 1a 12.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 5.0 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 12.8v to 25v, i o = 500ma 0.8 v i = 13v to 26v, t j = +25? 0.5 ? v o / ? t output voltage drift (28) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (28) f = 120hz, i o = 500ma, v i = 14v to 24v 62.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (28) f = 1khz 17.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (28) t j = +25? 2.2 a
17 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7812a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 19v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. note: 29. load and line regulation are speci?d 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. 30. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 11.75 12.0 12.25 v i o = 5ma to 1a, p o 15w, v i = 14.8v to 27v 11.5 12.0 12.5 regline line regulation (29) v i = 14.8v to 30v, i o = 500ma 10.0 120 mv v i = 16v to 22v 4.0 120 t j = +25? v i = 14.5v to 27v 10.0 120 v i = 16v to 22v 3.0 60.0 regload load regulation (29) t j = +25?, i o = 5ma to 1.5a 12.0 100 mv i o = 5ma to 1a 12.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 5.1 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 14v to 27v, i o = 500ma 0.8 v i = 15v to 30v, t j = +25? 0.8 ? v o / ? t output voltage drift (30) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (30) f = 120hz, i o = 500ma, v i = 14v to 24v 60.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (30) f = 1khz 18.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (30) t j = +25? 2.2 a
18 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7815a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 23v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 31. load and line regulation are speci?d 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. 32. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 14.75 15.0 15.3 v i o = 5ma to 1a, p o 15w, v i = 17.7v to 30v 14.4 15.0 15.6 regline line regulation (31) v i = 17.4v to 30v, i o = 500ma 10.0 150 mv v i = 20v to 26v 5.0 150 t j = +25? v i = 17.5v to 30v 11.0 150 v i = 20v to 26v 3.0 75.0 regload load regulation (31) t j = +25?, i o = 5ma to 1.5a 12.0 100 mv i o = 5ma to 1a 12.0 100 i o = 250ma to 750ma 5.0 50.0 i q quiescent current t j = +25? 5.2 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 17.5v to 30v, i o = 500ma 0.8 v i = 17.5v to 30v, t j = +25? 0.8 ? v o / ? t output voltage drift (32) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (32) f = 120hz, i o = 500ma, v i = 18.5v to 28.5v 58.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (32) f = 1khz 19.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (32) t j = +25? 2.2 a
19 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7818a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 27v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 33. load and line regulation are speci?d 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. 34. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 17.64 18.0 18.36 v i o = 5ma to 1a, p o 15w, v i = 21v to 33v 17.3 18.0 18.7 regline line regulation (33) v i = 21v to 33v, i o = 500ma 15.0 180 mv v i = 21v to 33v 5.0 180 t j = +25? v i = 20.6v to 33v 15.0 180 v i = 24v to 30v 5.0 90.0 regload load regulation (33) t j = +25?, i o = 5ma to 1.5a 15.0 100 mv i o = 5ma to 1a 15.0 100 i o = 250ma to 750ma 7.0 50.0 i q quiescent current t j = +25? 5.2 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 12v to 33v, i o = 500ma 0.8 v i = 12v to 33v, t j = +25? 0.8 ? v o / ? t output voltage drift (34) i o = 5ma -1.0 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (34) f = 120hz, i o = 500ma, v i = 22v to 32v 57.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (34) f = 1khz 19.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (34) t j = +25? 2.2 a
20 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator electrical characteristics (lm7824a) (continued) refer to the test circuits. 0? < t j < 125?, i o = 1a, v i = 33v, c i = 0.33 f, c o = 0.1 f, unless otherwise speci?d. notes: 35. load and line regulation are speci?d 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. 36. these parameters, although guaranteed, are not 100% tested in production. symbol parameter conditions min. typ. max. units v o output voltage t j = +25? 23.5 24.0 24.5 v i o = 5ma to 1a, p o 15w, v i = 27.3v to 38v 23.0 24.0 25.0 regline line regulation (35) v i = 27v to 38v, i o = 500ma 18.0 240 mv v i = 21v to 33v 6.0 240 t j = +25? v i = 26.7v to 38v 18.0 240 v i = 30v to 36v 6.0 120 regload load regulation (35) t j = +25?, i o = 5ma to 1.5a 15.0 100 mv i o = 5ma to 1a 15.0 100 i o = 250ma to 750ma 7.0 50.0 i q quiescent current t j = +25? 5.2 6.0 ma ? i q quiescent current change i o = 5ma to 1a 0.5 ma v i = 27.3v to 38v, i o = 500ma 0.8 v i = 27.3v to 38v, t j = +25? 0.8 ? v o / ? t output voltage drift (36) i o = 5ma -1.5 mv/? v n output noise voltage f = 10hz to 100khz, t a = +25? 10.0 v/v o rr ripple rejection (36) f = 120hz, i o = 500ma, v i = 28v to 38v 54.0 db v drop dropout voltage i o = 1a, t j = +25? 2.0 v r o output resistance (36) f = 1khz 20.0 m ? i sc short circuit current v i = 35v, t a = +25? 250 ma i pk p eak current (36) t j = +25? 2.2 a
21 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator t ypical performance characteristics figure 3. quiescent current figure 4. peak output current figure 5. output voltage figure 6. quiescent current 6 5.75 5.5 5.25 5 4.75 4.5 v i = 10v v o = 5v i o = 5ma -25 -50 0 0 25 50 75 100 125 quiescent current (ma) junction temperature (?) 3 2.5 2 1.5 1 .5 0 t j = 25 c v o = 100mv 51015202 53035 output current (a) input-output differential (v) 1.02 1.01 1 0.99 0.98 v i ?v o = 5v i o = 5ma -25 -50 0 25 50 75 100 125 normalized output voltage (v) junction temperature (?) 7 6.5 6 5.5 5 4.5 4 t j = 25 c v o = 5v i o = 10ma 10 51520253035 quiescent current (ma) input voltage (v)
22 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator t ypical applications figure 7. dc parameters figure 8. load regulation figure 9. ripple rejection 0.1 f c o c i 0.33 f output input lm78xx 1 3 2 lm78xx 3 2 1 0.33? 270pf 100 ? 30? r l 2n6121 or eq output input v o 0v v o lm78xx output input 5.1 ? 0.33? 2 3 1 r l 470? 120hz +
23 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator figure 10. fixed output regulator figure 11. figure 12. 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 notes : 1. to specify an output voltage, substitute voltage value for ?x. a common ground is required between the input and the output voltage. the input voltage must remain typically 2.0v above the output voltage even during the low point on the input r ipple voltage. 2. c i is required if regulator is located an appreciable distance from power supply ?ter. 3. c o improves stability and transient response. 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
24 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator figure 13. adjustable output regulator (7v to 30v) figure 14. high current voltage regulator figure 15. 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 ? 0.33? ireg 0.1? i o iq1 i o = i reg + b q1 (i reg ? beq1 /r 1 ) q1 bd536 r1 = v beq1 i reg ? q1 b q1 lm78xx output 0.1? 0.33? r1 3 ? 3 2 1 q1 input q2 q1 = tip42 q2 = tip42 r sc = i sc v beq2 r sc /
25 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator figure 16. tracking voltage regulator figure 17. split power supply (?5v ?1a) lm78xx lm741 0.1? 0.33? 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 0.33? 0.1? 2.2? 1? + + 1n4001 1n4001 +15v -15v +20v -20v lm7815 mc7915
26 www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 lm78xx/lm78xxa 3-terminal 1a positive voltage regulator figure 18. negative output voltage circuit figure 19. switching regulator lm78xx output input + 1 2 0.1? 3 lm78xx 1mh 3 1 2 2000? output input d45h11 0.33? 470 ? 4.7 ? 10? 0.5 ? z1 + +
lm78xx/lm78xxa ? 3-terminal 1a positive voltage regulator ? 2012 fairchild semiconductor corporation www.fairchildsemi.com lm78xx/lm78xxa rev. 1.2 27 mechanical dimensions dimensions in millimeters to-220 [ single gauge ]
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