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1/18 october 2001 n output current in excess of 1a n output voltages of 5; 6; 8; 9; 12; 15; 18; 20; 24v n thermal overload protection n output transition soa protection n 2% output voltage tolerance n guaranteed in extended temperature range description the l7800a series of three terminal positive regulators is available in to-220, to-220fp and d 2 pak 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 problem associated with single point regulation. each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. if adeguate heat sinking is provided, they can deliver over 1a output current, although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. l7800ab/ac series precision 1a regulators schematic diagram to-220 d 2 pak to-220fp
l7800ab/ac series 2/18 absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied. thermal data shematic diagram symbol paramet er value unit v i dc input voltage (for v o = 5 to 18v) (for v o = 20, 24v) 35 40 v v i o output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range -65 to +150 c t op operating junction temperature range (for l7800ac ) (for l7800ab ) 0 to +150 -40 to +125 c c symbol parameter to-220 d 2 pak unit r thj-case thermal resistance junction-case 33 c/w r thj-amb thermal resistance junction-ambient 50 62.5 c/w
l7800ab/ac series 3/18 connection diagram (top view) ordering codes (*) available in tape & reel with the suffix oro for fixed version and o-ro for adjustable version. application circuits to-220 to-220fp d 2 pak type to-220 to-220fp d 2 pak (*) output voltage l7805ab l7805abv l7805abp l7805abd2t 5 v l7805ac l7805acv l7805acp l7805acd2t 5 v l7806ab l7806abv l7806abp l7806abd2t 6 v l7806ac l7806acv l7806acp l7806acd2t 6 v l7808ab l7808abv l7808abp l7808abd2t 8 v l7808ac l7808acv l7808acp l7808acd2t 8 v l7809ab l7809abv l7809abp l7809abd2t 9 v l7809ac l7809acv l7809acp l7809acd2t 9 v l7812ab l7812abv L7812ABP l7812abd2t 12 v l7812ac l7812acv l7812acp l7812acd2t 12 v l7815ab l7815abv l7815abp l7815abd2t 15 v l7815ac l7815acv l7815acp l7815acd2t 15 v l7818ab l7818abv l7818abp l7818abd2t 18 v l7818ac l7818acv l7818acp l7818acd2t 18 v l7820ab l7820abv l7820abp l7820abd2t 20 v l7820ac l7820acv l7820acp l7820acd2t 20 v l7824ab l7824abv l7824abp l7824abd2t 24 v l7824ac l7824acv l7824acp l7824acd2t 24 v
l7800ab/ac series 4/18 test circuits figure 1 : dc parameter figure 2 : load regulation figure 3 : ripple rejection
l7800ab/ac series 5/18 electrical characteristics of l7805a (v i =10v, i o =1a, t j = 0 to 150 c (l7805ac), t j = -40 to 125 c (l7805ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 4.9 5 5.1 v v o output voltage i o = 5ma to 1a p o 15w v i = 7.5 to 20v 4.8 5 5.2 v d v o (*) line regulation v i = 7.5 to 25v i o = 500 ma 7 50 mv v i = 8 to 12v 10 50 mv v i = 8 to 12v t j =25 c 2 25 mv v i = 7.3 to 20v t j =25 c 7 50 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 8 50 v i q quiescent current t j =25 c 4.3 6 ma 6ma d i q quiescent current change v i = 8 to 25v i o = 500 ma 0.8 ma v i = 7.5 to 20v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 8 to 18v f = 120hz i o = 500ma 68 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 17 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1.1 mv/ c
l7800ab/ac series 6/18 electrical characteristics of l7806a (v i =11v, i o =1a, t j = 0 to 150 c (l7806ac), t j = -40 to 125 c (l7806ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 5.88 6 6.12 v v o output voltage i o = 5ma to 1a p o 15w v i = 8.6 to 21v 5.76 6 6.24 v d v o (*) line regulation v i = 8.6 to 25v i o = 500 ma 9 60 mv v i = 9 to 13v 11 60 mv v i = 9 to 13v t j =25 c 3 30 mv v i = 8.3 to 21v t j =25 c 9 60 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.3 6 ma 6ma d i q quiescent current change v i = 9 to 25v i o = 500 ma 0.8 ma v i = 8.6 to 21v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 9 to 19v f = 120hz i o = 500ma 65 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 17 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -0.8 mv/ c
l7800ab/ac series 7/18 electrical characteristics of l7808a (v i =14v, i o =1a, t j = 0 to 150 c (l7808ac), t j = -40 to 125 c (l7808ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 7.84 8 8.16 v v o output voltage i o = 5ma to 1a p o 15w v i =10.6 to 23v 7.7 8 8.3 v d v o (*) line regulation v i = 10.6 to 25v i o = 500 ma 12 80 mv v i = 11 to 17v 15 80 mv v i = 11 to 17v t j =25 c 5 40 mv v i = 10.4 to 23v t j =25 c1280mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.3 6 ma 6ma d i q quiescent current change v i = 11 to 25v i o = 500 ma 0.8 ma v i = 10.6 to 23v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 11.5 to 21.5v f = 120hz i o = 500ma 62 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 18 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -0.8 mv/ c
l7800ab/ac series 8/18 electrical characteristics of l7809a (v i =15v, i o =1a, t j = 0 to 150 c (l7809ac), t j = -40 to 125 c (l7809ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 8.82 9 9.18 v v o output voltage i o = 5ma to 1a p o 15w v i =10.6 to 23v 8.65 9 9.35 v d v o (*) line regulation v i = 10.6 to 25v i o = 500 ma 12 90 mv v i = 11 to 17v 15 90 mv v i = 11 to 17v t j =25 c 5 45 mv v i = 10.4 to 23v t j =25 c1290mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.3 6 ma 6ma d i q quiescent current change v i = 11 to 25v i o = 500 ma 0.8 ma v i = 10.6 to 23v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 11.5 to 21.5v f = 120hz i o = 500ma 61 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 18 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -0.8 mv/ c
l7800ab/ac series 9/18 electrical characteristics of l7812a (v i =19v, i o =1a, t j = 0 to 150 c (l7812ac), t j = -40 to 125 c (l7812ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 11.75 12 12.25 v v o output voltage i o = 5ma to 1a p o 15w v i =14.8 to 27v 11.5 12 12.5 v d v o (*) line regulation v i = 14.8 to 30v i o = 500 ma 13 120 mv v i = 16 to 22v 16 120 mv v i = 16 to 22v t j =25 c 6 60 mv v i = 14.5 to 27v t j =25 c 13 120 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.4 6 ma 6ma d i q quiescent current change v i = 15 to 30v i o = 500 ma 0.8 ma v i = 14.8 to 27v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 15 to 25v f = 120hz i o = 500ma 60 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 18 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1 mv/ c
l7800ab/ac series 10/18 electrical characteristics of l7815a (v i =23v, i o =1a, t j = 0 to 150 c (l7815ac), t j = -40 to 125 c (l7815ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 14.7 15 15.3 v v o output voltage i o = 5ma to 1a p o 15w v i = 17.9 to 30v 14.4 15 15.6 v d v o (*) line regulation v i = 17.9 to 30v i o = 500 ma 13 150 mv v i = 20 to 26v 16 150 mv v i = 20 to 26v t j =25 c 6 75 mv v i = 17.5 to 30v t j =25 c 13 150 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.4 6 ma 6ma d i q quiescent current change v i = 17.5 to 30v i o = 500 ma 0.8 ma v i = 17.5 to 30v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 18.5 to 28.5v f = 120hz i o = 500ma 58 db v d dropout voltage i o =1a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 19 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1 mv/ c
l7800ab/ac series 11/18 electrical characteristics of l7818a (v i =27v, i o =1a, t j = 0 to 150 c (l7818ac), t j = -40 to 125 c (l7818ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 17.64 18 18.36 v v o output voltage i o = 5ma to 1a p o 15w v i = 21 to 33v 17.3 18 18.7 v d v o (*) line regulation v i = 21 to 33v i o = 500 ma 25 180 mv v i = 24 to 30v 28 180 mv v i = 24 to 30v t j =25 c1090mv v i = 20.6 to 33v t j =25 c 5 180 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.5 6 ma 6ma d i q quiescent current change v i = 21 to 33v i o = 500 ma 0.8 ma v i = 21 to 33v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 22 to 32v f = 120hz i o = 500ma 57 db v d dropout voltage i o =1 a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 19 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1 mv/ c
l7800ab/ac series 12/18 electrical characteristics of l7820a (v i =28v, i o =1a, t j = 0 to 150 c (l7820ac), t j = -40 to 125 c (l7820ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 19.6 20 20.4 v v o output voltage i o = 5ma to 1a p o 15w v i = 23 to 35v 19.2 20 20.8 v d v o (*) line regulation v i = 23 to 35v i o = 500 ma 200 mv v i = 26 to 32v 200 mv v i = 26 to 32v t j =25 c 100 mv v i = 23 to 32v t j =25 c 200 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.5 6 ma 6ma d i q quiescent current change v i = 23 to 35v i o = 500 ma 0.8 ma v i = 23 to 35v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 24 to 35v f = 120hz i o = 500ma 56 db v d dropout voltage i o =1 a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 20 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1 mv/ c
l7800ab/ac series 13/18 electrical characteristics of l7824a (v i =33v, i o =1a, t j = 0 to 150 c (l7824ac), t j = -40 to 125 c (l7824ab), unless otherwise specified.) (*) 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 cycle is used. symbol parameter test conditions min. typ. max. unit v o output voltage t j =25 c 23.5 24 24.5 v v o output voltage i o = 5ma to 1a p o 15w v i = 27.3 to 38v 23 24 25 v d v o (*) line regulation v i = 27 to 38v i o = 500 ma 31 240 mv v i = 30 to 36v 35 240 mv v i = 30 to 36v t j =25 c 14 120 mv v i = 26.7 to 38v t j =25 c 31 240 mv d v o (*) load regulation i o = 5ma to 1a 25 100 mv i o = 5ma to 1.5a t j =25 c 30 100 v i o = 250 to 750ma 10 50 v i q quiescent current t j =25 c 4.6 6 ma 6ma d i q quiescent current change v i = 27.3 to 38v i o = 500 ma 0.8 ma v i = 27.3 to 38v t j =25 c 0.8 ma i o = 5ma to 1a 0.5 ma svr supply voltage rejection v i = 28 to 38v f = 120hz i o = 500ma 54 db v d dropout voltage i o =1 a t j =25 c2v en output noise voltage t a =25 c b =10hz to 100khz 10 m v/v o r o output resistance f =1khz 20 m w i sc short circuit current v i = 35v t a =25 c 0.2 a i scp short circuit peak current t j =25 c 2.2 a d v o / d t output voltage drift -1.5 mv/ c
l7800ab/ac series 14/18 application information design consideration the l7800a 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 0.33mf 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 2v 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 4 : dc parameter figure 5 : dc parameter figure 6 : dc parameter figure 7 : dc parameter v xx i o = ?? +i d r 1 v o , 7.0 to 20v v i -v o 2.0v v beq1 r 1 = ?????? i q1 i req - ?? b q1 v beq1 i o =i reg +q 1 (i reg ???? ) r 1
l7800ab/ac series 15/18 dim. mm. inch min. typ max. min. typ. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 d1 1.27 0.050 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g 4.95 5.15 0.194 0.203 g1 2.4 2.7 0.094 0.106 h2 10.0 10.40 0.393 0.409 l2 16.4 0.645 l4 13.0 14.0 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.2 6.6 0.244 0.260 l9 3.5 3.93 0.137 0.154 dia. 3.75 3.85 0.147 0.151 to-220 mechanical data p011c
l7800ab/ac series 16/18 dim. mm. inch 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 1.70 0.045 0.067 f2 1.15 1.70 0.045 0.067 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 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 to-220fp mechanical data l2 a b d e h g l6 ? f l3 g1 123 f2 f1 l7 l4
l7800ab/ac series 17/18 dim. mm. inch min. typ max. min. typ. max. a 4.4 4.6 0.173 0.181 a1 2.49 2.69 0.098 0.106 a2 0.03 0.23 0.001 0.009 b 0.7 0.93 0.027 0.036 b2 1.14 1.7 0.044 0.067 c 0.45 0.6 0.017 0.023 c2 1.23 1.36 0.048 0.053 d 8.95 9.35 0.352 0.368 d1 8 0.315 e 10 10.4 0.393 0.409 e1 8.5 0.335 g 4.88 5.28 0.192 0.208 l 15 15.85 0.590 0.624 l2 1.27 1.4 0.050 0.055 l3 1.4 1.75 0.055 0.068 m 2.4 3.2 0.094 0.126 r 0.4 0.016 v2 0 8 0 8 d 2 pak mechanical data p011p6g
l7800ab/ac series 18/18 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malt a - morocco singapore - spain - sweden - switzerland - united kingdom - united states. ? http://www.st.com

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