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?2001 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.0 features ? output current up to 1a ? output voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24v ? thermal overload protection ? short circuit protection ? output transistor safe operating area protection description the ka78xx/ka78xxa series of three-terminal positive regulator are available in the to-220/d-pak 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, making it essentially indestructible. if adequate 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 voltages and currents. to-220 d-pak 1. input 2. gnd 3. output 1 1 internal block digram ka78xx/ka78xxa 3-terminal 1a positive voltage regulator
ka78xx/ka78xxa 2 absolute maximum ratings electrical characteristics (ka7805/ka7805r) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =10v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol value unit input voltage (for v o = 5v to 18v) (for v o = 24v) v i v i 35 40 v v thermal resistance junction-cases (to-220) r jc 5 c/w thermal resistance junction-air (to-220) r ja 65 c/w operating temperature range (ka78xx/a/r) t opr 0 ~ +125 c storage temperature range t stg -65 ~ +150 c parameter symbol conditions ka7805 unit min. typ. max. output voltage v o t j =+25 o c 4.8 5.0 5.2 5.0ma io 1.0a, p o 15w v i = 7v to 20v 4.75 5.0 5.25 v line regulation (note1) regline t j =+25 o c v o = 7v to 25v - 4.0 100 mv v i = 8v to 12v - 1.6 50 load regulation (note1) regload t j =+25 o c i o = 5.0ma to1.5a - 9 100 mv i o =250ma to 750ma - 4 50 quiescent current i q t j =+25 o c-5.08.0ma quiescent current change ? i q i o = 5ma to 1.0a - 0.03 0.5 ma v i = 7v to 25v - 0.3 1.3 output voltage drift ? v o / ? ti o = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-42- v/v o ripple rejection rr f = 120hz v o = 8v to 18v 62 73 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 15 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 230 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 3 electrical characteristics (ka7806/ka7806r) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =11v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7806 unit min. typ. max. output voltage v o t j =+25 o c 5.75 6.0 6.25 5.0ma i o 1.0a, p o 15w v i = 8.0v to 21v 5.7 6.0 6.3 v line regulation (note1) regline t j =+25 o c v i = 8v to 25v - 5 120 mv v i = 9v to 13v - 1.5 60 load regulation (note1) regload t j =+25 o c i o =5ma to 1.5a - 9 120 mv i o =250ma to750ma - 3 60 quiescent current i q t j =+25 o c-5.08.0ma quiescent current change ? i q i o = 5ma to 1a - - 0.5 ma v i = 8v to 25v - - 1.3 output voltage drift ? v o / ? ti o = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-45- v/vo ripple rejection rr f = 120hz v i = 9v to 19v 59 75 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 19 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 4 electrical characteristics (KA7808/KA7808r) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =14v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions KA7808 unit min. typ. max. output voltage v o t j =+25 o c 7.7 8.0 8.3 5.0ma i o 1.0a, p o 15w v i = 10.5v to 23v 7.6 8.0 8.4 v line regulation (note1) regline t j =+25 o c v i = 10.5v to 25v - 5.0 160 mv v i = 11.5v to 17v - 2.0 80 load regulation (note1) regload t j =+25 o c i o = 5.0ma to 1.5a - 10 160 mv i o = 250ma to 750ma -5.080 quiescent current i q t j =+25 o c-5.08.0ma quiescent current change ? i q i o = 5ma to 1.0a - 0.05 0.5 ma v i = 10.5a to 25v - 0.5 1.0 output voltage drift ? v o / ? ti o = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-52- v/vo ripple rejection rr f = 120hz, v i = 11.5v to 21.5v 56 73 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 230 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 5 electrical characteristics (ka7809/ka7809r) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =15v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7809 unit min. typ. max. output voltage v o t j =+25 o c 8.65 9 9.35 5.0ma i o 1.0a, p o 15w v i = 11.5v to 24v 8.6 9 9.4 v line regulation (note1) regline t j =+25 o c v i = 11.5v to 25v - 6 180 mv v i = 12v to 17v - 2 90 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 12 180 mv i o = 250ma to 750ma - 4 90 quiescent current i q t j =+25 o c-5.08.0ma quiescent current change ? i q i o = 5ma to 1.0a - - 0.5 ma v i = 11.5v to 26v - - 1.3 output voltage drift ? v o / ? ti o = 5ma - -1 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-58- v/vo ripple rejection rr f = 120hz v i = 13v to 23v 56 71 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j = +25 o c-2.2-a
ka78xx/ka78xxa 6 electrical characteristics (ka7810) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =16v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7810 unit min. typ. max. output voltage v o t j =+25 o c 9.6 10 10.4 5.0ma i o 1.0a, p o 15w v i = 12.5v to 25v 9.5 10 10.5 v line regulation (note1) regline t j =+25 o c v i = 12.5v to 25v - 10 200 mv v i = 13v to 25v - 3 100 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 12 200 mv i o = 250ma to 750ma - 4 400 quiescent current i q t j =+25 o c-5.18.0ma quiescent current change ? i q i o = 5ma to 1.0a - - 0.5 ma v i = 12.5v to 29v - - 1.0 output voltage drift ? v o / ? ti o = 5ma - -1 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-58- v/vo ripple rejection rr f = 120hz v i = 13v to 23v 56 71 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 7 electrical characteristics (ka7812/ka7812r) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =19v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7812/ka7812r unit min. typ. max. output voltage v o t j =+25 o c 11.5 12 12.5 5.0ma i o 1.0a, p o 15w v i = 14.5v to 27v 11.4 12 12.6 v line regulation (note1) regline t j =+25 o c v i = 14.5v to 30v - 10 240 mv v i = 16v to 22v - 3.0 120 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 11 240 mv i o = 250ma to 750ma - 5.0 120 quiescent current i q t j =+25 o c-5.18.0ma quiescent current change ? i q i o = 5ma to 1.0a - 0.1 0.5 ma v i = 14.5v to 30v - 0.5 1.0 output voltage drift ? v o / ? ti o = 5ma - -1 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-76- v/vo ripple rejection rr f = 120hz v i = 15v to 25v 55 71 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 18 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 230 - ma peak current i pk t j = +25 o c-2.2-a
ka78xx/ka78xxa 8 electrical characteristics (ka7815) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =23v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7815 unit min. typ. max. output voltage v o t j =+25 o c 14.4 15 15.6 5.0ma i o 1.0a, p o 15w v i = 17.5v to 30v 14.25 15 15.75 v line regulation (note1) regline t j =+25 o c v i = 17.5v to 30v - 11 300 mv v i = 20v to 26v - 3 150 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 12 300 mv i o = 250ma to 750ma - 4 150 quiescent current i q t j =+25 o c-5.28.0ma quiescent current change ? i q i o = 5ma to 1.0a - - 0.5 ma v i = 17.5v to 30v - - 1.0 output voltage drift ? v o / ? ti o = 5ma - -1 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-90- v/vo ripple rejection rr f = 120hz v i = 18.5v to 28.5v 54 70 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 19 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 9 electrical characteristics (ka7818) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =27v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7818 unit min. typ. max. output voltage v o t j =+25 o c 17.3 18 18.7 5.0ma i o 1.0a, p o 15w v i = 21v to 33v 17.1 18 18.9 v line regulation (note1) regline t j =+25 o c v i = 21v to 33v - 15 360 mv v i = 24v to 30v - 5 180 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 15 360 mv i o = 250ma to 750ma - 5.0 180 quiescent current i q t j =+25 o c-5.28.0ma quiescent current change ? i q i o = 5ma to 1.0a - - 0.5 ma v i = 21v to 33v - - 1 output voltage drift ? v o / ? ti o = 5ma - -1 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-110- v/vo ripple rejection rr f = 120hz v i = 22v to 32v 53 69 - db dropout voltage v drop i o = 1a, t j =+25 o c - 2 - v output resistance r o f = 1khz - 22 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 10 electrical characteristics (ka7824) (refer to test circuit ,0 c < t j < 125 c, i o = 500ma, v i =33v, c i = 0.33 f, c o =0.1 f, unless otherwise specified) note: 1. 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. parameter symbol conditions ka7824 unit min. typ. max. output voltage v o t j =+25 o c232425 5.0ma i o 1.0a, p o 15w v i = 27v to 38v 22.8 24 25.25 v line regulation (note1) regline t j =+25 o c v i = 27v to 38v - 17 480 mv v i = 30v to 36v - 6 240 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 15 480 mv i o = 250ma to 750ma - 5.0 240 quiescent current i q t j =+25 o c-5.28.0ma quiescent current change ? i q i o = 5ma to 1.0a - 0.1 0.5 ma v i = 27v to 38v - 0.5 1 output voltage drift ? v o / ? ti o = 5ma - -1.5 - mv/ o c output noise voltage v n f = 10hz to 100khz, t a =+25 o c-60- v/vo ripple rejection rr f = 120hz v i = 28v to 38v 50 67 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 28 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 230 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 11 electrical characteristics (ka7805a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 10v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 o c4.955.1 v i o = 5ma to 1a, p o 15w v i = 7.5v to 20v 4.8 5 5.2 line regulation (note1) regline v i = 7.5v to 25v i o = 500ma -550 mv v i = 8v to 12v - 3 50 t j =+25 o c v i = 7.3v to 20v - 5 50 v i = 8v to 12v - 1.5 25 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 9 100 mv i o = 5ma to 1a - 9 100 i o = 250ma to 750ma - 4 50 quiescent current i q t j =+25 o c-5.06.0ma quiescent current change ? i q i o = 5ma to 1a - - 0.5 ma v i = 8 v to 25v, i o = 500ma - - 0.8 v i = 7.5v to 20v, t j =+25 o c--0.8 output voltage drift ? v/ ? t io = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz t a =+25 o c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 8v to 18v -68 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j = +25 o c-2.2-a
ka78xx/ka78xxa 12 electrical characteristics (ka7806a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 11v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 o c 5.58 6 6.12 v i o = 5ma to 1a, p o 15w v i = 8.6v to 21v 5.76 6 6.24 line regulation (note1) regline v i = 8.6v to 25v i o = 500ma -560 mv v i = 9v to 13v - 3 60 t j =+25 o c v i = 8.3v to 21v - 5 60 v i = 9v to 13v - 1.5 30 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 9 100 mv i o = 5ma to 1a - 4 100 i o = 250ma to 750ma - 5.0 50 quiescent current i q t j =+25 o c-4.36.0ma quiescent current change ? i q i o = 5ma to 1a - - 0.5 ma v i = 9v to 25v, i o = 500ma - - 0.8 v i = 8.5v to 21v, t j =+25 o c--0.8 output voltage drift ? v/ ? ti o = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz t a =+25 o c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 9v to 19v -65 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 13 electrical characteristics (KA7808a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 14v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 o c 7.84 8 8.16 v i o = 5ma to 1a, p o 15w v i = 10.6v to 23v 7.7 8 8.3 line regulation (note1) regline v i = 10.6v to 25v i o = 500ma -680 mv v i = 11v to 17v - 3 80 t j =+25 o c v i = 10.4v to 23v - 6 80 v i = 11v to 17v - 2 40 load regulation (note1) regload t j =+25 o c i o = 5ma to 1.5a - 12 100 mv i o = 5ma to 1a - 12 100 i o = 250ma to 750ma - 5 50 quiescent current i q t j =+25 o c-5.06.0ma quiescent current change ? i q 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 o c--0.8 output voltage drift ? v/ ? ti o = 5ma - -0.8 - mv/ o c output noise voltage v n f = 10hz to 100khz t a =+25 o c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 11.5v to 21.5v -62 - db dropout voltage v drop i o = 1a, t j =+25 o c-2-v output resistance r o f = 1khz - 18 - m ? short circuit current i sc v i = 35v, t a =+25 o c - 250 - ma peak current i pk t j =+25 o c-2.2-a
ka78xx/ka78xxa 14 electrical characteristics (ka7809a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 15v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 8.82 9.0 9.18 v i o = 5ma to 1a, p o 15w v i = 11.2v to 24v 8.65 9.0 9.35 line regulation (note1) regline v i = 11.7v to 25v i o = 500ma -690 mv v i = 12.5v to 19v - 4 45 t j =+25 c v i = 11.5v to 24v - 6 90 v i = 12.5v to 19v - 2 45 load regulation (note1) regload t j =+25 c i o = 5ma to 1.0a - 12 100 mv i o = 5ma to 1.0a - 12 100 i o = 250ma to 750ma - 5 50 quiescent current i q t j =+25 c-5.06.0ma quiescent current change ? i q v i = 11.7v to 25v, t j =+25 c--0.8 ma v i = 12v to 25v, i o = 500ma - - 0.8 i o = 5ma to 1.0a - - 0.5 output voltage drift ? v/ ? ti o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz t a =+25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 12v to 22v -62 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 15 electrical characteristics (ka7810a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 16v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 9.8 10 10.2 v i o = 5ma to 1a, p o 15w v i =12.8v to 25v 9.6 10 10.4 line regulation (note1) regline v i = 12.8v to 26v i o = 500ma - 8 100 mv v i = 13v to 20v - 4 50 t j =+25 c v i = 12.5v to 25v - 8 100 v i = 13v to 20v - 3 50 load regulation (note1) regload t j =+25 c i o = 5ma to 1.5a - 12 100 mv i o = 5ma to 1.0a - 12 100 i o = 250ma to 750ma - 5 50 quiescent current i q t j =+25 c-5.06.0ma quiescent current change ? i q v i = 13v to 26v, t j =+25 c--0.5 ma v i = 12.8v to 25v, i o = 500ma - - 0.8 i o = 5ma to 1.0a - - 0.5 output voltage drift ? v/ ? t i o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz t a =+25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 14v to 24v -62 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 17 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 16 electrical characteristics (ka7812a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 19v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 11.75 12 12.25 v i o = 5ma to 1a, p o 15w v i = 14.8v to 27v 11.5 12 12.5 line regulation (note1) regline v i = 14.8v to 30v i o = 500ma - 10 120 mv v i = 16v to 22v - 4 120 t j =+25 c v i = 14.5v to 27v - 10 120 v i = 16v to 22v - 3 60 load regulation (note1) regload t j =+25 c i o = 5ma to 1.5a - 12 100 mv i o = 5ma to 1.0a - 12 100 i o = 250ma to 750ma - 5 50 quiescent current i q t j =+25 c-5.16.0ma quiescent current change ? i q v i = 15v to 30v, t j =+25 c- 0.8 ma v i = 14v to 27v, i o = 500ma - 0.8 i o = 5ma to 1.0a - 0.5 output voltage drift ? v/ ? t i o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz t a =+25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 14v to 24v -60 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 18 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 17 electrical characteristics (ka7815a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i =23v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 14.7 15 15.3 v i o = 5ma to 1a, p o 15w v i = 17.7v to 30v 14.4 15 15.6 line regulation (note1) regline v i = 17.9v to 30v i o = 500ma - 10 150 mv v i = 20v to 26v - 5 150 t j =+25 c v i = 17.5v to 30v - 11 150 v i = 20v to 26v - 3 75 load regulation (note1) regload t j =+25 c i o = 5ma to 1.5a - 12 100 mv i o = 5ma to 1.0a - 12 100 i o = 250ma to 750ma - 5 50 quiescent current i q t j =+25 c-5.26.0ma quiescent current change ? i q v i = 17.5v to 30v, t j =+25 c--0.8 ma v i = 17.5v to 30v, i o = 500ma - - 0.8 i o = 5ma to 1.0a - - 0.5 output voltage drift ? v/ ? t i o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz t a =+25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 18.5v to 28.5v -58 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 19 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 18 electrical characteristics (ka7818a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 27v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 17.64 18 18.36 v i o = 5ma to 1a, p o 15w v i = 21v to 33v 17.3 18 18.7 line regulation (note1) regline v i = 21v to 33v i o = 500ma - 15 180 mv v i = 21v to 33v - 5 180 t j =+25 c v i = 20.6v to 33v - 15 180 v i = 24v to 30v - 5 90 load regulation (note1) regload t j =+25 c i o = 5ma to 1.5a - 15 100 mv i o = 5ma to 1.0a - 15 100 i o = 250ma to 750ma - 7 50 quiescent current i q t j =+25 c-5.26.0ma quiescent current change ? i q v i = 21v to 33v, t j =+25 c--0.8 ma v i = 21v to 33v, i o = 500ma - - 0.8 i o = 5ma to 1.0a - - 0.5 output voltage drift ? v/ ? t i o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz t a =+25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 22v to 32v -57 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 19 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 19 electrical characteristics (ka7824a) (refer to the test circuits. 0 o c < t j < +125 o c, i o =1a, v i = 33v, c i =0.33 f, c o =0.1 f, unless otherwise speci- fied) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j =+25 c 23.5 24 24.5 v i o = 5ma to 1a, p o 15w v i = 27.3v to 38v 23 24 25 line regulation (note1) regline v i = 27v to 38v i o = 500ma - 18 240 mv v i = 21v to 33v - 6 240 t j =+25 c v i = 26.7v to 38v - 18 240 v i = 30v to 36v - 6 120 load regulation (note1) regload t j =+25 c i o = 5ma to 1.5a - 15 100 mv i o = 5ma to 1.0a - 15 100 i o = 250ma to 750ma - 7 50 quiescent current i q t j =+25 c-5.26.0ma quiescent current change ? i q v i = 27.3v to 38v, t j =+25 c--0.8 ma v i = 27.3v to 38v, i o = 500ma - - 0.8 i o = 5ma to 1.0a - - 0.5 output voltage drift ? v/ ? t i o = 5ma - -1.5 - mv/ c output noise voltage v n f = 10hz to 100khz t a = 25 c -10 - v/vo ripple rejection rr f = 120hz, i o = 500ma v i = 28v to 38v -54 - db dropout voltage v drop i o = 1a, t j =+25 c-2.0-v output resistance r o f = 1khz - 20 - m ? short circuit current i sc v i = 35v, t a =+25 c - 250 - ma peak current i pk t j =+25 c-2.2-a
ka78xx/ka78xxa 20 typical perfomance characteristics figure 1. quiescent current figure 3. output voltage figure 2. peak output current figure 4. quiescent current i
ka78xx/ka78xxa 21 typical applications figure 5. dc parameters figure 6. load regulation figure 7. ripple rejection figure 8. fixed output regulator input output input output input output input output
ka78xx/ka78xxa 22 figure 9. constant current regulator notes : (1) to specify an output voltage. substitute voltage value for "xx." a common ground is required between the input and the outpu t voltage. the input voltage must remain typically 2.0v above the output voltage even during the low point on the input ripple voltage. (2) c i is required if regulator is located an appreciable distance from power supply filter. (3) c o improves stability and transient response. v o = v xx (1+r 2 /r 1 )+i q r 2 figure 10. circuit for increasing output voltage i ri 5 i q v o = v xx (1+r 2 /r 1 )+i q r 2 figure 11. adjustable output regulator (7 to 30v) input output c i c o input output c i c o i ri 5iq input output c i c o
ka78xx/ka78xxa 23 figure 12. high current voltage regulator figure 13. high output current with short circuit protection figure 14. tracking voltage regulator input output input output
ka78xx/ka78xxa 24 figure 15. split power supply ( 15v-1a) figure 16. negative output voltage circuit figure 17. switching regulator input output input output
ka78xx/ka78xxa 25 mechanical dimensions package 4.50 0.20 9.90 0.20 1.52 0.10 0.80 0.10 2.40 0.20 10.00 0.20 1.27 0.10 ?.60 0.10 (8.70) 2.80 0.10 15.90 0.20 10.08 0.30 18.95max. (1.70) (3.70) (3.00) (1.46) (1.00) (45 ) 9.20 0.20 13.08 0.20 1.30 0.10 1.30 +0.10 ?.05 0.50 +0.10 ?.05 2.54typ [2.54 0.20 ] 2.54typ [2.54 0.20 ] to-220
ka78xx/ka78xxa 26 mechancal dimensions (continued) package 6.60 0.20 2.30 0.10 0.50 0.10 5.34 0.30 0.70 0.20 0.60 0.20 0.80 0.20 9.50 0.30 6.10 0.20 2.70 0.20 9.50 0.30 6.10 0.20 2.70 0.20 min0.55 0.76 0.10 0.50 0.10 1.02 0.20 2.30 0.20 6.60 0.20 0.76 0.10 (5.34) (1.50) (2xr0.25) (5.04) 0.89 0.10 (0.10) (3.05) (1.00) (0.90) (0.70) 0.91 0.10 2.30typ [2.30 0.20] 2.30typ [2.30 0.20] max0.96 (4.34) (0.50) (0.50) d-pak
ka78xx/ka78xxa 27 ordering information product number output voltage tolerance package operating temperature ka7805 / ka7806 4% to-220 0 ~ + 125 c KA7808 / ka7809 ka7810 ka7812 / ka7815 ka7818 / ka7824 ka7805a / ka7806a 2% KA7808a / ka7809a ka7810a / ka7812a ka7815a / ka7818a ka7824a ka7805r / ka7806r 4% d-pak KA7808r / ka7809r ka7812r
ka78xx/ka78xxa 6/1/01 0.0m 001 stock#dsxxxxxxxx ? 2001 fairchild semiconductor corporation life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.

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