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fixed voltage regulator (positive) ?000 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.0 features output current up to 0.5a output voltages of 5, 6, 8, 10, 12, 15, 18, 20, 24v thermal overload protection short circuit protection output transistor soa protection industrial and commercial temperature range description the mc78mxx (lm78mxx) (ka78mxx) series of three- terminal positive regulators are available in the to-220/ d-pak package with several ?ed output voltages making it useful in a wide range of applications. to-220 d-pak 1. input 2. gnd 3. output mc78mxx (lm78mxx) (ka78mxx) 3-terminal 0.5a positive voltage regulators
mc78mxx (lm78mxx) (ka78mxx) 2 fixed voltage regulator (positive) internal block diagram
mc78mxx (lm78mxx) (ka78mxx) 3 fixed voltage regulator (positive) absolute maximum ratings (ta=+25 c, unless otherwise speci?d) ka78m05/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =10v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf ) note: 1. t min < t j < t max ka78mxx/rl: t min = -40 c, t max = +125 c ka78mxx/r: t min = 0 c, t max = +125 c 2. 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 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 r q jc 5 c/w thermal resistance junction-air r q ja 65 c/w operating temperature range ka78mxxi/ri ka78mxx/r t opr -40~ + 125 0~ + 125 c c storage temperature range t stg -65~ + 150 c parameter symbol conditions min. typ. max. units output voltage v o t j =+25 c 4.8 5 5.2 v i o = 5 to 350ma v i = 7 to 20v 4.75 5 5.25 line regulation d v o i o = 200ma t j =+25 c v i = 7 to 25v - - 100 mv v i = 8 to 25v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 100 mv i o = 5ma to 200ma, t j =+25 c- - 50 quiescent current i q t j =+25 c - 4.0 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 8 to 25v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 40 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 8 to 18v 62 - - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j =+25 c, v i = 35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 4 fixed voltage regulator (positive) ka78m06/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =11v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) ( note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o tj=+25 c 5.75 6 6.25 v i o = 5 to 350ma v i = 8 to 21v 5.7 6 6.3 line regulation d v o i o = 200ma t j =+25 c v i = 8 to 25v - - 100 mv v i = 9 to 25v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 120 mv i o = 5ma to 200ma, t j =+25 c- -60 quiescent current i q t j =+25 c - 4.0 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 9 to 25v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 45 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 9 to 19v 59 - - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 5 fixed voltage regulator (positive) ka78m08/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =14v, unless otherwise speci?d, c i =0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j =+25 c 7.7 8 8.3 v i o = 5 to 350ma v i = 10.5 to 23v 7.6 8 8.4 line regulation d v o i o = 200ma t j =+25 c v i = 10.5 to 25v - - 100 mv v i = 11 to 25v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 160 mv i o = 5ma to 200ma, t j =+25 c- - 80 quiescent current i q t j =+25 c - 4.0 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 10.5 to 25v - - 0.8 output voltage drift rr i o = 5ma t j = 0 to +125 c - - 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 52 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 9 to 19v 56 - - db dropout voltage v d t j =+25 c,i o = 500ma - 2 - v short circuit current i sc t j =+25 c, v i = 35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 6 fixed voltage regulator (positive) ka78m10/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =17v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j = +25 c 9.6 10 10.4 v i o = 5 to 350ma v i = 12.5 to 25v 9.5 10 10.5 line regulation d v o i o = 200ma t j =+25 c v i = 12.5 to 25v - - 100 mv v i = 13 to 25v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 200 mv i o = 5ma to 200ma, t j =+25 c - - 100 quiescent current i q t j =+25 c - 4.1 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 12.5 to 25v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 65 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 13 to 23v 55 - - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 7 fixed voltage regulator (positive) ka78m12/i/r/ri electrical characteristics (refer to the test circuits, t min t j 125 c, i o =350ma, v i =19v, unless otherwise speci?d, c i =0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j =+25 c 11.5 12 12.5 v i o = 5 to 350ma v i = 14.5 to 27v 11.5 12 12.6 line regulation d v o i o = 200ma t j =+25 c v i = 14.5 to 30v - - 100 mv v i = 16 to 30v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 240 mv i o = 5ma to 200ma, t j =+25 c - - 120 quiescent current i q t j =+25 c - 4.1 6 ma quiescent current change d i q i o = 5ma to 350ma - 0.5 ma i o = 200ma v i = 14.5 to 30v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 75 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 15 to 25v 55 - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j = +25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 8 fixed voltage regulator (positive) ka78m15/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =23v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j =+25 c 14.4 15 15.6 v i o = 5 to 350ma v i = 17.5 to 30v 14.25 15 15.75 line regulation d v o i o = 200ma t j =+25 c v i = 17.5 to 30v - - 100 mv v i = 20 to 30v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 300 mv i o = 5ma to 200ma, t j =+25 c - - 150 quiescent current i q t j =+25 c - 4.1 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 17.5 to 30v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 1 - mv/ c output noise voltage v n f = 10hz to 100khz - 100 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 18.5 to 28.5v 54 db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j = + 25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 9 fixed voltage regulator (positive) ka78m18/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =26v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/r: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j =+25 c 17.3 18 18.7 v i o = 5 to 350ma v i = 20.5 to 33v 17.1 18 18.9 line regulation d v o i o = 200ma v i = 21 to 33v - - 100 mv t j =+25 cv i = 24 to 33v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 360 mv i o = 5ma to 200ma, t j =+25 c - - 180 quiescent current i q t j =+25 c - 4.2 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 21 to 33v - - 0.8 output voltage drift d v/ d ti o =5ma t j =0 to 125 c - -1.1 - mv/ c output noise voltage v n f=10hz to 100khz 100 - m v/v o ripple rejection rr f=120hz, i o =300ma 53 - db dropout voltage v d t j =+25 c, i o =500ma - 2 - v short circuit current i sc t j =+25 c, v i =35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 10 fixed voltage regulator (positive) ka78m20/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =29v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j = +25 c 19.2 20 20.8 v i o = 5 to 350ma v i = 23 to 35v 19 20 21 line regulation d v o i o = 200ma t j =+25 c v i = 23 to 35v - - 100 mv v i = 24 to 35v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 400 mv i o = 5ma to 200ma, t j =+25 c - - 200 quiescent current i q t j =+25 c - 4.2 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 23 to 35v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - -1.1 - mv/ c output noise voltage v n f = 10hz to 100khz - 110 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 24 to 34v 53 - - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j = +25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 11 fixed voltage regulator (positive) ka78m24/i/r/ri electrical characteristics (refer to the test circuits, t min t j +125 c, i o =350ma, v i =33v, unless otherwise speci?d, c i = 0.33mf, c o =0.1mf) note: 1. t min : ka78mxx/ri: t min = -40 c ka78mxx/r: t min = 0 c 2. 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. units output voltage v o t j =+25 c232425v i o = 5 to 350ma v i = 27 to 38v 22.8 24 25.2 line regulation d v o i o = 200ma t j =+25 c v i = 27 to 38v - - 100 mv v i = 28 to 38v - - 50 load regulation d v o i o = 5ma to 0.5a, t j =+25 c - - 480 mv i o = 5ma to 200ma, t j =+25 c - - 240 quiescent current i q t j =+25 c - 4.2 6 ma quiescent current change d i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 27 to 38v - - 0.8 output voltage drift d v/ d ti o = 5ma t j = 0 to +125 c - - 1.2 - mv/ c output noise voltage v n f = 10hz to 100khz - 170 - mv/v o ripple rejection rr f = 120hz, i o = 300ma v i = 28 to 38v 50 - - db dropout voltage v d t j =+25 c, i o = 500ma - 2 - v short circuit current i sc t j = +25 c, v i = 35v - 300 - ma peak current i pk t j =+25 c - 700 - ma
mc78mxx (lm78mxx) (ka78mxx) 12 fixed voltage regulator (positive) typical applications figure 1. fixed output regulator figure 2. constant current regulator notes: 1. to specify an output voltage, substitute voltage value for "xx" 2. although no output capacitor is needed for stability, it does improve transient response. 3. required if regulator is located an appreciable distance from power supply filter figure 3. circuit for increasing output voltage
mc78mxx (lm78mxx) (ka78mxx) 13 fixed voltage regulator (positive) figure 4. adjustable output regulator (7 to 30v) figure 5. 0.5 to 10v regulator
mc78mxx (lm78mxx) (ka78mxx) 14 fixed voltage regulator (positive) ordering information device package operating temperature mc78mxxct (lm78xxct) (ka78mxx) to-220 0 ~ + 125 c ka78mxxi -40 ~ +125 c mc78mxxcdt (ka78mxxr) d-pak 0 ~ + 125 c ka78mxxri -40 ~ + 125 c
mc78mxx (lm78mxx) (ka78mxx) 15 fixed voltage regulator (positive) package dimensions
mc78mxx (lm78mxx) (ka78mxx) 16 fixed voltage regulator (positive) package dimensions (continued)
mc78mxx (lm78mxx) (ka78mxx) 17 fixed voltage regulator (positive)
mc78mxx (lm78mxx) (ka78mxx) fixed voltage regulator (positive) 1/18/00 0.0m 001 stock#dsxxxxxxxx 1999 fairchild semiconductor corporation life support policy fairchild? 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

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