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?2000 fairchild semiconductor international www.fairchildsemi.com rev. 5.0 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 safe operating area (soa)protection description the mc78mxx/lm78mxx series of three-terminal posi- tive regulators are available in the to-220/d-pak package with several fixed output voltages making it useful in a wide range of applications. to-220 d-pak 1. input 2. gnd 3. output 1 1 internal block digram mc78mxx/lm78mxx 3-terminal 0.5a positive voltage regulator
mc78mxx/lm78mxx 2 absolute maximum ratings electrical characteristics (mc78m05/lm78m05) (refer to the test circuits, 0 < t j < +125 c, i o =350ma, v i =10v, unless otherwise specified, c i = 0.33 f, c o =0.1 f) notes: *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 jc 5 c/w thermal resistance junction-air (to-220 package) r ja 65 c/w operating temperature range mc78mxx/lm78mxx t opr 0~ + 125 c storage temperature range t stg -65~ + 150 c parameter symbol conditions min. typ. max. unit 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 ? v o i o = 200ma t j =+25 c v i = 7 to 25v - - 100 mv v i = 8 to 25v - - 50 load regulation ? 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-4.06ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 8 to 25v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 40 - v 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 3 electrical characteristics (mc78m06) (refer to the test circuits, 0 t j +125 c, i o =350ma, v i =11v, unless otherwise specified, c i = 0.33 f, c o =0.1 f) notes: *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 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 ? v o i o = 200ma t j =+25 c v i = 8 to 25v - - 100 mv v i = 9 to 25v - - 50 load regulation ? 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-4.06ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 9 to 25v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 45 - v 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 4 electrical characteristics (mc78m08) (refer to the test circuits, 0 t j +125 c, i o =350ma, v i =14v, unless otherwise specified, c i =0.33 f, c o =0.1 f) notes: *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 c7.788.3 v i o = 5 to 350ma v i = 10.5 to 23v 7.6 8 8.4 line regulation ? 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 ? 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-4.06ma quiescent current change ? 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 - v 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 5 electrical characteristics (MC78M12) (refer to the test circuits, 0 t j 125 c, i o =350ma, v i =19v, unless otherwise specified, c i =0.33 f, c o =0.1 f) notes: *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 11.5 12 12.5 v i o = 5 to 350ma v i = 14.5 to 27v 11.5 12 12.6 line regulation ? 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 ? 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-4.16ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 14.5 to 30v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 0.5 - mv/ c output noise voltage v n f = 10hz to 100khz - 75 - v 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 6 electrical characteristics (mc78m15) (refer to the test circuits, 0 < t j < +125 c, i o =350ma, v i =23v, unless otherwise specified, c i = 0.33 f, c o =0.1 f ) notes: *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 14.4 15 15.6 v i o = 5 to 350ma v i = 17.5 to 30v 14.25 15 15.75 line regulation ? 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 ? 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-4.16ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 17.5 to 30v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 1-mv/ c output noise voltage v n f = 10hz to 100khz - 100 - v 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 7 electrical characteristics (mc78m18) (refer to the test circuits, 0 t j +125 c, i o =350ma, v i =26v, unless otherwise specified, c i = 0.33 f, c o =0.1 f) notes: *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 17.3 18 18.7 v i o = 5 to 350ma v i = 20.5 to 33v 17.1 18 18.9 line regulation ? v o i o = 200ma t j =+25 c v i = 21 to 33v - - 100 mv v i = 24 to 33v - - 50 load regulation ? v 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-4.26ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 21 to 33v --0.8 output voltage drift ? v/ ? ti o =5mat j =0 to 125 c- ? 1.1 - mv/ c output noise voltage v n f=10hz to 100khz - 100 - v ripple rejection rr f=120hz, i o =300ma , v i =22 to 32v 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 8 electrical characteristics (mc78m20) (refer to the test circuits, 0 t j +125 c, i o =350ma, v i =29v, unless otherwise specified, c i = 0.33 f, c o =0.1 f ) notes : *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 19.2 20 20.8 v i o = 5 to 350ma v i = 23 to 35v 19 20 21 line regulation ? v o i o = 200ma t j =+25 c v i = 23 to 35v - - 100 mv v i = 24 to 35v - - 50 load regulation ? 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-4.26ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 23 to 35v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 1.1 - mv/ c output noise voltage v n f = 10hz to 100khz - 110 - v 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 9 electrical characteristics (mc78m24) (refer to the test circuits, 0 t j +125 c, i o =350ma, v i =33v, unless otherwise specified, c i = 0.33 f, c o =0.1 f ) notes: *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 c232425 v i o = 5 to 350ma v i = 27 to 38v 22.8 24 25.2 line regulation ? v o i o = 200ma t j =+25 c v i = 27 to 38v - - 100 mv v i = 28 to 38v - - 50 load regulation ? 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-4.26ma quiescent current change ? i q i o = 5ma to 350ma - - 0.5 ma i o = 200ma v i = 27 to 38v --0.8 output voltage drift ? v/ ? t i o = 5ma t j = 0 to +125 c - ? 1.2 - mv/ c output noise voltage v n f = 10hz to 100khz - 170 - v 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 10 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 v i v o mc78mxx lm78mxx v i lm78mxx mc78mxx lm78mxx mc78mxx
mc78mxx/lm78mxx 11 figure 4. adjustable output regulator (7 to 30v) figure 5. 0.5 to 10v regulator mc78m05 lm78m05 lm741 lm741 mc78m05 lm78m05
mc78mxx/lm78mxx 12 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
mc78mxx/lm78mxx 13 mechanical 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
mc78mxx/lm78mxx 14 ordering information product number package operating temperature lm78m05ct to-220 0 ~ + 125 c product number package operating temperature mc78m05ct to-220 0 ~ + 125 c mc78m06ct mc78m08ct MC78M12ct mc78m15ct mc78m18ct mc78m20ct mc78m24ct mc78m05cdt d-pak mc78m08cdt MC78M12cdt
mc78mxx/lm78mxx 15
mc78mxx/lm78mxx 7/12/00 0.0m 001 stock#dsxxxxxxxx ? 2000 fairchild semiconductor international 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 international. 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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