mc78xxct series vishay semiconductor document number 74813 www.vishay.com 29-nov-01 1 new product 3-terminal fixed positive voltage regulators description these voltage regulators are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications including local, on-card regulation. these regulators employ internal current limiting, thermal shut- down, and safe-area compensation. with adequate heatsinking the mc78xxct can deliver output currents in excess of 1.5 ampere. although designed primarily as a fixed voltage regu lator, these devices can be used with external components to obtain adjustable voltages with currents. features ?output current in excess of 1.0 ampere ?no external components required ?internal thermal overload protection ?internal short-circuit current limiting ?output transistor safe-area compensation ?output voltage offered in 2% tolerance mechanical data case: to-220 package case outline is on the back page. gnd input 1 output 3 2 reference voltage starting circuit error amplifier current generator soa protection thermal protection series pass element internal block diagram output input cin 0.33 f mc78xx co 0.1 f standard application notes: a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0v above the output voltage even during the low point on the input ripple voltage. xx = these two digits of the part number indicate output voltage. cin is required if regulator is located an appreciable distance from power supply filter. co is not needed for stability, however, it does improve transient response. 1 2 3 mc78xxct to-220ab pin definition 1. input 2. ground 3. output (heatsink/ tab connected to pin 2)
mc78xxct series vishay semiconductor www.vishay.com document number 74813 2 29-nov-01 electrical characteristics mc7805 vin = 10v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 4.90 5 5.10 v 7v vin 20v, 4.85 5.15 5ma i out 1.0a, p d 15w line regulation ? reg line 7v vin < 25v 3 100 mv (t j = 25 c) 8v vin < 13v 150 load regulation ? reg load 10ma i out < 1.5a 15 100 mv (t j = 25 c) 250ma i out < 750ma 550 quiescent current i q i out = 0, t j = 25 c 4.2 8 ma quiescent current change ? i q 7v vin 25v 1.3 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 40 v ripple rejection ratio rr f = 120hz 62 78 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 17 m ? output short circuit current i os t j = 25 c 750 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1.1 mv/ c maximum ratings ratings at 25 c ambient temperature unless otherwise specified. parameter symbol value unit input voltage (1) v in 30 v input voltage (2) v in 40 v thermal resistance (3) r jc 5 c/w operating junction temperature range t j 20 to +150 c storage junction temperature range t stg 65 to +150 c notes: (1) mc7805 to mc7818 (2) mc7824 (3) follow the derating curve (fig. 1)
mc78xxct series vishay semiconductor document number 74813 www.vishay.com 29-nov-01 3 electrical characteristics mc7806 vin = 11v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 5.88 6.0 6.12 v 8v vin 21v, 5.83 6.17 5ma i out 1.0a, p d 15w line regulation ? reg line 8v vin < 25v 5 120 mv (t j = 25 c) 9v vin < 13v 1.5 60 load regulation ? reg load 10ma i out < 1.5a 14 120 mv (t j = 25 c) 250ma i out < 750ma 460 quiescent current i q i out = 0, t j = 25 c 4.3 8.0 ma quiescent current change ? i q 8v vin 25v 1.3 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t a =25 c 45 v ripple rejection ratio rr f = 120hz, 9v vin 19v 59 75 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 19 m ? output short circuit current i os t j = 25 c 550 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 0.8 mv/ c electrical characteristics mc7808 vin = 14v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 7.84 8.0 8.16 v 10.5v vin 23v, 7.74 8.26 5ma i out 1.0a, p d 15w line regulation ? reg line 10.5v vin < 25v 6 160 mv (t j = 25 c) 11v vin < 15v 280 load regulation ? reg load 10ma i out < 1.5a 12 160 mv (t j = 25 c) 250ma i out < 750ma 480 quiescent current i q i out = 0, t j = 25 c 4.3 8.0 ma quiescent current change ? i q 10.5v vin 25v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 52 v ripple rejection ratio rr f = 120hz 56 72 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 16 m ? output short circuit current i os t j = 25 c 450 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 0.8 mv/ c
mc78xxct series vishay semiconductor www.vishay.com document number 74813 4 29-nov-01 electrical characteristics mc7809 vin = 15v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 8.82 9 9.18 v 11.5v vin 24v, 8.77 9.23 5ma i out 1.0a, p d 15w line regulation ? reg line 11.5v vin < 27v 6 160 mv (t j = 25 c) 12v vin < 16v 280 load regulation ? reg load 5ma i out < 1.5a 12 160 mv (t j = 25 c) 250ma i out < 750ma 480 quiescent current i q i out = 0, t j = 25 c 4.3 8 ma quiescent current change ? i q 11.5v vin 27v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 52 v ripple rejection ratio rr f = 120hz,12v vin 22v 55 72 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 16 m ? output short circuit current i os t j = 25 c 450 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1 mv/ c electrical characteristics mc7810 vin = 16v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 9.8 10 10.2 v 12.5v vin 25v, 9.75 10.25 5ma i out 1.0a, p d 15w line regulation ? reg line 12.5v vin < 28v 10 240 mv (t j = 25 c) 13v vin < 17v 3 120 load regulation ? reg load 10ma i out < 1.5a 12 240 mv (t j = 25 c) 250ma i out < 750ma 4 120 quiescent current i q i out = 0, t j = 25 c 4.3 8 ma quiescent current change ? i q 12.5v vin 28v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 52 v ripple rejection ratio rr f = 120hz, 13v vin 23v 54 72 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 16 m ? output short circuit current i os t j = 25 c 450 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1 mv/ c
mc78xxct series vishay semiconductor document number 74813 www.vishay.com 29-nov-01 5 electrical characteristics mc7812 vin = 19v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 11.76 12.0 12.24 v 14.5v vin 27v, 11.66 12.34 5ma i out 1.0a, p d 15w line regulation ? reg line 14v vin < 30v 10 240 mv (t j = 25 c) 15v vin < 19v 3 120 load regulation ? reg load 10ma i out < 1.5a 12 240 mv (t j = 25 c) 250ma i out < 750ma 4 120 quiescent current i q i out = 0, t j = 25 c 4.3 8 ma quiescent current change ? i q 14.5v vin 30v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 75 v ripple rejection ratio rr f = 120hz,15v vin 25v 55 71 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 18 m ? output short circuit current i os t j = 25 c 350 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1 mv/ c electrical characteristics mc7815 vin = 23v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 14.7 15.0 15.3 v 17.5v vin 30v, 14.55 15.45 5ma i out 1.0a, p d 15w line regulation ? reg line 17.5v vin < 30v 11 300 mv (t j = 25 c) 13v vin < 17v 3 150 load regulation ? reg load 10ma i out < 1.5a 12 300 mv (t j = 25 c) 250ma i out < 750ma 4 150 quiescent current i q i out = 0, t j = 25 c 4.4 8 ma quiescent current change ? i q 17.5v vin 30v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 90 v ripple rejection ratio rr f = 120hz, 18v vin 28v 54 70 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 19 m ? output short circuit current i os t j = 25 c 230 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1 mv/ c
mc78xxct series vishay semiconductor www.vishay.com document number 74813 6 29-nov-01 electrical characteristics mc7818 vin = 27v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 17.64 18.0 18.36 v 21v vin 33v, 17.44 18.56 5ma i out 1.0a, p d 15w line regulation ? reg line 21v vin < 33v 15 360 mv (t j = 25 c) 22v vin < 26v 5 180 load regulation ? reg load 10ma i out < 1.5a 12 360 mv (t j = 25 c) 250ma i out < 750ma 4 180 quiescent current i q i out = 0, t j = 25 c 4.5 8 ma quiescent current change ? i q 21v vin 33v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 110 mv ripple rejection ratio rr f = 120hz,21v vin 31v 53 69 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 22 m ? output short circuit current i os t j = 25 c 200 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1 mv/ c electrical characteristics mc7824 vin = 33v, i out = 500ma, 0? t j 125?, cin = 0.33 f, c out = 0.1 f; unless otherwise noted. parameter symbol conditions min. typ. max. unit output voltage v out t j = 25 c 23.52 24.0 24.48 v 26v vin 38v, 23.32 24.68 5ma i out 1.0a, p d 15w line regulation ? reg line 26v vin < 38v 18 480 mv (t j = 25 c) 27v vin < 32v 6 240 load regulation ? reg load 10ma i out < 1.5a 12 480 mv (t j = 25 c) 250ma i out < 750ma 4 240 quiescent current i q i out = 0, t j = 25 c 4.6 8 ma quiescent current change ? i q 26v vin 38v 1 ma 5ma i out 1.0a 0.5 output noise voltage vn 10hz f 100khz,t j =25 c 170 v ripple rejection ratio r rej f = 120hz, 26v vin 36v 50 66 db dropout voltage v drop i out = 1.0a, t j = 25 c 2 v output resistance r out f = 1khz 28 m ? output short circuit current i os t j = 25 c 150 ma peak output current i o peak t j = 25 c 1.5 a temperature coefficient of output voltage ? v out / ? t j i out = 5ma, 0 c t j 125 c 1.5 mv/ c
mc78xxct series vishay semiconductor document number 74813 www.vishay.com 29-nov-01 7 ratings and characteristic curves (t a = 25 c unless otherwise noted) 8.0 16 20 12 0 25 50 75 100 125 150 fig. 1 power dissipation vs. ambient temperature (mc78xxct) power dissipation (w) ambient temperatue ( c) 4.0 0 0.5 1.0 1.5 2.0 0 25 50 75 100 125 fig. 2 dropout voltage vs. junction temperature v in -- v out, input - output voltage differential (v) 2.5 0 6.0 12 18 24 30 fig. 3 peak output current i o -- output current (a) input -- output voltage differential (v) 0.75 1.50 2.25 3.00 4.0 6.0 8.0 10 12 14 16 18 20 22 24 fig. 4 ripple rejection ratio vs. output voltage rr -- ripple rejection (db) v o -- output voltage (v) 40 50 60 70 80 4.0 8.0 12 16 20 24 fig. 5 output impedance (m ? ) vs. output voltage v o -- output voltage (v) 10 100 1000 0 f = 120hz i o = 20ma ? vin = 1.0v (rms) i o = 500ma i o = 200ma i o = 20ma i o = 0ma i o = 1.0a f = 120hz i o = 500ma c l = ouf jc = 5 c/w ja = 65 c/w t j (max) = 150 c hs = 5 c/w hs = 15 c/w no heatsink t j = --40 c t j = 0 c t j = 25 c t j = 125 c part # / v in 7805 / 10v 7806 / 11v 7808 / 14v 7812 / 19v 7815 / 23v 7818 / 27v 7824 / 33v --75 --50 --25 0 25 50 100 125 150 175 200 fig. 6 output voltage vs. junction temperature v o -- output voltage (v) t j -- junction temperature ( c) 5.90 6.00 6.10 6.20 5.80 v in = 10v v o = 6.0v i o = 20ma
mc78xxct series vishay semiconductor www.vishay.com document number 74813 8 29-nov-01 ratings and characteristic curves (t a = 25 c unless otherwise noted) 0255075 --75 --50 --25 100 125 i b -- quiescent current (ma) t j -- junction temperature ( c) 1.0 2.0 3.0 4.0 5.0 4.0 2.0 0 6.0 8.0 10 12 14 16 v o -- output voltage (v) v i -- input voltage (v) 0 2.0 4.0 6.0 8.0 0 i o = 10ma i o = 500ma v in = 10v v o = 5.0v i o = 20ma v in = 10v v o = 5.0v i o = 5.0ma i o = 1.0a mc78xxc mc7805 t j = 25 c mc78xx fig. 7 quiescent current vs. junction temperature fig. 8 output voltage vs. input voltage
mc78xxct series vishay semiconductor document number 74813 www.vishay.com 29-nov-01 9 13.9 0.41 2.53 0.185 3.84 0.6 dia. 10.25 0.25 28.7 0.92 3.94 0.375 2.69 0.25 0.8 0.12 1.3 0.185 1.27 0.12 2.55 0.375 4.85 0.375 0.387 0.09 8.54 0.26 6.26 0.25 14.8 0.51 to-220 case outline dimensions in millimeters
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