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d2t suffix plastic package case 936 (d 2 pak) threeterminal positive fixed voltage regulators standard application a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0 v above the output voltage even during the low point on the input ripple voltage. xx, these two digits of the type number indicate nominal voltage. * * c in is required if regulator is located an appreciable distance from power supply filter. ** c o is not needed for stability; however, it does improve transient response. values of less than 0.1 m f could cause instability. mc78xx input c in * 0.33 m f c o ** output pin 1. input 2. ground 3. output t suffix plastic package case 221a heatsink surface connected to pin 2. heatsink surface (shown as terminal 4 in case outline drawing) is connected to pin 2. 3 1 2 3 1 2 1 motorola analog ic device data these voltage regulators are monolithic integrated circuits designed as fixedvoltage regulators for a wide variety of applications including local, oncard regulation. these regulators employ internal current limiting, thermal shutdown, and safearea compensation. with adequate heatsinking they can deliver output currents in excess of 1.0 a. although designed primarily as a fixed voltage regulator , these devices can be used with external components to obtain adjustable voltages and currents. ? output current in excess of 1.0 a ? no external components required ? internal thermal overload protection ? internal short circuit current limiting ? output transistor safearea compensation ? output voltage offered in 2% and 4% tolerance ? available in surface mount d 2 pak and standard 3lead transistor packages device type/nominal output voltage mc7805 mc7806 mc7808 mc7809 5.0 v 6.0 v 8.0 v 9.0 v mc7812 mc7815 mc7818 mc7824 12 v 15 v 18 v 24 v ordering information device output voltage tolerance tested operating temperature range package mc78xxact 2% t j = 0 to +125 c insertion mount mc78xxacd2t 2% t j = 0 to +125 c surface mount mc78xxct 4% t j = 0 to +125 c insertion mount mc78xxcd2t 4% surface mount mc78xxbt 4% t j = 40 to +125 c insertion mount mc78xxbd2t t j = 40 to +125 c surface mount xx indicates nominal voltage. ? motorola, inc. 1995 rev 4
MC7800 series 2 motorola analog ic device data maximum ratings (t a = 25 c unless otherwise noted.) rating symbol value unit input voltage (5.0 18 v) (24 v) v i 35 40 vdc power dissipation case 221a t a = 25 c p d internally limited w thermal resistance, junctiontoambient r q ja 65 c/w thermal resistance, junctiontocase r q jc 5.0 c/w case 936 (d 2 pak) t a = 25 c p d internally limited w thermal resistance, junctiontoambient r q ja see figure 13 c/w thermal resistance, junctiontocase r q ja 5.0 c/w storage junction temperature range t stg 65 to +150 c operating junction temperature t j +150 c r 15 680 r 18 100 k d 1 zener r 1 10.66 k r 2 1.56 k r 17 9.0 k q 7 qnpn lat q 17 q 9 qnpn 2 q 8 qnpn q 14 qnpn q 6 qnpn q 5 qnpn 2 lat 3a q 18 r 5 4.5 k r 6 1.0 k q 13 qnpn q 2 qnpn 4 sub q11 2 r 11 15 k qnpn 6 q 1 r 7 14 k r 3 1.8 k r 8 5.0 k diode q 16 q 4 qnpn n+ c 1 30p c 2 3.0p r 9 3.0 k r 16 600 r 20 17500 q 15 qnpn q 10 qnpn r 22 100 q 12 qnpn r 24 50 1.0p r 21 600 r 23 0.2 r 19 27.5 k d 2 zener q 19 qnpn r 14 1.0 k q 20 qnpn r 28 9.0 k r 27 9.0 k r 29 9.0 k r 25 6.0 k r 26 3.0 k r 12 3.0 k r 10 3340(3316act) r 30 18 k sense v out 5.01 v in r 13 11660 q 3 qnpn MC7800 c 3 representative schematic diagram this device contains 22 active transistors.
MC7800 series 3 motorola analog ic device data electrical characteristics (v in = 10 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7805b mc7805c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 4.8 5.0 5.2 4.8 5.0 5.2 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 7.0 vdc v in 20 vdc 8.0 vdc v in 20 vdc v o 4.75 5.0 5.25 4.75 5.0 5.25 vdc line regulation, t j = 25 c (note 2) 7.0 vdc v in 25 vdc 8.0 vdc v in 12 vdc reg line 5.0 1.3 100 50 5.0 1.3 100 50 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.3 0.15 100 50 1.3 0.15 100 50 mv quiescent current (t j = 25 c) i b 3.2 8.0 3.2 8.0 ma quiescent current change 7.0 vdc v in 25 vdc 8.0 vdc v in 25 vdc 5.0 ma i o 1.0 a d i b 1.3 0.5 1.3 0.5 ma ripple rejection 8.0 vdc v in 18 vdc, f = 120 hz rr 68 68 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 0.9 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 0.3 0.3 mv/ c electrical characteristics (v in = 10 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7805ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 4.9 5.0 5.1 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 7.5 vdc v in 20 vdc v o 4.8 5.0 5.2 vdc line regulation (note 2) 7.5 vdc v in 25 vdc, i o = 500 ma 8.0 vdc v in 12 vdc 8.0 vdc v in 12 vdc, t j = 25 c 7.3 vdc v in 20 vdc, t j = 25 c reg line 5.0 1.3 1.3 4.5 50 50 25 50 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 1.3 0.8 0.15 100 100 50 mv quiescent current (t j = 25 c) i b 3.2 6.0 6.0 ma quiescent current change 8.0 vdc v in 25 vdc, i o = 500 ma 7.5 vdc v in 20 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 4 motorola analog ic device data electrical characteristics (continued) (v in = 10 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7805ac characteristic symbol min typ max unit ripple rejection 8.0 vdc v in 18 vdc, f = 120 hz, i o = 500 ma rr 68 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance (f = 1.0 khz) r o 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 0.3 mv/ c electrical characteristics (v in = 11 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7806b mc7806c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 5.75 6.0 6.25 5.75 6.0 6.25 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 8.0 vdc v in 21 vdc 9.0 vdc v in 21 vdc v o 5.7 6.0 6.3 5.7 6.0 6.3 vdc line regulation, t j = 25 c (note 2) 8.0 vdc v in 25 vdc 9.0 vdc v in 13 vdc reg line 5.5 1.4 120 60 5.5 1.4 120 60 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.3 0.2 120 60 1.3 0.2 120 60 mv quiescent current (t j = 25 c) i b 3.3 8.0 3.3 8.0 ma quiescent current change 8.0 vdc v in 25 vdc 9.0 vdc v in 25 vdc 5.0 ma i o 1.0 a d i b 1.3 0.5 1.3 0.5 ma ripple rejection 9.0 vdc v in 19 vdc, f = 120 hz rr 65 65 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 0.9 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 0.3 0.3 mv/ c notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 5 motorola analog ic device data electrical characteristics (v in = 11 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7806ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 5.88 6.0 6.12 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 8.6 vdc v in 21 vdc v o 5.76 6.0 6.24 vdc line regulation (note 2) 8.6 vdc v in 25 vdc, i o = 500 ma 9.0 vdc v in 13 vdc 9.0 vdc v in 13 vdc, t j = 25 c 8.3 vdc v in 21 vdc, t j = 25 c reg line 5.0 1.4 1.4 4.5 60 60 30 60 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 1.3 0.9 0.2 100 100 50 mv quiescent current t j = 25 c i b 3.3 6.0 6.0 ma quiescent current change 9.0 vdc v in 25 vdc, i o = 500 ma 8.6 vdc v in 21 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma ripple rejection 9.0 vdc v in 19 vdc, f = 120 hz, i o = 500 ma rr 65 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance (f = 1.0 khz) r o 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 0.3 mv/ c electrical characteristics (v in = 14 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7808b mc7808c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 7.7 8.0 8.3 7.7 8.0 8.3 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 10.5 vdc v in 23 vdc 11.5 vdc v in 23 vdc v o 7.6 8.0 8.4 7.6 8.0 8.4 vdc line regulation, t j = 25 c, (note 2) 10.5 vdc v in 25 vdc 11 vdc v in 17 vdc reg line 6.0 1.7 160 80 6.0 1.7 160 80 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.4 .22 160 80 1.4 .22 160 80 mv quiescent current (t j = 25 c) i b 3.3 8.0 3.3 8.0 ma notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 6 motorola analog ic device data electrical characteristics (continued) (v in = 14 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7808b mc7808c characteristic symbol min typ max min typ max unit quiescent current change 10.5 vdc v in 25 vdc 11.5 vdc v in 25 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 1.0 0.5 ma ripple rejection 11.5 vdc v in 18 vdc, f = 120 hz rr 62 62 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 0.9 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 0.4 0.4 mv/ c electrical characteristics (v in = 14 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7808ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 7.84 8.0 8.16 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 10.6 vdc v in 23 vdc v o 7.7 8.0 8.3 vdc line regulation (note 2) 10.6 vdc v in 25 vdc, i o = 500 ma 11 vdc v in 17 vdc 11 vdc v in 17 vdc, t j = 25 c 10.4 vdc v in 23 vdc, t j = 25 c reg line 6.0 1.7 1.7 5.0 80 80 40 80 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 1.4 1.0 .22 100 100 50 mv quiescent current t j = 25 c i b 3.3 6.0 6.0 ma quiescent current change 11 vdc v in 25 vdc, i o = 500 ma 10.6 vdc v in 20 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma ripple rejection 11.5 vdc v in 21.5 vdc, f = 120 hz, i o = 500 ma rr 62 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance f = 1.0 khz r o 0.9 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 0.4 mv/ c notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 7 motorola analog ic device data electrical characteristics (v in = 15 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7809ct characteristic symbol min typ max unit output voltage (t j = 25 c) v o 8.65 9.0 9.35 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 11.5 vdc v in 24 vdc v o 8.55 9.0 9.45 vdc line regulation, t j = 25 c (note 2) 11.5 vdc v in 26 vdc 11.5 vdc v in 17 vdc reg line 6.2 1.8 50 25 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.5 0.3 50 25 mv quiescent current (t j = 25 c) i b 3.4 8.0 ma quiescent current change 11.5 vdc v in 26 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 ma ripple rejection 11.5 vdc v in 21.5 vdc, f = 120 hz rr 61 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance f = 1.0 khz r o 1.0 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 0.5 mv/ c electrical characteristics (v in = 19 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7812b mc7812c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 11.5 12 12.5 11.5 12 12.5 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 14.5 vdc v in 27 vdc 15.5 vdc v in 27 vdc v o 11.4 12 12.6 11.4 12 12.6 vdc line regulation, t j = 25 c (note 2) 14.5 vdc v in 30 vdc 16 vdc v in 22 vdc reg line 7.5 2.2 240 120 7.5 2.2 240 120 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.6 1.0 240 120 1.6 1.0 240 120 mv quiescent current (t j = 25 c) i b 3.4 8.0 3.4 8.0 ma quiescent current change 14.5 vdc v in 30 vdc 15 vdc v in 30 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 1.0 0.5 ma ripple rejection 15 vdc v in 25 vdc, f = 120 hz rr 60 60 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 8 motorola analog ic device data electrical characteristics (continued) (v in = 19 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7812b mc7812c characteristic symbol min typ max min typ max unit output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 1.1 1.1 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 0.8 0.8 mv/ c electrical characteristics (v in = 19 v, i o = 10 a, t j = t low to t high [note 1], unless otherwise noted.) mc7812ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 11.75 12 12.25 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 14.8 vdc v in 27 vdc v o 11.5 12 12.5 vdc line regulation (note 2) 14.8 vdc v in 30 vdc, i o = 500 ma 16 vdc v in 22 vdc 16 vdc v in 22 vdc, t j = 25 c 14.5 vdc v in 27 vdc, t j = 25 c reg line 7.5 2.2 2.2 6.0 120 120 60 120 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 1.6 1.2 1.0 100 100 50 mv quiescent current t j = 25 c i b 3.4 6.0 6.0 ma quiescent current change 15 vdc v in 30 vdc, i o = 500 ma 14.8 vdc v in 27 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma ripple rejection 15 vdc v in 25 vdc, f = 120 hz, i o = 500 ma rr 60 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance (f = 1.0 khz) r o 1.1 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 0.8 mv/ c notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 9 motorola analog ic device data electrical characteristics (v in = 23 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7815b mc7815c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 14.4 15 15.6 14.4 15 15.6 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 17.5 vdc v in 30 vdc 18.5 vdc v in 30 vdc v o 14.25 15 15.75 14.25 15 15.75 vdc line regulation, t j = 25 c (note 2) 17.5 vdc v in 30 vdc 20 vdc v in 26 vdc reg line 8.5 3.0 300 150 8.5 3.0 300 150 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 1.8 1.2 300 150 1.8 1.2 300 150 mv quiescent current (t j = 25 c) i b 3.5 8.0 3.5 8.0 ma quiescent current change 17.5 vdc v in 30 vdc 18.5 vdc v in 30 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 1.0 0.5 ma ripple rejection 18.5 vdc v in 28.5 vdc, f = 120 hz rr 58 58 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 1.2 1.2 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 1.0 1.0 mv/ c electrical characteristics (v in = 23 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7815ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 14.7 15 15.3 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 17.9 vdc v in 30 vdc v o 14.4 15 15.6 vdc line regulation (note 2) 17.9 vdc v in 30 vdc, i o = 500 ma 20 vdc v in 26 vdc 20 vdc v in 26 vdc, t j = 25 c 17.5 vdc v in 30 vdc, t j = 25 c reg line 8.5 3.0 3.0 7.0 150 150 75 150 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 1.8 1.5 1.2 100 100 50 mv quiescent current t j = 25 c i b 3.5 6.0 6.0 ma quiescent current change 17.5 vdc v in 30 vdc, i o = 500 ma 17.5 vdc v in 30 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 10 motorola analog ic device data electrical characteristics (continued) ( v in = 23 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7815ac characteristic symbol min typ max unit ripple rejection 18.5 vdc v in 28.5 vdc, f = 120 hz, i o = 500 ma rr 58 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance f = 1.0 khz r o 1.2 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 1.0 mv/ c electrical characteristics (v in = 27 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7818b mc7818c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 17.3 18 18.7 17.3 18 18.7 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 21 vdc v in 33 vdc 22 vdc v in 33 vdc v o 17.1 18 18.9 17.1 18 18.9 vdc line regulation, t j = 25 c (note 2) 21 vdc v in 33 vdc 24 vdc v in 30 vdc reg line 9.5 3.2 360 180 9.5 3.2 360 180 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 2.0 1.5 360 180 2.0 1.5 360 180 mv quiescent current (t j = 25 c) i b 3.5 8.0 3.5 8.0 ma quiescent current change 21 vdc v in 33 vdc 22 vdc v in 33 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 1.0 0.5 ma ripple rejection 22 vdc v in 33 vdc, f = 120 hz rr 57 57 db dropout voltage (i o = 1.0 a, t j = 25 c) v ii v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 1.3 1.3 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 1.5 1.5 mv/ c notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 11 motorola analog ic device data electrical characteristics (v in = 27 v, i o = 10 a, t j = t low to t high [note 1], unless otherwise noted.) mc7818ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 17.64 18 18.36 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 21 vdc v in 33 vdc v o 17.3 18 18.7 vdc line regulation (note 2) 21 vdc v in 33 vdc, i o = 500 ma 24 vdc v in 30 vdc 24 vdc v in 30 vdc, t j = 25 c 20.6 vdc v in 33 vdc, t j = 25 c reg line 9.5 3.2 3.2 8.0 180 180 90 180 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 2.0 1.8 1.5 100 100 50 mv quiescent current t j = 25 c i b 3.5 6.0 6.0 ma quiescent current change 21 vdc v in 33 vdc, i o = 500 ma 21 vdc v in 33 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma ripple rejection 22 vdc v in 32 vdc, f = 120 hz, i o = 500 ma rr 57 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance f = 1.0 khz r o 1.3 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 1.5 mv/ c electrical characteristics (v in = 33 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7824b mc7824c characteristic symbol min typ max min typ max unit output voltage (t j = 25 c) v o 23 24 25 23 24 25 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 27 vdc v in 38 vdc 28 vdc v in 38 vdc v o 22.8 24 25.2 22.8 24 25.2 vdc line regulation, t j = 25 c (note 2) 27 vdc v in 38 vdc 30 vdc v in 36 vdc reg line 11.5 3.8 480 240 11.5 3.8 480 240 mv load regulation, t j = 25 c (note 2) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load 2.1 1.8 480 240 2.1 1.8 480 240 mv quiescent current (t j = 25 c) i b 3.6 8.0 3.6 8.0 ma notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 12 motorola analog ic device data electrical characteristics (continued) (v in = 33 v, i o = 500 ma, t j = t low to t high [note 1], unless otherwise noted.) mc7824b mc7824c characteristic symbol min typ max min typ max unit quiescent current change 27 vdc v in 38 vdc 28 vdc v in 38 vdc 5.0 ma i o 1.0 a d i b 1.0 0.5 1.0 0.5 ma ripple rejection 28 vdc v in 38 vdc, f = 120 hz rr 54 54 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 10 m v/v o output resistance f = 1.0 khz r o 1.4 1.4 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 0.2 a peak output current (t j = 25 c) i max 2.2 2.2 a average temperature coefficient of output voltage tcv o 2.0 2.0 mv/ c electrical characteristics (v in = 33 v, i o = 1.0 a, t j = t low to t high [note 1], unless otherwise noted.) mc7824ac characteristic symbol min typ max unit output voltage (t j = 25 c) v o 23.5 24 24.5 vdc output voltage (5.0 ma i o 1.0 a, p d 15 w) 27.3 vdc v in 38 vdc v o 23 24 25 vdc line regulation (note 2) 27 vdc v in 38 vdc, i o = 500 ma 30 vdc v in 36 vdc 30 vdc v in 36 vdc, t j = 25 c 26.7 vdc v in 38 vdc, t j = 25 c reg line 11.5 3.8 3.8 10 240 240 120 240 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = 25 c 5.0 ma i o 1.0 a 250 ma i o 750 ma reg load 2.1 2.0 1.8 100 100 50 mv quiescent current t j = 25 c i b 3.6 6.0 6.0 ma quiescent current change 27.3 vdc v in 38 vdc, i o = 500 ma 27.3 vdc v in 38 vdc, t j = 25 c 5.0 ma i o 1.0 a d i b 0.8 0.8 0.5 ma ripple rejection 28 vdc v in 38 vdc, f = 120 hz, i o = 500 ma rr 54 db dropout voltage (i o = 1.0 a, t j = 25 c) v i v o 2.0 vdc output noise voltage (t a = 25 c) 10 hz f 100 khz v n 10 m v/v o output resistance (f = 1.0 khz) r o 1.4 m w short circuit current limit (t a = 25 c) v in = 35 vdc i sc 0.2 a peak output current (t j = 25 c) i max 2.2 a average temperature coefficient of output voltage tcv o 2.0 mv/ c notes: 1. t low = 0 c for mc78xxac, c t high = +125 c for mc78xxac, c, b = 40 c for mc78xxb 2. load and line regulation are specified at constant junction temperature. changes in v o due to heating ef fects must be taken into account separately . pulse testing with low duty cycle is used.
MC7800 series 13 motorola analog ic device data figure 1. peak output current as a function of input/output differential voltage (mc78xxc, ac, b) figure 2. ripple rejection as a function of output voltages (mc78xxc, ac) figure 3. ripple rejection as a function of frequency (mc78xxc, ac) figure 4. output voltage as a function of junction temperature (mc7805c, ac, b) figure 5. output impedance as a function of output voltage (mc78xxc, ac) figure 6. quiescent current as a function of temperature (mc78xxc, ac, b) i o v in v out , input/ouput voltage differential (v) 3.0 2.0 1.5 1.0 0 4.0 8.0 12 20 30 40 , output current (a) 80 70 60 50 40 4.0 6.0 8.0 10 12 14 16 18 20 22 24 v o , output voltage (v) rr, ripple rejection (db) part # v in mc7805c = 10 v mc7806c = 11 v mc7808c = 14 v mc7812c = 19 v mc7815c = 23 v mc7818c = 27 v mc7824c = 33 v 80 50 rr, ripple rejection (db) 0.1 10 f, frequency (khz) 0.01 , output vol tage (v) o 5.0 4.9 60 20 20 60 100 140 180 t j , junction temperature ( c) v v in = 20 v i o = 5.0 ma f = 120 hz i o = 500 ma c l = 0 m f , output impedance (m ) o w 10 5.0 3.0 2.0 1.0 0.5 0.3 0.2 0.1 4.0 8.0 12 16 20 24 v o , output voltage (v) z , quiescent current (ma) b 6.0 4.0 3.0 2.0 1.0 0 75 50 t j , junction temperature ( c) 25 0 25 50 75 100 125 i 2.5 0.5 70 40 30 60 4.8 6.0 10 15 25 35 mc78xxb, c, ac t j = 85 c t j = 25 c 1.0 v in = 8.0 v to 18 v i o = 500 ma f = 120 hz t a = 25 c f = 120 hz i o = 20 ma d v in = 1.0 v(rms) t j = 40 c v in = 10 v v o = 5.0 v i l = 20 ma t j = 125 c t j = 0 c
MC7800 series 14 motorola analog ic device data applications information design considerations the MC7800 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 safearea compensation that reduces the output short circuit current as the voltage across the pass transistor is increased. in m an y l o w c urren t a pplications, c ompensation capacitors are not required. however , it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. an input bypass capacitor should be selected to provide good highfrequency characteristics to insure stable operation under all load conditions. a 0.33 m f 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 t h e r egulator s i npu t t erminals . n ormall y g ood construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. figure 7. current regulator figure 8. adjustable output regulator figure 9. current boost regulator figure 10. short circuit protection the MC7800 regulators can also be used as a current source when connected as above. in order to minimize dissipation the mc7805c is chosen in this application. resistor r determines the current as follows: for example, a 1.0 a current source would require r to be a 5.0 w , 10 w resistor and the output voltage compliance would be the input voltage less 7.0 v. i o = 5.0 v r + i b i b 3.2 ma over line and load changes. input 0.33 m f r i o mc7805 constant current to grounded load the addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. the minimum voltage obtainable with this arrangement is 2.0 v greater than the regulator voltage. input mc7805 output 0.33 m f 10 k mc1741g 7 6 4 1.0 k v o = 7.0 v to 20 v v in = v o 2.0 v 0.1 m f 3 2 the MC7800 series can be current boosted with a pnp transistor . the mj2955 provides current to 5.0 a. resistor r in conjunction with the v be of the pnp determines when the pass transistor begins conducting; this circuit is not short circuit proof. input/output dif ferential voltage minimum is increased by v be of the pass transistor. xx = 2 digits of type number indicating voltage. mc78xx input output r 1.0 m f mj2955 or equiv. 1.0 m f the circuit of figure 9 can be modified to provide supply protection against short circuits by adding a short circuit sense resistor , r sc , and an additional pnp transistor . the current sensing pnp must be able to handle the short circuit current of the threeterminal regulator . therefore, a fourampere plastic power transistor is specified. xx = 2 digits of type number indicating voltage. 1.0 m f mc78xx mj2955 or equiv. output r sc r 2n6049 or equiv. 10 m f r source 0.33 m f input r source 0.33 m f 10 m f
MC7800 series 15 motorola analog ic device data figure 11. worst case power dissipation versus ambient temperature (case 221a) figure 12. input output differential as a function of junction temperature (mc78xxc, ac, b) , power dissip ation (w) d 20 16 12 8.0 4.0 0 50 25 0 25 50 75 100 125 150 t a , ambient temperature ( c) p q hs = 0 c/w differential (v) in out , inputoutput vol tage 2.5 2.0 1.5 1.0 0.5 0 75 50 25 0 25 50 75 100 125 t j , junction temperature ( c) v v i o = 0 ma i o = 20 ma i o = 1.0 a i o = 500 ma i o = 200 ma d v o = 2% of v o extended curve for mc78xxb q jc = 5 c/w q ja = 65 c/w t j(max) = 150 c q hs = 5 c/w q hs = 15 c/w no heatsink figure 13. d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length r , thermal resist ance ja q junction-to-air ( c/w) 30 40 50 60 70 80 1.0 1.5 2.0 2.5 3.0 3.5 0 10 20 30 25 15 5.0 l, length of copper (mm) p d(max) for t a = 50 c minimum size pad 2.0 oz. copper l l ???? ???? ???? ???? ???? free air mounted vertically p d , maximum power dissip ation (w) r q ja definitions line r egulation t h e c hang e i n o utpu t v oltag e f o r a change in the input voltage. the measurement is made under conditions o f l o w d issipatio n o r b y u sin g p uls e t echniques s uch that the average chip temperature is not significantly affected. load regulation the change in output voltage for a change in load current at constant chip temperature. maximum power dissipation the maximum total device dissipation for which the regulator will operate within specifications. quiescent current that part of the input current that is not delivered to the load. output noise v oltage the rms ac voltage at the output, with constant load and no input ripple, measured over a specified frequency range. long t erm stability output voltage stability under accelerated life test conditions with the maximum rated voltage listed in the devices' electrical characteristics and maximum power dissipation. motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty , representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability , including without limitation consequential or incidental damages. at ypicalo parameters can and do vary in dif ferent applications. all operating parameters, including at ypicalso must be validated for each customer application by customer ' s technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur . should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly , any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and are registered trademarks of motorola, inc. motorola, inc. is an equal opportunity/af firmative action employer .
MC7800 series 16 motorola analog ic device data t suffix plastic package case 221a06 issue y outline dimensions min min max max inches millimeters dim a b c d f g h j k l n q r s t u v z 14.48 9.66 4.07 0.64 3.61 2.42 2.80 0.46 12.70 1.15 4.83 2.54 2.04 1.15 5.97 0.00 1.15 15.75 10.28 4.82 0.88 3.73 2.66 3.93 0.64 14.27 1.52 5.33 3.04 2.79 1.39 6.47 1.27 2.04 0.570 0.380 0.160 0.025 0.142 0.095 0.110 0.018 0.500 0.045 0.190 0.100 0.080 0.045 0.235 0.000 0.045 0.620 0.405 0.190 0.035 0.147 0.105 0.155 0.025 0.562 0.060 0.210 0.120 0.110 0.055 0.255 0.050 0.080 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dim z defines a zone where all body and lead irregularities are allowed. t seating plane c s t u j r f b q h z l v g n d k a 4 1 2 3 d2t suffix plastic package case 93603 (d 2 pak) issue b 5 ref 5 ref a 1 2 3 k f b j s h 0.010 (0.254) t m d g c e t m l p n r v u terminal 4 notes: 1 dimensioning and tolerancing per ansi y14.5m, 1982. 2 controlling dimension: inch. 3 tab contour optional within dimensions a and k. 4 dimensions u and v establish a minimum mounting surface for terminal 4. 5 dimensions a and b do not include mold flash or gate protrusions. mold flash and gate protrusions not to exceed 0.025 (0.635) maximum. dim a min max min max millimeters 0.386 0.403 9.804 10.236 inches b 0.356 0.368 9.042 9.347 c 0.170 0.180 4.318 4.572 d 0.026 0.036 0.660 0.914 e 0.045 0.055 1.143 1.397 f 0.051 ref 1.295 ref g 0.100 bsc 2.540 bsc h 0.539 0.579 13.691 14.707 j 0.125 max 3.175 max k 0.050 ref 1.270 ref l 0.000 0.010 0.000 0.254 m 0.088 0.102 2.235 2.591 n 0.018 0.026 0.457 0.660 p 0.058 0.078 1.473 1.981 r s 0.116 ref 2.946 ref u 0.200 min 5.080 min v 0.250 min 6.350 min literature distribution centers: usa/europe: motorola literature distribution; p .o. box 20912; phoenix, arizona 85036. jap an: nippon motorola ltd.; 4321, nishigotanda, shinagawaku, t okyo 141, japan. asia p acific: motorola semiconductors h.k. ltd.; silicon harbour center , no. 2 dai king street, t ai po industrial estate, t ai po, n.t., hong kong. MC7800/d ? codeline to be placed here

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