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? semiconductor components industries, llc, 2006 august, 2006 ? rev. 14 1 publication order number: mc7900/d mc7900 series 1.0 a negative voltage regulators the mc7900 series of fixed output negative voltage regulators are intended as complements to the popular mc7800 series devices. these negative regulators are available in the same seven?voltage options as the mc7800 devices. in addition, one extra voltage option commonly employed in mecl systems is also available in the negative mc7900 series. available in fixed output voltage options from ? 5.0 v to ? 24 v, these regulators employ current limiting, thermal shutdown, and safe?area compensation ? making them remarkably rugged under most operating conditions. with adequate heatsinking they can deliver output currents in excess of 1.0 a. ? no external components required ? internal thermal overload protection ? internal short circuit current limiting ? output transistor safe?area compensation ? available in 2% voltage tolerance (see ordering information) ? pb?free package may be available. the g?suffix denotes a pb?free lead finish figure 1. representative schematic diagram gnd v o v i 2.4 k 25 3.6 k 1.2 k 1.1 k 2.0 k 12 k 1.0 k 4.0 k 2.0 k 14.7 k 2.0 k 8.0 k 1.0 k 1.6 k 4.0 k 0.3 10 k 10 k 20 k 20 k 20 pf 10 pf 240 750 r 1 r 2 this device contains 26 active transistors. http://onsemi.com to?220 t suffix case 221ab heatsink surface connected to pin 2. pin 1. ground 2. input 3. output d 2 pak d2t suffix case 936 heatsink surface (shown as terminal 4 in case outline drawing) is connected to pin 2. 1 2 3 1 2 3 standard application a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0 v above more negative even during the high point of the input ripple voltage. 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 improve stability and transient response. mc79xx input c in * 0.33 f c o ** 1.0 f output xx, * * ** see detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ordering information see general marking information in the device marking section on page 14 of this data sheet. device marking information
mc7900 series http://onsemi.com 2 maximum ratings (t a = +25 c, unless otherwise noted.) rating symbol value unit input voltage (?5.0 v v o ?18 v) input voltage (24 v) v i ?35 ?40 vdc power dissipation case 221a t a = +25 c p d internally limited w thermal resistance, junction?to?ambient ja 65 c/w thermal resistance, junction?to?case jc 5.0 c/w case 936 (d 2 pak) t a = +25 c p d internally limited w thermal resistance, junction?to?ambient ja 70 c/w thermal resistance, junction?to?case jc 5.0 c/w storage junction temperature range t stg ?65 to +150 c junction temperature t j +150 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. *this device series contains esd protection and exceeds the following tests: human body model 2000 v per mil_std_883, method 3015 machine model method 200 v MC7905b, MC7905c electrical characteristics (v i = ?10 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?4.8 ?5.0 ?5.2 vdc line regulation (note 1) (t j = +25 c, i o = 100 ma) ?7.0 vdc v i ? 25 vdc ?8.0 vdc v i ?12 vdc (t j = +25 c, i o = 500 ma) ?7.0 vdc v i ? 25 vdc ?8.0 vdc v i ?12 vdc reg line ? ? ? ? 7.0 2.0 35 8.0 50 25 100 50 mv load regulation, t j = +25 c (note 1) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 11 4.0 100 50 mv output voltage ?7.0 vdc v i ? 20 vdc, 5.0 ma i o 1.0 a, p 15 w v o ? 4.75 ? ? 5.25 vdc input bias current (t j = +25 c) i ib ? 4.3 8.0 ma input bias current change ?7.0 vdc v i ? 25 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 40 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 70 ? db dropout voltage i o = 1.0 a, t j = +25 c v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c 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 cycle is used. *tlow = ?40 c for MC7905b and tlow = 0 c for MC7905c.
mc7900 series http://onsemi.com 3 MC7905ac electrical characteristics (v i = ?10 v, i o = 500 ma, 0 c < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?4.9 ?5.0 ?5.1 vdc line regulation (note 2) ?8.0 vdc v i ?12 vdc; i o = 1.0 a, t j = +25 c ?8.0 vdc v i ?12 vdc; i o = 1.0 a ?7.5 vdc v i ? 25 vdc; i o = 500 ma ?7.0 vdc v i ? 20 vdc; i o = 1.0 a, t j = +25 c reg line ? ? ? ? 2.0 7.0 7.0 6.0 25 50 50 50 mv load regulation (note 2) 5.0 ma i o 1.5 a, t j = +25 c 250 ma i o 750 ma 5.0 ma i o 1.0 a reg load ? ? ? 11 4.0 9.0 100 50 100 mv output voltage ?7.5 vdc v i ? 20 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?4.80 ? ?5.20 vdc input bias current i ib ? 4.4 8.0 ma input bias current change ?7.5 vdc v i ? 25 vdc 5.0 ma i o 1.0 a 5.0 ma i o 1.5 a, t j = +25 c i ib ? ? ? ? ? ? 1.3 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 40 ? v ripple rejection (i o = ma, f = 120 hz) rr ? 70 ? db dropout voltage (i o = 1.0 a. t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c v o / t ? ?1.0 ? mv/ c MC7905.2c electrical characteristics (v i = ?10 v, i o = 500 ma, 0 c < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?5.0 ?5.2 ?5.4 vdc line regulation (note 2) (t j = +25 c, i o = 100 ma) ?7.2 vdc v i ? 25 vdc ?8.0 vdc v i ?12 vdc (t j = +25 c, i o = 500 ma) ?7.2 vdc v i ? 25 vdc ?8.0 vdc v i ?12 vdc reg line ? ? ? ? 8.0 2.2 37 8.5 52 27 105 52 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 ? ? 12 4.5 105 52 mv output voltage ?7.2 vdc v i ? 20 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?4.95 ? ?5.45 vdc input bias current (t j = +25 c) i ib ? 4.3 8.0 ma input bias current change ?7.2 vdc v i ? 25 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 42 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 68 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c v o / t ? ?1.0 ? mv/ c 2. 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 cycle is used.
mc7900 series http://onsemi.com 4 mc7906c electrical characteristics (v i = ?11 v, i o = 500 ma, 0 c < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?5.75 ?6.0 ?6.25 vdc line regulation (note 3) (t j = +25 c, i o = 100 ma) ?8.0 vdc v i ? 25 vdc ?9.0 vdc v i ?13 vdc (t j = +25 c, i o = 500 ma) ?8.0 vdc v i ? 25 vdc ?9.0 vdc v i ?13 vdc reg line ? ? ? ? 9.0 3.0 43 10 60 30 120 60 mv load regulation, t j = +25 c (note 3) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 13 5.0 120 60 mv output voltage ?8.0 vdc v i ? 21 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?5.7 ? ?6.3 vdc input bias current (t j = +25 c) i ib ? 4.3 8.0 ma input bias current change ?8.0 vdc v i ? 25 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 45 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 65 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c v o / t ? ?1.0 ? mv/ c mc7908c electrical characteristics (v i = ?14 v, i o = 500 ma, 0 c < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?7.7 ?8.0 ?8.3 vdc line regulation (note 3) (t j = +25 c, i o = 100 ma) ?10.5 vdc v i ?25 vdc ?11 vdc v i ?17 vdc (t j = +25 c, i o = 500 ma) ?10.5 vdc v i ?25 vdc ?11 vdc v i ?17 vdc reg line ? ? ? ? 12 5.0 50 22 80 40 160 80 mv load regulation, t j = +25 c (note 3) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 26 9.0 160 80 mv output voltage ?10.5 vdc v i ? 23 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?7.6 ? ?8.4 vdc input bias current (t j = +25 c) i ib ? 4.3 8.0 ma input bias current change ?10.5 vdc v i ? 25 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 52 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 62 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c v o / t ? ?1.0 ? mv/ c 3. 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 cycle is used.
mc7900 series http://onsemi.com 5 mc7912b, mc7912c electrical characteristics (v i = ?19 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?11.5 ?12 ?12.5 vdc line regulation (note 4) (t j = +25 c, i o = 100 ma) ?14.5 vdc v i ? 30 vdc ?16 vdc v i ? 22 vdc (t j = +25 c, i o = 500 ma) ?14.5 vdc v i ? 30 vdc ?16 vdc v i ? 22 vdc reg line ? ? ? ? 13 6.0 55 24 120 60 240 120 mv load regulation, t j = +25 c (note 4) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 46 17 240 120 mv output voltage ?14.5 vdc v i ? 27 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?11.4 ? ?12.6 vdc input bias current (t j = +25 c) i ib ? 4.4 8.0 ma input bias current change ?14.5 vdc v i ? 30 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 75 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 61 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c mc7912ac electrical characteristics (v i = ?19 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?11.75 ?12 ?12.25 vdc line regulation (note 4) ?16 vdc v i ? 22 vdc; i o = 1.0 a, t j = +25 c ?16 vdc v i ? 22 vdc; i o = 1.0 a ?14.8 vdc v i ? 30 vdc; i o = 500 ma ?14.5 vdc v i ? 27 vdc; i o = 1.0 a, t j = +25 c reg line ? ? ? ? 6.0 24 24 13 60 120 120 120 mv load regulation (note 4) 5.0 ma i o 1.5 a, t j = +25 c 250 ma i o 750 ma 5.0 ma i o 1.0 a reg load ? ? ? 46 17 35 150 75 150 mv output voltage ?14.8 vdc v i ? 27 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?11.5 ? ?12.5 vdc input bias current i ib ? 4.4 8.0 ma input bias current change ?15 vdc v i ? 30 vdc 5.0 ma i o 1.0 a 5.0 ma i o 1.5 a, t j = +25 c i ib ? ? ? ? ? ? 0.8 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 75 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 61 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 a, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c 4. 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 cycle is used. *tlow = ?40 c for mc7912b and tlow = 0 c for mc7912c.
mc7900 series http://onsemi.com 6 mc7915b, mc7915c electrical characteristics (v i = ? 23 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?14.4 ?15 ?15.6 vdc line regulation (note 5) (t j = +25 c, i o = 100 ma) ?17.5 vdc v i ? 30 vdc ?20 vdc v i ? 26 vdc (t j = +25 c, i o = 500 ma) ?17.5 vdc v i ? 30 vdc ?20 vdc v i ? 26 vdc reg line ? ? ? ? 14 6.0 57 27 150 75 300 150 mv load regulation, t j = +25 c (note 5) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 68 25 300 150 mv output voltage ?17.5 vdc v i ? 30 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?14.25 ? ?15.75 vdc input bias current (t j = +25 c) i ib ? 4.4 8.0 ma input bias current change ?17.5 vdc v i ? 30 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 90 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 60 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 a, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c mc7915ac electrical characteristics (v i = ? 23 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?14.7 ?15 ?15.3 vdc line regulation (note 5) ?20 vdc v i ? 26 vdc, i o = 1.0 a, t j = +25 c ?20 vdc v i ? 26 vdc, i o = 1.0 a, ?17.9 vdc v i ? 30 vdc, i o = 500 ma ?17.5 vdc v i ? 30 vdc, i o = 1.0 a, t j = +25 c reg line ? ? ? ? 27 57 57 57 75 150 150 150 mv load regulation (note 5) 5.0 ma i o 1.5 a, t j = +25 c 250 ma i o 750 ma 5.0 ma i o 1.0 a reg load ? ? ? 68 25 40 150 75 150 mv output voltage ?17.9 vdc v i ? 30 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?14.4 ? ?15.6 vdc input bias current i ib ? 4.4 8.0 ma input bias current change ?17.5 vdc v i ? 30 vdc 5.0 ma i o 1.0 a 5.0 ma i o 1.5 a, t j = +25 c i ib ? ? ? ? ? ? 0.8 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 90 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 60 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c 5. 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 cycle is used. *tlow = ?40 c for mc7915b and tlow = 0 c for mc7915c.
mc7900 series http://onsemi.com 7 mc7918c electrical characteristics (v i = ? 27 v, i o = 500 ma, 0 c < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?17.3 ?18 ?18.7 vdc line regulation (note 6) (t j = +25 c, i o = 100 ma) ?21 vdc v i ? 33 vdc ?24 vdc v i ? 30 vdc (t j = +25 c, i o = 500 ma) ?21 vdc v i ? 33 vdc ?24 vdc v i ? 30 vdc reg line ? ? ? ? 25 10 90 50 180 90 360 180 mv load regulation, t j = +25 c (note 6) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 110 55 360 180 mv output voltage ?21 vdc v i ? 33 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?17.1 ? ?18.9 vdc input bias current (t j = +25 c) i ib ? 4.5 8.0 ma input bias current change ?21 vdc v i ? 33 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 110 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 59 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c v o / t ? ?1.0 ? mv/ c mc7924b, mc7924c electrical characteristics (v i = ? 33 v, i o = 500 ma, tlow* < t j < +125 c, unless otherwise noted.) characteristics symbol min typ max unit output voltage (t j = +25 c) v o ?23 ?24 ?25 vdc line regulation (note 6) (t j = +25 c, i o = 100 ma) ?27 vdc v i ? 38 vdc ?30 vdc v i ? 36 vdc (t j = +25 c, i o = 500 ma) ?27 vdc v i ? 38 vdc ?30 vdc v i ? 36 vdc reg line ? ? ? ? 31 14 118 70 240 120 470 240 mv load regulation, t j = +25 c (note 6) 5.0 ma i o 1.5 a 250 ma i o 750 ma reg load ? ? 150 85 480 240 mv output voltage ?27 vdc v i ? 38 vdc, 5.0 ma i o 1.0 a, p 15 w v o ?22.8 ? ?25.2 vdc input bias current (t j = +25 c) i ib ? 4.6 8.0 ma input bias current change ?27 vdc v i ? 38 vdc 5.0 ma i o 1.5 a i ib ? ? ? ? 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n ? 170 ? v ripple rejection (i o = 20 ma, f = 120 hz) rr ? 56 ? db dropout voltage (i o = 1.0 a, t j = +25 c) v i ?v o ? 1.3 ? vdc average temperature coefficient of output voltage i o = 5.0 ma, tlow* t j +125 c v o / t ? ?1.0 ? mv/ c 6. 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 cycle is used. *tlow = ?40 c for mc7924b and tlow = 0 c for mc7924c.
mc7900 series http://onsemi.com 8 figure 2. worst case power dissipation as a function of ambient temperature figure 3. peak output current as a function of input?output differential voltage figure 4. ripple rejection as a function of frequency figure 5. ripple rejection as a function of output voltage figure 6. output voltage as a function of junction temperature figure 7. quiescent current as a function of temperature , power dissipation (w) d p infinite heatsink hs = 5 c/w hs = 15 c/w no heatsink jc = 5 c/w ja = 65 c/w p d (max) = 15w , output current (a) o i rr, ripple rejection (db) v in = ?11 v v o = ?6.0 v i o = 20 ma rr, ripple rejection (db) f = 120 hz i o = 20 ma v in = 1.0 v(rms) , output voltage (?v) o v v in = ?11 v v d = ?6.0 v i o = 20 ma , input bias current (ma) ib i v in = ?11 v v o = ?6.0 v i o = 20 ma t j = +25 c 20 10 5.0 4.0 3.0 2.0 1.0 0.5 0.4 0.3 0.2 0.1 2.5 2.0 1.5 1.0 0.5 0 100 80 60 40 20 80 70 60 50 40 6.26 6.22 6.18 6.14 6.10 6.06 5.2 5.0 4.8 4.6 4.4 4.2 25 50 75 100 125 150 t a , ambient temperature ( c) 0 3.0 6.0 9.0 12 15 18 21 24 27 30 |v i ?v o | input?output voltage differential (v) 10 100 1.0 k 10 k 100 k f, frequency (hz) 2.0 4.0 6.0 8.0 10 12 14 16 18 20 22 v o , output voltage (v) ?25 0 25 50 75 100 125 150 175 t j , junction temperature ( c) 0 25 50 75 100 125 t j , junction temperature ( c) 0
mc7900 series http://onsemi.com 9 applications information design considerations the mc7900 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 safe?area compensation that reduces the output short circuit current as the voltage across the pass transistor is increased. in many low current applications, compensation 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 high?frequency characteristics to insure stable operation under all load conditions. a 0.33 f or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. the capacitor chosen should have an equivalent series resistance of less than 0.7 . the bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. bypassing the output is also recommended. figure 8. current regulator the MC7905, ?5.0 v regulator can be used as a constant current source when connected as above. the output current is the sum of resistor r current and quiescent bias current as follows. the quiescent current for this regulator is typically 4.3 ma. the 5.0v regulator was chosen to minimize dissipation and to allow the output voltage to operate to within 6.0 v below the input voltage. i o = 5.0 v + i b ?20 v input MC7905 10 r i o = 200 ma ? v o 10 v 1.0 f gnd gnd + 1.0 f + r figure 9. current boost regulator (?5.0 v @ 4.0 a, with 5.0 a current limiting) when a boost transistor is used, short circuit currents are equal to the sum of the series pass and regulator limits, which are measured at 3.2 a and 1.8 a respectively in this case. series pass limiting is approximately equal to 0.6 v/r sc . operation beyond this point to the peak current capability of the MC7905c is possible if the regulator is mounted on a heatsink; otherwise thermal shutdown will occur when the additional load current is picked up by the regulator. *mounted on heatsink. ?10 v input 0.56 0.56 0.56 mje200* or equiv 5.6 2n3055* or equiv MC7905* 1.0 f ?5.0 v output gnd gnd + + 1.0 f 10 f + figure 10. operational amplifier supply ( 15 @ 1.0 a) the mc7815 and mc7915 positive and negative regulators may be connected as shown to obtain a dual power supply for operational amplifiers. a clamp diode should be used at the output of the mc7815 to prevent potential latch?up problems whenever the output of the positive regulator (mc7815) is drawn below ground with an output current greater than 200 ma. +20 v input +15 v output 0.33 f 1n4001 or equiv gnd gnd 1.0 f + ?20 v input ?15 v output mc7815 mc7915 + + + 1.0 f 1.0 f 1.0 f
mc7900 series http://onsemi.com 10 figure 11. d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length r , thermal resistance ja junction-to-air ( c/w) p d(max) for t a = +50 c ??? ??? ??? ??? ja 1.0 1.5 2.0 2.5 3.0 3.5 definitions line regulation ? the change in output voltage for a change in the input voltage. the measurement is made under conditions of low dissipation or by using pulse techniques such 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. input bias current ? that part of the input current that is not delivered to the load. output noise voltage ? the rms ac voltage at the output, with constant load and no input ripple, measured over a specified frequency range. long term stability ? output voltage stability under accelerated life test conditions with the maximum rated voltage listed in the devices? electrical characteristics and maximum power dissipation.
mc7900 series http://onsemi.com 11 ordering information device nominal output voltage output voltage tolerance package operating temperature range shipping ? MC7905acd2t ?5.0 v 2% d 2 pak t j = 0 c to +125 c 50 units/rail MC7905acd2tg d 2 pak (pb?free) 50 units/rail MC7905acd2tr4 d 2 pak 800 tape & reel MC7905acd2tr4g d 2 pak (pb?free) 800 tape & reel MC7905act to?220 50 units/rail MC7905actg to?220 (pb?free) 50 units/rail MC7905bd2t 4% d 2 pak t j = ?40 c to +125 c 50 units/rail MC7905bd2tg d 2 pak (pb?free) 50 units/rail MC7905bd2tr4 d 2 pak 800 tape & reel MC7905bd2tr4g d 2 pak (pb?free) 800 tape & reel MC7905bt to?220 50 units/rail MC7905btg to?220 (pb?free) 50 units/rail MC7905cd2t d 2 pak t j = 0 c to +125 c 50 units/rail MC7905cd2tg d 2 pak (pb?free) 50 units/rail MC7905cd2tr4 d 2 pak 800 tape & reel MC7905cd2tr4g d 2 pak (pb?free) 800 tape & reel MC7905ct to?220 50 units/rail MC7905ctg to?220 (pb?free) 50 units/rail MC7905.2ct ?5.2 v 4% to?220 t j = 0 c to +125 c 50 units/rail MC7905.2ctg to?220 (pb?free) 50 units/rail mc7906cd2t ?6.0 v 4% d 2 pak t j = 0 c to +125 c 50 units/rail mc7906cd2tg d 2 pak (pb?free) 50 units/rail mc7906ct to?220 50 units/rail mc7906ctg to?220 (pb?free) 50 units/rail mc7908act ?8.0 v 2% to?220 t j = 0 c to +125 c 50 units/rail mc7908actg to?220 (pb?free) 50 units/rail mc7908cd2t 4% d 2 pak 50 units/rail mc7908cd2tg d 2 pak (pb?free) 50 units/rail mc7908cd2tr4 d 2 pak 800 tape & reel mc7908cd2tr4g d 2 pak (pb?free) 800 tape & reel mc7908ct to?220 50 units/rail mc7908ctg to?220 (pb?free) 50 units/rail
mc7900 series http://onsemi.com 12 device shipping ? operating temperature range package output voltage tolerance nominal output voltage mc7912acd2t ?12 v 2% d 2 pak t j = 0 c to +125 c 50 units/rail mc7912acd2tg d 2 pak (pb?free) 50 units/rail mc7912acd2tr4 d 2 pak 800 tape & reel mc7912acd2tr4g d 2 pak (pb?free) 800 tape & reel mc7912act to?220 50 units/rail mc7912actg to?220 (pb?free) 50 units/rail mc7912bd2t 4% d 2 pak t j = ?40 c to +125 c 50 units/rail mc7912bd2tg d 2 pak (pb?free) 50 units/rail mc7912bd2tr4 d 2 pak 800 tape & reel mc7912bd2tr4g d 2 pak (pb?free) 800 tape & reel mc7912bt to?220 50 units/rail mc7912btg to?220 (pb?free) 50 units/rail mc7912cd2t d 2 pak t j = 0 c to +125 c 50 units/rail mc7912cd2tg d 2 pak (pb?free) 50 units/rail mc7912cd2tr4 d 2 pak 800 tape & reel mc7912cd2tr4g d 2 pak (pb?free) 800 tape & reel mc7912ct to?220 50 units/rail mc7912ctg to?220 (pb?free) 50 units/rail mc7915acd2t ? 15 v 2% d 2 pak t j = 0 c to +125 c 50 units/rail mc7915acd2tg d 2 pak (pb?free) 50 units/rail mc7915act to?220 50 units/rail mc7915actg to?220 (pb?free) 50 units/rail mc7915bd2t 4% d 2 pak t j = ?40 c to +125 c 50 units/rail mc7915bd2tg d 2 pak (pb?free) 50 units/rail mc7915bt to?220 50 units/rail mc7915btg to?220 (pb?free) 50 units/rail mc7915cd2t d 2 pak t j = 0 c to +125 c 50 units/rail mc7915cd2tg d 2 pak (pb?free) 50 units/rail mc7915cd2tr4 d 2 pak 800 tape & reel mc7915cd2tr4g d 2 pak (pb?free) 800 tape & reel mc7915ct to?220 50 units/rail mc7915ctg to?220 (pb?free) 50 units/rail
mc7900 series http://onsemi.com 13 device shipping ? operating temperature range package output voltage tolerance nominal output voltage mc7918ct ? 18 v 4% to?220 t j = 0 c to +125 c 50 units/rail mc7918ctg to?220 (pb?free) 50 units/rail mc7924bt ? 24 v 4% to?220 t j = ?40 c to +125 c 50 units/rail mc7924btg to?220 (pb?free) 50 units/rail mc7924cd2t d 2 pak t j = 0 c to +125 c 50 units/rail mc7924cd2tg d 2 pak (pb?free) 50 units/rail mc7924ct to?220 50 units/rail mc7924ctg to?220 (pb?free) 50 units/rail ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d.
mc7900 series http://onsemi.com 14 to?220 t suffix case 221ab marking diagrams xx = nominal voltage a = assembly location wl = wafer lot y = year ww = work week g = pb?free device 1 mc 79xxact awlywwg 23 1 mc 7905.2ct awlywwg 23 1 mc 79xxbt awlywwg 23 1 mc 79xxct awlywwg 23 d 2 pak d2t suffix case 936 mc 79xxacd2t awlywwg 1 2 3 mc 79xxbd2t awlywwg 1 2 3 mc 79xxcd2t awlywwg 1 2 3
mc7900 series http://onsemi.com 15 package dimensions d 2 pak d2t suffix plastic package case 936?03 issue b d 2 pak?3 *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* 8.38 0.33 1.016 0.04 17.02 0.67 10.66 0.42 3.05 0.12 5.08 0.20 mm inches scale 3:1 5 ref 5 ref 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 a 12 3 k f b j s h d g c m 0.010 (0.254) t e m l p n r ?t? optional chamfer
mc7900 series http://onsemi.com 16 package dimensions to?220, single gauge t suffix case 221ab?01 issue o notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension z defines a zone where all body and lead irregularities are allowed. dim min max min max millimeters inches a 0.570 0.620 14.48 15.75 b 0.380 0.405 9.66 10.28 c 0.160 0.190 4.07 4.82 d 0.025 0.035 0.64 0.88 f 0.142 0.147 3.61 3.73 g 0.095 0.105 2.42 2.66 h 0.110 0.155 2.80 3.93 j 0.018 0.025 0.46 0.64 k 0.500 0.562 12.70 14.27 l 0.045 0.060 1.15 1.52 n 0.190 0.210 4.83 5.33 q 0.100 0.120 2.54 3.04 r 0.080 0.110 2.04 2.79 s 0.020 0.055 0.508 1.39 t 0.235 0.255 5.97 6.47 u 0.000 0.050 0.00 1.27 v 0.045 ??? 1.15 ??? z ??? 0.080 ??? 2.04 b q h z l v g n a k f 123 4 d seating plane ?t? c s t u r j on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, r epresentation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc 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 scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc 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, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. mc7900/d publication ordering information n. american technical support : 800?282?9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81?3?5773?3850 literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303?675?2175 or 800?344?3860 toll free usa/canada fax : 303?675?2176 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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