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three-terminal 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 sevenvoltage 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 safearea 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 safearea compensation ? available in 2% voltage tolerance (see ordering information) 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. ordering information device output voltage tolerance operating temperature range package mc79xxacd2t 2% surface mount mc79xxcd2t 4% t j =0 to +125 5 c surface mount mc79xxact 2% t j = 0 to +125 c insertion mount mc79xxct 4% insertion mount mc79xxbd2t 4% t =40 to +125 c surface mount mc79xxbt 4% t j = 40 to +125 c insertion mount xx indicates nominal voltage. on semiconductor ? semiconductor components industries, llc, 2001 march, 2001 rev. 7 1 publication order number: mc7900/d mc7900 series device type/nominal output voltage mc7905 mc7905.2 mc7906 mc7908 5.0 v 5.2 v 6.0 v 8.0 v mc7912 mc7915 mc7918 mc7924 12 v 15 v 28 v 24 v threeterminal negative fixed voltage regulators pin 1. ground 2. input 3. output 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 m f c o ** 1.0 m f output t suffix plastic package case 221a heatsink surface connected to pin 2. d2t suffix plastic package case 936 (d 2 pak) 3 1 2 3 1 2 heatsink surface (shown as terminal 4 in case outline drawing) is connected to pin 2. xx, * * **
mc7900 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, junctiontoambient q ja 65 c/w thermal resistance, junctiontocase q jc 5.0 c/w case 936 (d 2 pak) t a = +25 c p d internally limited w thermal resistance, junctiontoambient q ja 70 c/w thermal resistance, junctiontocase q jc 5.0 c/w storage junction temperature range t stg 65 to +150 c junction temperature t j +150 c thermal characteristics characteristics symbol max unit thermal resistance, junctiontoambient r q ja 65 c/w thermal resistance, junctiontocase r q jc 5.0 c/w mc7905c 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 4.8 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 d i ib 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 40 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 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 1) 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 1) 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 d i ib 1.3 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 40 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c d v o / d 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 1) (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 1) 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 d i ib 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 42 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 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 1) (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 1) 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 d i ib 1.3 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 45 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c d v o / d 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 1) (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 1) 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 d i ib 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 52 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 http://onsemi.com 5 mc7912c electrical characteristics (v i = 19 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 11.5 12 12.5 vdc line regulation (note 1) (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 1) 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 d i ib 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 75 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c mc7912ac electrical characteristics (v i = 19 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 11.75 12 12.25 vdc line regulation (note 1) 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 1) 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 d i ib 0.8 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 75 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 http://onsemi.com 6 mc7915c electrical characteristics (v i = 23 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 14.4 15 15.6 vdc line regulation (note 1) (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 1) 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 d i ib 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 90 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 a, 0 c t j +125 c d v o / d t 1.0 mv/ c mc7915ac electrical characteristics (v i = 23 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 14.7 15 15.3 vdc line regulation (note 1) 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 1) 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 d i ib 0.8 0.5 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 90 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 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 1) (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 1) 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 d i ib 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 110 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c mc7924c electrical characteristics (v i = 33 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 23 24 25 vdc line regulation (note 1) (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 1) 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 d i ib 1.0 0.5 ma output noise voltage (t a = +25 c, 10 hz f 100 khz) v n 170 m 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 2.0 vdc average temperature coefficient of output voltage i o = 5.0 ma, 0 c t j +125 c d v o / d t 1.0 mv/ c note: 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.
mc7900 http://onsemi.com 8 figure 1. worst case power dissipation as a function of ambient temperature figure 2. peak output current as a function of inputoutput differential voltage figure 3. ripple rejection as a function of frequency figure 4. ripple rejection as a function of output voltage figure 5. output voltage as a function of junction temperature figure 6. quiescent current as a function of temperature , power dissipation (w) d p infinite heatsink q hs = 5 c/w q hs = 15 c/w no heatsink q jc = 5 c/w q 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 d 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 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 safearea 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 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 capacitor chosen should have an equivalent series resistance of less than 0.7 w . 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 7. current regulator the mc7905, -5.0 v regulator can be used as a constant current source whe n connected as above. the output current is the sum of resistor r current an d quiescent bias current as follows. the quiescent current for this regulator is typically 4.3 ma. the 5.0v regulator wa s chosen to minimize dissipation and to allow the output voltage to operate to withi n 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 m f gnd gnd + 1.0 m f + r figure 8. 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 m f -5.0 v output gnd gnd + + 1.0 m f 10 m f + figure 9. 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 m f 1n4001 or equiv gnd gnd 1.0 m f + -20 v input -15 v output mc7815 mc7915 + + + 1.0 m f 1.0 m f 1.0 m f
mc7900 http://onsemi.com 10 figure 10. d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length r , thermal resistance ja q junctiontoair ( c/w) p d(max) for t a = +50 c ??? ??? ??? ??? p d , maximum power dissipation (w) 30 40 50 60 70 80 0102030 25 15 5.0 l, length of copper (mm) minimum size pad 2.0 oz. copper l l free air mounted vertically r q 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 http://onsemi.com 11 package dimensions t suffix plastic package case 221a09 issue aa 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 0.045 0.055 1.15 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 d2t suffix plastic package case 93603 (d 2 pak) issue b 5 ref 5 ref a 12 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 optional chamfer
mc7900 http://onsemi.com 12 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any 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 without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso 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 officers, employees, subsidiaries, affiliates, 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 unauthori zed 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. publication ordering information central/south america: spanish phone : 3033087143 (monfri 8:00am to 5:00pm mst) email : onlitspanish@hibbertco.com tollfree from mexico: dial 018002882872 for access then dial 8662979322 asia/pacific : ldc for on semiconductor asia support phone : 13036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong & singapore: 00180044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. mc7900/d north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com fax response line: 3036752167 or 8003443810 toll free usa/canada n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone : (+1) 3033087140 (monfri 2:30pm to 7:00pm cet) email : onlitgerman@hibbertco.com french phone : (+1) 3033087141 (monfri 2:00pm to 7:00pm cet) email : onlitfrench@hibbertco.com english phone : (+1) 3033087142 (monfri 12:00pm to 5:00pm gmt) email : onlit@hibbertco.com european tollfree access*: 0080044223781 *available from germany, france, italy, uk, ireland

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