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l78s00 series january 1993 2a positive voltage regulators . output current to 2a . output voltages of 5 ; 7.5 ; 9 ; 10 ; 12 ; 15 ; 18 ; 24v . thermal overload protection . short circuit protection . output transistor soa protection description the l78s00 series of three-terminal positive regu- lators is available in to-220 and to-3 packages and with several fixed output voltages, making it useful in a wide range of applications. these regu- lators can provide local on-card regulation, eliminat- ing the distribution problems associated with single point regulation. each type employs internal current limiting, thermal shut-down and safe area protec- tion, making it essentially indestructible. if adequate heat sinking is provided, they can deliver over 2a output current. although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. to-220 block diagram to-3 1/21
absolute maximum ratings symbol parameter value unit v i dc input voltage (for v o = 5 to 18v) (for v o =24v) 35 40 v v i o output current internally limited p tot power dissipation internally limited t stg storage temperature 65 to + 150 c t op operating junction temperature (for l78s00 ) (for l78s00c ) 55to+150 0to+150 c c thermal data to-220 to-3 r th j-case r th j-amb thermal resistance junction-case thermal resistance junction-ambient max max 3 50 4 35 c/w c/w connection diagrams and ordering numbers (top views) type to-220 to-3 output voltage l78s05 l78s05c l78s75 l78s75c l78s09 l78s09c l78s10 l78s10c l78s12 l78s12c l78s15 l78s15c l78s18 l78s18c l78s24 l78s24c l78s05cv l78s75cv l78s09cv l78s10cv l78s12cv l78s15cv l78s18cv l78s24cv l78s05t l78s05ct L78S75T l78s75ct l78s09t l78s09ct l78s10t l78s10ct l78s12t l78s12ct l78s15t l78s15ct l78s18t l78s18ct l78s24t l78s24ct 5v 5v 7.5v 7.5v 9v 9v 10v 10v 12v 12v 15v 15v 18v 18v 24v 24v l78s00 series 2/21
application circuit schematic diagram l78s00 series 3/21
test circuits figure 1 : dc parameters. figure 2 : load regulation. figure 3 : ripple rejection. l78s00 series 4/21
electrical characteristics for l78s05 (refer to the test circuits, t j =25 o c, v i = 10v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 4.8 5 5.2 v v o output voltage i o =1a v i = 7 v 4.75 5 5.25 v d v o line regulation v i = 7 to 25 v v i = 8 to 25 v 100 50 mv mv d v o load regulation i o = 20 ma to 2 a 100 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 7 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1.1 mv/ o c e n output noise voltage b = 10hz to 100khz 40 m v svr supply voltage rejection f = 120 hz 60 db v i operating input voltage i o 1.5 a 8 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s75 (refer to the test circuits, t j =25 o c, v i = 12.5v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 7.15 7.5 7.9 v v o output voltage i o =1a v i = 9.5 v 7.1 7.5 7.95 v d v o line regulation v i = 9.5 to 25 v v i = 10.5 to 20 v 120 60 mv mv d v o load regulation i o = 20 ma to 2 a 120 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 9.5 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -0.8 mv/ o c e n output noise voltage b = 10hz to 100khz 52 m v svr supply voltage rejection f = 120 hz 54 db v i operating input voltage i o 1.5 a 10.5 v r o output resistance f = 1khz 16 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 5/21
electrical characteristics for l78s09 (refer to the test circuits, t j =25 o c, v i = 14v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 8.65 9 9.35 v v o output voltage i o =1a v i = 11 v 8.6 9 9.4 v d v o line regulation v i =11to25v v i =11to20v 130 65 mv mv d v o load regulation i o = 20 ma to 2 a 130 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 11 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 60 m v svr supply voltage rejection f = 120 hz 53 db v i operating input voltage i o 1.5 a 12 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s10 (refer to the test circuits, t j =25 o c, v i = 15v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 9.5 10 10.5 v v o output voltage i o =1a v i = 12.5 v 9.4 10 10.6 v d v o line regulation v i = 12.5 to 30 v v i =14to22v 200 100 mv mv d v o load regulation i o = 20 ma to 2 a 150 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 12.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 65 m v svr supply voltage rejection f = 120 hz 53 db v i operating input voltage i o 1.5 a 13 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 6/21
electrical characteristics for l78s12 (refer to the test circuits, t j =25 o c, v i = 19v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 11.5 12 12.5 v v o output voltage i o =1a v i = 14.5 v 11.4 12 12.6 v d v o line regulation v i = 14.5 to 30 v v i =16to22v 240 120 mv mv d v o load regulation i o = 20 ma to 2 a 160 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 14.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 75 m v svr supply voltage rejection f = 120 hz 53 db v i operating input voltage i o 1.5 a 15 v r o output resistance f = 1khz 18 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s15 (refer to the test circuits, t j =25 o c, v i = 23v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 14.4 15 15.6 v v o output voltage i o =1a v i = 17.5 v 14.25 15 15.75 v d v o line regulation v i = 17.5 to 30 v v i =20to26v 300 150 mv mv d v o load regulation i o = 20 ma to 2 a 180 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 17.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 90 m v svr supply voltage rejection f = 120 hz 52 db v i operating input voltage i o 1.5 a 18 v r o output resistance f = 1khz 19 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 7/21
electrical characteristics for l78s18 (refer to the test circuits, t j =25 o c, v i = 26v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 17.1 18 18.9 v v o output voltage i o =1a v i = 20.5 v 17 18 19 v d v o line regulation v i = 20.5 to 30 v v i =22to28v 360 180 mv mv d v o load regulation i o = 20 ma to 2 a 200 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i =22to33v 1 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 110 m v svr supply voltage rejection f = 120 hz 49 db v i operating input voltage i o 1.5 a 21 v r o output resistance f = 1khz 22 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s24 (refer to the test circuits, t j =25 o c, v i = 33v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 23 24 25 v v o output voltage i o =1a v i = 27 v 22.8 24 25.2 v d v o line regulation v i =27to38v v i =30to36v 480 240 mv mv d v o load regulation i o = 20 ma to 2 a 250 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 8 to 25 v 1 ma d v o d t output voltage drift i o = 5 ma t j = -55 to 150 o c -1.5 mv/ o c e n output noise voltage b = 10hz to 100khz 170 m v svr supply voltage rejection f = 120 hz 48 db v i operating input voltage i o 1.5 a 27 v r o output resistance f = 1khz 23 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 8/21
electrical characteristics for l78s05c (refer to the test circuits, t j =25 o c, v i = 10v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 4.8 5 5.2 v v o output voltage i o =1a v i = 7 v 4.75 5 5.25 v d v o line regulation v i = 7 to 25 v v i = 8 to 12 v 100 50 mv mv d v o load regulation i o = 20 ma to 1.5 a i o =2a 80 100 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 7 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1.1 mv/ o c e n output noise voltage b = 10hz to 100khz 40 m v svr supply voltage rejection f = 120 hz 54 db v i operating input voltage i o 1.5 a 8 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s75c (refer to the test circuits, t j =25 o c, v i = 12.5v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 7.15 7.5 7.9 v v o output voltage i o =1a v i = 9.5 v 7.1 7.5 7.95 v d v o line regulation v i = 9.5 to 25 v v i = 10.5 to 20 v 120 60 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 100 140 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 9.5 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -0.8 mv/ o c e n output noise voltage b = 10hz to 100khz 52 m v svr supply voltage rejection f = 120 hz 48 db v i operating input voltage i o 1.5 a 10.5 v r o output resistance f = 1khz 16 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 9/21
electrical characteristics for l78s09c (refer to the test circuits, t j =25 o c, v i = 14v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 8.65 9 9.35 v v o output voltage i o =1a v i = 11 v 8.6 9 9.4 v d v o line regulation v i =11to25v v i =11to20v 130 65 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 100 170 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 11 to 25 v 1.3 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 60 m v svr supply voltage rejection f = 120 hz 47 db v i operating input voltage i o 1.5 a 12 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s10c (refer to the test circuits, t j =25 o c, v i = 15v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 9.5 10 10.5 v v o output voltage i o =1a v i = 12.5 v 9.4 10 10.6 v d v o line regulation v i = 12.5 to 30 v v i =14to22v 200 100 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 150 240 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 12.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 65 m v svr supply voltage rejection f = 120 hz 47 db v i operating input voltage i o 1.5 a 13 v r o output resistance f = 1khz 17 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 10/21
electrical characteristics for l78s12c (refer to the test circuits, t j =25 o c, v i = 19v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 11.5 12 12.5 v v o output voltage i o =1a v i = 14.5 v 11.4 12 12.6 v d v o line regulation v i = 14.5 to 30 v v i =16to22v 240 120 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 150 240 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 14.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 75 m v svr supply voltage rejection f = 120 hz 47 db v i operating input voltage i o 1.5 a 15 v r o output resistance f = 1khz 18 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s15c (refer to the test circuits, t j =25 o c, v i = 23v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 14.4 15 15.6 v v o output voltage i o =1a v i = 17.5 v 14.25 15 15.75 v d v o line regulation v i = 17.5 to 30 v v i =20to26v 300 150 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 150 300 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 17.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 90 m v svr supply voltage rejection f = 120 hz 46 db v i operating input voltage i o 1.5 a 18 v r o output resistance f = 1khz 19 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 11/21
electrical characteristics for l78s18c (refer to the test circuits, t j =25 o c, v i = 26v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 17.1 18 18.9 v v o output voltage i o =1a v i = 20.5 v 17 18 19 v d v o line regulation v i = 20.5 to 30 v v i =22to28v 360 180 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 200 360 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i = 20.5 to 30 v 1 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1 mv/ o c e n output noise voltage b = 10hz to 100khz 110 m v svr supply voltage rejection f = 120 hz 43 db v i operating input voltage i o 1.5 a 21 v r o output resistance f = 1khz 22 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a electrical characteristics for l78s24c (refer to the test circuits, t j =25 o c, v i = 33v, i o = 500 ma unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage 23 24 25 v v o output voltage i o =1a v i = 27 v 22.8 24 25.2 v d v o line regulation v i =27to38v v i =30to36v 480 240 mv mv d v o load regulation i o = 20 ma to 1.5 a i o = 2 a 300 480 mv i d quiescent current 8ma d i d quiescent current change i o = 20 ma to 1a 0.5 ma d i d quiescent current change i o =20ma v i =27to38v 1 ma d v o d t output voltage drift i o = 5 ma t j = 0 to 70 o c -1.5 mv/ o c e n output noise voltage b = 10hz to 100khz 170 m v svr supply voltage rejection f = 120 hz 42 db v i operating input voltage i o 1.5 a 27 v r o output resistance f = 1khz 28 m w i sc short circuit current v i = 27 v 500 ma i scp short circuit peack current 3 a l78s00 series 12/21
figure 6 : supply voltage rejection vs. frequen- cy. figure 7 : output voltage vs. junction tempera- ture. figure 4 : dropout voltage vs. junction tempera- ture. figure 5 : peak output current vs. input/output differential voltage. figure 8 : output impedance vs. frequency. figure 9 : quiescent current vs. junction tempe- rature. l78s00 series 13/21
figure 12 : quiescent current vs. input voltage. figure 13 : fixed output regulator. figure 14 : constant current regulator. figure 10 : load transient response. figure 11 : line transient response. notes : 1. to specify an output voltage, substitute voltage value for oxxo. 2. although no output capacitor is needed for sta- bili ty, it does improve transient response. 3. required if regulator is located an appreciable dis-tance from power supply filter. v xx i o =+i d r 1 l78s00 series 14/21
figure 15 : circuit for increasing output voltage. figure 16 : adjustable output regulator (7 to 30v). figure 17 : 0.5 to 10v regulator. figure 18 : high current voltage regulator. v beq 1 r 1 = i q 1 i req b q 1 v beq 1 i o =i reg +q 1 [i reg ] r 1 r 4 v o =v xx r 1 i r1 5i d r 2 v 0 =v xx (1 + ) + i d r 2 r 1 figure 19 : high output current with short circuit protection. figure 20 : tracking voltage regulator. v beq 2 r sc = i sc l78s00 series 15/21
figure 21 : positive and negative regulator. figure 22 : negative output voltage circuit. figure 23 : switching regulator. figure 24 : high input voltage circuit. v in =v i (v z +v be ) (*) d 1 and d 2 are necessary if the load is connected be- tween + v 0 and v 0 . figure 25 : high input voltage circuit. figure 26 : high output voltageregulator. v in =v z -v be l78s00 series 16/21
figure 27 : high input and output voltage. figure 28 : reducing power dissipation with dropping resistor. v o =v xx +v z1 v i(min) v xx v drop(max) r= i o(max) +i d(max) figure 29 : remote shuntdown. figure 30 : power am modulator (unity voltage gain, io 1a). note : the circuit performs well up to 100khz. figure 31 : adjustable output voltage with tem- perature compensation. note : q 2 is connected as a diode in order to compensate the variati on of the q 1 v be with the temperature. c allows a slow rise-time of the v o r 2 v o =v xx (1 + ) + v be r 1 l78s00 series 17/21
figure 32 : light controllers (v o min =v xx +v be ). v o falls when the light goes up v o rises when the light goes up figure 33 : protection against input short-circuit with high capacitance loads. applications with high capacitance loads and an output voltage greater than 6 volts need an external diode (see fig. 33) to protect the device against input short circuit. in this case the input voltage falls rapidly while the output voltage decreases showly. the capacitance discharges by means of the base- emitter junction of the series pass transistor in the regulator. if the energy is sufficiently high, the tran- sistor may be destroyed. the external diode by- passes the current from the ic to ground. l78s00 series 18/21
dim. mm inch min. typ. max. min. typ. max. a 11.00 13.10 0.433 0.516 b 0.97 1.15 0.038 0.045 c 1.50 1.65 0.059 0.065 d 8.32 8.92 0.327 0.351 e 19.00 20.00 0.748 0.787 g 10.70 11.10 0.421 0.437 n 16.50 17.20 0.649 0.677 p 25.00 26.00 0.984 1.023 r 4.00 4.09 0.157 0.161 u 38.50 39.30 1.515 1.547 v 30.00 30.30 1.187 1.193 c d n b v u r a p e g o p003f to-3 mechanical data l78s00 series 19/21
dim. mm inch min. typ. max. min. typ. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 d1 1.27 0.050 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g 4.95 5.15 0.194 0.203 g1 2.4 2.7 0.094 0.106 h2 10.0 10.40 0.393 0.409 l2 16.4 0.645 l4 13.0 14.0 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.2 15.9 0.598 0.625 l7 6.2 6.6 0.244 0.260 l9 3.5 4.2 0.137 0.165 dia. 3.75 3.85 0.147 0.151 l6 a c d e d1 f g l7 l2 dia. f1 l5 l4 h2 l9 f2 g1 to-220 mechanical data p011c l78s00 series 20/21
information furnished is believed to be accurate and reliable. however, sgs-thomson microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. no license is granted by implication or otherwise under any patent or patent rights of sgs-thomson microelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. sgs-thomson microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of sgs-thomson microelectonics. ? 1994 sgs-thomson microelectronics - all rights reserved sgs-thomson microelectronics group of companies australia - brazil - france - germany - hong kong - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a l78s00 series 21/21

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