page no. : 1/8 ds-rs78l05_12-05 february, 2007 www.orister.com rs78l05 rs78l12 3-terminal positive voltage regulators description these regulators employ internal current -limiting and thermal-shutdown, making them essentially indestructible. they can deliver up to 100ma output current. features ? maximum output current of 100ma (t c =25 ? c) ? internal short-circuit current limiting ? internal thermal overload protection ? to-92 & sot-89 package absolute maximum ratings (t a =25 ? c, unless otherwise specified) characteristic symbol rating unit input voltage v in 30 v to-92 700 mw power dissipation p d sot-89 500 mw operating temperature t opr -40 to 125 o c storage temperature t stg -65 to 150 o c junction temperature t j 150 o c thermal resistance r th(j-a) 208 o c/w schematic diagram & equivalent circuit rs78lxx series pin assignment typical application schematic diagram equivalent circuit v out v in 3-lead plastic to-92 package code: a pin 1: v out pin 2: gnd pin 3: v in 1 2 3 3-lead plastic sot-89 package code: m pin 1: v out pin 2: gnd pin 3: v in 1 2 3 note 1: c in is required if regulator is located an appreciable distance from power supply filter. note 2: c out is not needed for stability; however, it does improve transient response. values of less than 0.1uf could cause instability. 3 1 2 starting circuit reference voltage current generator error amplifier soa protection thermal protection series pass element output gnd input
page no. : 2/8 ds-rs78l05_12-05 february, 2007 www.orister.com rs78l05 electrical characteristics v in =10v, i out =40ma, c in =0.33uf, c out =0.1uf, 0 ? c ? t j ? 125 ? c (unless otherwise specified) rs78l05am/aa symbol parameter conditions min typ max units t j =25 ? c 4.85 5 5.15 1ma ? i out ? 70ma v o output voltage 7v ? v in ? 20v, 1ma ? i out ? 40ma 4.85 5 5.15 v t j =25 ? c, 7v ? v in ? 20v - 15 150 reg line line regulation t j =25 ? c, 8v ? v in ? 20v - 15 100 mv t j =25 ? c, 1ma ? i out ? 100ma - 5 60 reg load load regulation t j =25 ? c, 1ma ? i out ? 40ma - 8 30 mv i b quiescent current i out =5ma, t j =25 ? c - 3.9 6 ma 8v ? v in ? 20v, t j =25 o c - - 1.5 ? i b quiescent current change 1ma ? i out ? 40ma, t j =25 o c - - 0.1 ma v n output noise voltage 10hz ? f ? 100khz, t j =25 ? c - 40 - uvrms rr ripple rejection 8v ? v in ? 18v, f=120hz, t j =25 o c 47 62 - db v d dropout voltage t j =25 ? c, i out =100ma - 1.7 2.5 v i pk peak output current 150 ma r o output resistance f=1khz - 17 - m ? t cvo average temperature coefficient of output voltage i out =5ma - - -0.6 mv/ ? c
page no. : 3/8 ds-rs78l05_12-05 february, 2007 www.orister.com rs78l12 electrical characteristics v in =19v, i out =40ma, c in =0.33uf, c out =0.1uf, 0 ? c ? t j ? 125 ? c (unless otherwise specified) rs78l12am/aa symbol parameter conditions min typ max units t j =25 ? c 11.64 12 12.36 1ma ? i out ? 70ma v o output voltage 14.5v ? v in ? 27v, 1ma ? i out ? 40ma 11.64 12 12.36 v t j =25 ? c, 14.5v ? v in ? 27v - 15 150 reg line line regulation t j =25 ? c, 16v ? v in ? 27v - 15 100 mv t j =25 ? c, 1ma ? i out ? 100ma - 20 100 reg load load regulation t j =25 ? c, 1ma ? i out ? 40ma - 10 50 mv i b quiescent current i out =5ma, t j =25 ? c - 3.9 6 ma 16v ? v in ? 27v, t j =25 o c - - 1.5 ? i b quiescent current change 1ma ? i out ? 40ma, t j =25 o c - - 0.1 ma v n output noise voltage 10hz ? f ? 100khz, t j =25 ? c - 80 - uvrms rr ripple rejection 15v ? v in ? 25v, f=120hz, t j =25 o c 41 54 - db v d dropout voltage t j =25 ? c, i out =100ma - 1.7 2.5 v i pk peak output current 150 ma r o output resistance f=1khz - 17 - m ? t cvo average temperature coefficient of output voltage i out =5ma - - -1.4 mv/ ? c
page no. : 4/8 ds-rs78l05_12-05 february, 2007 www.orister.com test circuits application circuits constant current regulator circuit for increasing output voltage adjustable output regulator high output current with short-circuit protection v out =v out(ic) +v z i 1 =v out(ic) /r 1 v out =v out(ic) (1+r 2 /r 1 )+r 2 *i b v out =v out(ic) (1+r 2 /r 1 ) r 1 ? v be1 /i b(max) r sc =v be2 /i sc , i sc : short-circuit current
page no. : 5/8 ds-rs78l05_12-05 february, 2007 www.orister.com characteristics curve ripple rejection 0 10 20 30 40 50 60 70 10 100 1000 10000 100000 1000000 frequency (hz) ripple rejection (db) ... v in =(4.5+v out(ic) )v dc +3.5v rms i out =40ma t j =25 o c output voltage as a function of junction temperature -2 -1 0 1 2 0 50 100 150 200 junction temperature ( o c) output voltage (v) io= 5m a load transient response -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 5 10 15 20 25 30 35 40 45 50 time (us) output voltage deviation (v) ... 100 50 0 load current (ma) vin=vout(ic)+5v tj=25 o c voltage range 0 5 10 15 20 25 30 35 vinput-voutput (v) voutput (v) v o worst case power dissipation (to-92 package) 0 100 200 300 400 0 5 10 15 20 25 30 35 vinput-voutput voltage (v) output current (ma ) 0.0 0.05 0.1 0.15 0.2 output current (a) t j =25 v o out p ut volta g e ( v ) current cut-off grid voltage
page no. : 6/8 ds-rs78l05_12-05 february, 2007 www.orister.com to-92 dimension sot-89 dimension ordering information part number v out : package part number v out : package rs78l05aa 5v ? 0.25v to-92 rs78l05am 5v ? 0.25v sot-89 RS78L12AA 12v ? 0.60v to-92 rs78l12am 12v ? 0.60v sot-89 3 1 a d b c i ? 1 e ? 2 ? 3 g h 2 f dim min. max. a 4.33 4.83 b 4.33 4.83 c 12.70 - d 0.36 0.56 e - *1.27 f 3.36 3.76 g 0.36 0.56 h - *2.54 i - *1.27 ? 1 - *5 ? ? 2 - *2 ? ? 3 - *2 ? *: typical, unit: mm 3-lead to-92 plastic package package code: a 3 2 1 a b c d e f g h i j dim min. max. a 4.40 4.60 b 4.05 4.25 c 1.50 1.70 d 2.40 2.60 e 0.36 0.51 f *1.50 - g *3.00 - h 1.40 1.60 i 0.35 0.41 *: typical, unit: mm 3-lead sot-89 plastic surface mounted package package code: m
page no. : 7/8 ds-rs78l05_12-05 february, 2007 www.orister.com soldering methods for orister?s products 1. storage environment: temperature=10 o c~35 o c humidity=65%15% 2. reflow soldering of surface-mount devices profile feature sn-pb eutectic assembly pb-free assembly average ramp-up rate (t l to t p ) <3 o c/sec <3 o c/sec preheat - temperature min (ts min ) - temperature max (ts max ) - time (min to max) (ts) 100 o c 150 o c 60~120 sec 150 o c 200 o c 60~180 sec ts m a x t o t l - ramp-up rate <3 o c/sec <3 o c/sec time maintained above: - temperature (t l ) - time (t l ) 183 o c 60~150 sec 217 o c 60~150 sec peak temperature (t p ) 240 o c +0/-5 o c 260 o c +0/-5 o c time within 5 o c of actual peak temperature (t p ) 10~30 sec 20~40 sec ramp-down rate <6 o c/sec <6 o c/sec time 25 o c to peak temperature <6 minutes <8 minutes 3. flow (wave) soldering (solder dipping) products peak temperature dipping time pb devices. 245 o c ? 5 o c 5sec ? 1sec pb-free devices. 260 o c +0/-5 o c 5sec ? 1sec figure 1: temperature profile t p t l ramp-down ramp-up ts max ts min critical zone t l to t p t s preheat t l t p 25 t 25 o c to peak time temperature
page no. : 8/8 ds-rs78l05_12-05 february, 2007 www.orister.com important notice: ? all rights are reserved. reproduction in whole or in part is pr ohibited without the prior written approval of orister corporat ion. ? orister corporation reserves the right to make changes to its products without notice. ? orister corporation products are not warranted to be suitable for use in life-support applications, or systems. ? orister corporation assumes no liability for any consequence of customer product desi gn, infringement of patents, or applicati on assistance.
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