2002. 10. 4 1/5 semiconductor technical data kia78r25api~kia78r37api bipolar linear integrated circuit revision no : 3 4 terminal low drop voltage regulator the kia78r series are low drop voltage regulator suitable for various electronic equipments. it provides constant voltage power source with to-220 4 terminal lead full molded pkg. the regulator has multi function such as over current protection, overheat protection and on/off control. features 1.0a output low drop voltage regulator. built in on/off control terminal. built in over current protection, over heat protection function. a f j l d m 12 34 1 2 3 4 dc input (v ) dc output (v ) gnd on/off control in o dim millimeters to-220is-4 10.00 0.20 15.00 0.20 2.70 0.20 0.60 0.10 3.20 0.20 3.50 0.10 a b c d e f g 15.70 0.20 0.40 0.10 h 14.3+0.2/-0.1 1.45 0.10 1.00 0.10 2.54 4.50 0.20 7.5 0.1 1.50 0.10 j k l m n o p s r 8 5 b c e g h l v v u t k n o r s p + _ + _ + _ 1.30 0.1 3-1.00 0.1 1.30 0.1 t u v + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ maximum rating (ta=25 ) line up item output voltage (typ.) unit * kia78r25api 2.5 v * kia78r30api 3.0 kia78r33api 3.3 * kia78r35api 3.5 * kia78r37api 3.7 characteristic symbol rating unit remark input voltage v in 15 v - on/off control voltage v c 15 v - output current i o 1 a - power dissipation 1 p d1 1.5 w no heatsink power dissipation 2 p d2 15 w with heatsink junction temperature t j 125 - operating temperature t opr -20 80 - storage temperature t stg -30 125 - soldering temperature (10sec) t sol 260 - note) * : under development
2002. 10. 4 2/5 kia78r25api~kia78r37api revision no : 3 electrical characteristics (unless otherwise specified, i o =0.5a, ta=25 , note1.) characteristic symbol conditions min. typ. max. unit output voltage kia78r25 v o - 2.438 2.50 2.562 v kia78r30 - 2.925 3.00 3.075 kia78r33 - 3.220 3.30 3.380 kia78r35 - 3.413 3.50 3.587 kia78r37 - 3.608 3.70 3.792 load regulation reg load i o =5ma 1a - 0.1 2.0 % line regulation reg line (note 2) - 0.5 2.5 % temperature coefficient of output voltage t c v o tj=0 125 ? - 0.02 0.05 %/ ripple rejection r r - 45 55 - db drop out voltage v d i o =1a - - 0.5 v output on state for control voltage v c(on) - 2.0 - - v output on state for control current i c(on) v c =2.7v - - 20 a output off state for control voltage v c(off) - - - 0.8 v output off state for control current i c(off) v c =0.4v - - -0.4 ma quiescent current i q i o =0 - - 10 ma note1) v in of kia78r25=4.2v note2) v in of kia78r25=3.2 10v note3) at v in =0.95v o " kia78r30=4.7v " kia78r30=3.7 10v " kia78r33=5.0v " kia78r33=4.0 10v " kia78r35=5.2v " kia78r35=4.2 10v " kia78r37=5.4v " kia78r37=4.4 10v block diagram over heat protection control output on/off aso protection bandgap reference - + 1 4 2 3 v o v in control gnd
2002. 10. 4 3/5 kia78r25api~kia78r37api revision no : 3 12 3 4 a a a v 0.33 f i i r i q c l o v o c v v in 47 f fig. 1 standard test circuit kia78rxxapi specific ic 4 1 3 2 on/off signal c o load v o high or open : output on low : output off cmos or ttl in v fig. 2 application circuit for standard 12 3 v 0.33 f r l e o v in 47 f fig. 1-2 ripple rejection test circuit e i f=120hz(sine wave) ei=0.5vrms rr=20log(ei/eo) kia78rxxapi 4
2002. 10. 4 4/5 kia78r25api~kia78r37api revision no : 3 o output voltage deviation v (mv) -100 -25 junction temperature t ( c) j j o fig.5-1 t - v (kia78r25) 0 25 50 75 100 125 -50 0 50 100 150 v =4.2v i =0.5a in o j junction temperature t ( c) fig.5-3 t - v (kia78r33) output voltage deviation v (mv) o j o relative output voltage (%) 0 0 output current i (a) o fig.4 i - v 0.5 1.0 1.5 2.0 20 40 60 80 100 o o output voltage deviation v (mv) junction temperature t ( c) j fig.5-4 t - v (kia78r35) o j o output voltage deviation v (mv) 25 junction temperature t ( c) -25 -100 -50 0 50 0 100 50 75 j 125 fig.5-2 t - v (kia78r30) 150 100 o i =0.5a v =4.7v o in -100 -25 0 25 50 75 100 125 -50 0 50 100 150 v =5.0v i =0.5a in o 25 -25 -100 -50 0 50 0 100 50 75 150 100 i =0.5a v =5.2v o in j o d power dissipation p (w) ambient temperature ta ( c) fig.3 ta - p note) oblique line portion : overheat protection may operate in this area. d 0 -25 0 50 100 150 5 10 15 20 p 1:no heat sink p 2:with infinite heat sink d d p 1 p 2 d d
2002. 10. 4 5/5 kia78r25api~kia78r37api revision no : 3 fig.7 t - i junction temperature t ( c) 0 -25 quiescent current i (ma) q j q j 0 25 50 75 100 125 2 4 6 8 10 v =35v i =0 in o fig.8-1 f - rr input ripple frequency f (khz) 0.1 0 ripple rejection rr (db) 10 20 30 40 50 60 70 80 110100 i =0.5a,ei=0.5v v =4.2v(kia78r25) o in rms v =5.2v(kia78r35) in ripple rejection rr (db) output current i (a) v =5.2v(kia78r35) v =4.2v(kia78r25) c =3.3 f 0.1 20 in in ref rms fig.10-2 i - rr o o f=120hz,ei=0.5v 0.5 1.0 30 40 50 60 70 v =4.7v(kia78r30) in v =5.0v(kia78r33) in v =5.0v(kia78r33) in v =5.4v(kia78r37) in v =4.7v(kia78r30) in v =5.4v(kia78r37) in fig.6 t - v junction temperature t ( c) 0 -25 dropout voltage v (v) d j i =1a o d j 0 25 50 75 100 125 0.1 0.2 0.3 0.4 0.5 i =0.75a o i =0.5a o i =0.25a o fig.5-5 t - v (kia78r37) junction temperature t ( c) -150 output voltage deviation v (mv) -25 -200 02550 o j i =0.5a v =5.4v 100 -50 -100 50 0 200 150 250 o in o 100 j 75 125
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