2008. 6. 24 1/5 semiconductor technical data kia278r25pi~KIA278R35PI bipolar linear integrated circuit revision no : 7 4 terminal 2a output low dropout voltage regulator the kia278r series are low dropout 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 2.0a output low dropout voltage regulator. built in on/off control terminal. built in over current protection, over heat protection function. line up 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 + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ (v c ) maximum ratings (ta=25 ) item output voltage (typ.) unit kia278r25pi 2.5 v kia278r33pi 3.3 KIA278R35PI 3.5 characteristic symbol rating unit remark input voltage v in 35 v - on/off control voltage v c 35 v - output current i o 2 a - power dissipation 1 p d1 1.5 w no heatsink power dissipation 2 p d2 15 w infinite heatsink operating junction temperature t j(opr) -40 150 - storage temperature t stg -45 150 - soldering temperature (10sec) t sol 260 -
2008. 6. 24 2/5 kia278r25pi~KIA278R35PI revision no : 7 bandgap reference 1 4 v o v in - + control output on/off over heat protection 2 aso protection 3 gnd v c electrical characteristics (unless otherwise specified, i o =1.0a, ta=25 , note1.) block diagram note1) v in of kia278r25=4.2v note2) v in of kia278r25=3.2 10v note3) at v in =0.95v o " kia278r33=5.0v " kia278r33=4.0 10v " kia278r35=5.2v " kia278r35=4.2 10v characteristic symbol conditions min. typ. max. unit output voltage kia278r25 v o - 2.438 2.50 2.562 v kia278r33 - 3.220 3.30 3.380 kia278r35 - 3.413 3.50 3.587 load regulation reg load i o =5ma 2a - 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 dropout voltage v d i o =2a - - 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
2008. 6. 24 3/5 kia278r25pi~KIA278R35PI revision no : 7
2008. 6. 24 4/5 kia278r25pi~KIA278R35PI revision no : 7
2008. 6. 24 5/5 kia278r25pi~KIA278R35PI revision no : 7
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