2006. 4. 6 1/5 revision no : 1 semiconductor technical data KIA278R000FP/pi bipolar linear integrated circuit 2a adjustable output low drop voltage regulator with output on/off control function. [low quiescent current type] features 2.0a output low drop voltage regulator. very low dropout voltage : 0.5v/max. (i out =2.0a) built in on/off control terminal. (active high) built in over current, over heat protection function, aso proteection functions. low quiescent current (output off mode) : 0.5 a(typ.) adjustable output voltage type : v out =1.5~10v low voltage operation : vopr(min.)=2.35v. maximum ratings (ta=25 ) characteristic symbol rating unit input voltage v in 10 v on/off control voltage v c 10 v output adjustment terminal voltage v adj 5 v output current i out 2.0 a power dissipation 1 (no heatsink) pi p d1 1.5 w fb 2.0 power dissipation 2 (infinite heatsink) pi p d2 15 w fb 35 junction temperature t j 150 operating temperature t opr -20 80 storage temperature t stg -30 125
2006. 4. 6 2/5 KIA278R000FP/pi revision no : 1 electrical characteristics (unless otherwise specified, v in =5v, v o =3.3v, i o =1a, r 1 =1 , tj=25 ) characteristic symbol conditions min. typ. max. unit input voltage v in - 2.35 - 10 v output voltage v out - 1.5 - 10 v reference voltage v ref - 1.22 1.25 1.28 v load regulation reg load i o =5ma~2a - 0.2 2.0 % line regulation reg line v in =v out +1 to 8.5v, i o =5ma - 0.2 1.0 % temperature coefficient of output votage t c v o tj=0 125 , i o =5ma - 1.0 20 % ripple rejection r r i out =0.3a, f=120hz, v ripple =0.5vrms, v in =5v, v o =3v 45 60 - 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 - - 200 a output off state for control voltage v c(off) i o =0 - - 0.8 v output off state for control current i c(off) v c =0.4v - - 2.0 a quiescent current i q i o =0 - 1 2 ma quiescent current (off mode) i q(off) v c =0.4v - 0.1 5 a block diagram item pin no. kia278r000pi (to-220is-4) KIA278R000FP (d 2 pak-5) 1 v in v in 2 v out v out 3 gnd gnd 4 adj adj 5 - v c pin connection
2006. 4. 6 3/5 KIA278R000FP/pi revision no : 1 (1) v out = vref (1+r 2 /r 1 ), (r 1 =1k , vref=1.25v) (2) pin (v c ) terminal is only for KIA278R000FP (d 2 pak-5) (1) on/off signal [ high : output on] [low/open : output off] (2) v out = vref (1+r 1 /r 2 ), (r 1 =1k , vref=1.25v) (3) pin (v c ) terminal is only for KIA278R000FP (d 2 pak-5)
2006. 4. 6 4/5 KIA278R000FP/pi revision no : 1
2006. 4. 6 5/5 KIA278R000FP/pi revision no : 1
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