unisonic technologies co., ltd l11830 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2011 unisonic technologies co., ltd qw-r502-536.a 3a low dropout linear regulator ? description the utc l11830 belonged to low quiescent current, low dropout, linear regulators operated fr om 2.25v to 6v input and are guaranteed to deliver 3a. wide range of preset output voltage options are available. built-in low on-resistance transistor provides low dropout voltage and large output current. the utc l11830 is designed and optimized for battery-powered systems to work with low noise. the utc l11830 consumes less than 2 a in shutdown mode. o ther features include ultra low dropout voltage, current limiting protection, thermal shutdown protection and high ripple rejection ratio. ? features * 3a guaranteed output current * low quiescent current : 60 a (typ.) * 2 a shutdown current * short circuit current fold-back * low temperature coefficient * current limiting protection * thermal shutdown protection * excellent line/load transient * sense option improves load regulation ? ordering information note: pin assignment: i:v in o:v out g:gnd s: shdn a: sense ordering number pin assignment lead free halogen free package 1234 5 packing l11830l-xx-tq2-d-r L11830G-XX-TQ2-D-R to-263 i g o - - tape reel l11830l-xx-tq2-d-t l11830g-xx-tq2-d-t to-263 i g o - - tube l11830l-xx-tq3-a-r l11830g-xx-tq3-a-r to-263 g o i - - tape reel l11830l-xx-tq3-a-t l11830g-xx-tq3-a-t to-263 g o i - - tube l11830l-xx-tq5-r l11830g-xx-tq5-r to-263-5 i s g a o tape reel l11830l-xx-tq5-t l11830g-xx-tq5-t to-263-5 i s g a o tube
l11830 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-536.a ? marking information package voltage code marking to-263 15 :1.5v 18 :1.8v 25 :2.5v 33 :3.3v to-263-5 15 :1.5v 18 :1.8v 25 :2.5v 33 :3.3v
l11830 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-536.a ? pin configuration ? pin description pin name description v in power input voltage. supply voltage can range from 2.25v to 6v. bypass with a 0.1f capacitor to gnd. gnd ground shdn active-low shutdown input. a logic low at shdn reduces supply current to 0.01a. connect shdn to v in for normal operation. v out output voltage sense remote sense pin.
l11830 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-536.a ? block diagram shdn v ref thermal sensor current limit off on gnd v out shdn v in sense + - err amp
l11830 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-536.a ? absolute maximum rating (t a =25 ) parameter symbol ratings unit supply voltage v in 7 v power dissipation to-263/to-263-5 p d internally limited mw junction temperature t j +150 operation temperature t opr -40 ~ +125 storage temperature t stg -65 ~ +150 note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit junction to ambient to-263/to-263-5 ja 64 c/w junction to case to-263/to-263-5 jc 4 c/w ? electrical characteristics (v in = v out + 1v whichever is greater, c in =0.1f, c out =2.2f(ceramic), t a = 25c, unless otherwise specified) parameter symbol test conditions min typ max unit input voltage v in note1 6 v ta 25 , i out = 1ma ~3a -2 2 output voltage accuracy v out ta 0~85 , i out = 1ma~3a -3 3 % maximum output current i out 3 a short-circuit current limit i limit v out >1.2v 4.5 a short-circuit current i sc v out <0.4v 1 a i out = 0ma 60 350 ground pin current i gnd i out = 1ma to 3a 60 a 1.5v<=v out <=1.8v 1000 1.8v l11830 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-536.a ? typical application circuit for to-263 for to-263-5
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