unisonic technologies co., ltd LR9101 preliminary cm os ic www.unisonic.com.tw 1 of 4 copyright ? 2013 unisonic technologies co., ltd qw-r502-a14.a low noise 300ma ldo regulator ? descripti on t he u t c l r 9101 is a t y pic a l ldo (line a r regulator) w i t h the features of h i g h outp u t volta ge acc u rac y , l o w sup p l y curr ent, lo w on-resistance, and hi gh rip p l e rejecti on. durin g oper ati on of the u t c l r 9101 , the dropo ut voltage is ver y l o w a nd the resp onse o f li ne transi ent and l oad tra n si ent are ver y w e ll. internally , there?re m any fu ncti o n s o f u t c l r 9101 wh i c h c a n be see n in th e block fig u re. t here ar e a vo ltage ref e renc e unit, an error amplifier, resistor-net for volt ag e setting, a current limit circuit, and a ch ip e n a b le circu i t in ea ch ut c l r 9101 . t he ut c l r 9 101 c an be us ed as an id eal of the p o w e r s uppl y for han d-he ld c o mmunic a tio n equi pme n t, such as: po w e r so urce for portab l e com m unicati on eq uipme n t, po w e r source for electrical appl ia nces, fo r exampl e, ca meras, vcrs and c a mcord e rs and po w e r s ource f o r batter y -po w ered e qui pmen t. ? features * supp l y curre nt: 50a (t y p .) * standb y mo de: 0.1a (t yp.) * ver y l o w dro p out voltag e: 0.17v (t yp.) @i out = 150ma , v out =2 .5 v * ripp l e re jecti o n: 70db (t y p .) @f=1khz,v out =2 .5 v * well lin e re gu lation: 0.02%/ v (t y p . ) * output voltage accuracy : 1.0% (t y p .) * c in =c out = 1f or more (cera m ic capacit ors) are recomme n ded to be used w i th this ic ? or de r i ng i n form at i o n ordering n u m ber package packing lead free halogen free LR9101l-xx-ae5-r LR9101g-xx-ae5-r sot-23-5 tape reel note: xx: output voltage, refer to marki ng information. http://
LR9101 preliminary cm os ic unisonic technologi es co., ltd 2 of 4 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 1 4 . a ? mar k ing i n formati on package voltage code marking sot - 23-5 12: 1.2v 18: 1.8v 27: 2.7v 25: 2.5v 28: 2.8v 33: 3.3v ? pin confi guration ? p i n de sc ri pt i o n pin no. pin name descript ion 1 v in input pin 2 gnd ground pin 3 ce chip enable pin. active when this pin is high. 4 nc no connection 5 v out output pin ? block di agra m + - current limit r e fere nce voltage gnd v out ce v in
LR9101 preliminary cm os ic unisonic technologi es co., ltd 3 of 4 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 1 4 . a ? absolute maxi mu m ra ting paramet er symbol r at ings unit input volta g e v in 6 v input volta ge ( c e pin) v ce 6 v output voltage v out -0.3~ v in +0.3 v output current i out 400 ma po w e r diss i pat ion p d 420 mw junctio n t e mperature t j + 125 operatin g t e mperatur e t opr -4 0 ~+8 5 storage t e mperature t st g -55~ + 125 note: absol u te ma xi mum ratings ar e those val ues be yo nd w h ich the dev ice cou l d be perm ane n t l y dam ag ed. absol u te ma xi mum ratings ar e stress ratings onl y an d functi onal devic e op er atio n is not i m plie d. ? electric al ch ara cteri s tic s (t a = 25 , v in =set v out +1 v, i out =1 ma, c i =c o = 1f , unles s other w i s e sp ecified) paramet er symbol t es t conditions min t y p max unit output voltage v out v in = set v ou t +1 v, v out > 2.0v 0 .99 1 .01 v v out 2.0v 20 v input volta g e v in 6 v loa d reg u lati o n ? v out 1ma i out 150 ma 20 40 mv output current i out 300 ma supp l y curre nt i ss i out = 0 a 50 a supp l y curre nt (standb y) i st -b y v ce =0 v 0.1 2 a short curre nt limit i lim i t v out = 0 v 200 ma ce pull-d o w n current i pd 0.3 a ce input voltage high v ce h 1.2 v lo w v ce l 1.1 v output noise en b w =10hz to 100khz, i out = 30ma 30 vrms ripp l e re jecti o n rr f= 1khz, ripple 0.2v p- p v in =se t v out +1v, i out = 30ma (in case that v out =2.0v, v in =3v) 70 db dropout voltage v d i out =150ma 1.2v v out < 1 .5v 0.40 v 1.5v v out < 1 .7v 0.24 1.7v v out < 2 .0v 0.21 2.0v v out < 2 .5v 0.19 2.5v v out < 2 .8v 0.17 2.8v v out 5.0 v 0.15 line regulation in out ? v ? v 1.2v v out 4.0 v , v set +0 .5 v v in 5v 0.02 0.10 %/v
LR9101 preliminary cm os ic unisonic technologi es co., ltd 4 of 4 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 1 4 . a ? t est circuit c1 1.0f v in v ou t gnd ce ut c lr 9101 c2 1.0f v out v i out basic test circuit test circuit for supply current c1 1.0f v in v out gnd ce utc lr91 01 a c2 1.0f i ss ? ty pic a l a ppli c a t io n ci rcui t utc LR9101 gnd out ce v in in c2 1. 0 f v out c1 1. 0 f ut c a s s u m e s n o r e s p o n s i b ilit y f o r e q u ip m e n t f a ilu r e s t h a t r e s u lt f r o m u s in g p r o d u cts a t v a lu e s th a t ex ce ed, ev e n m om en t ar i l y , r ate d v a l ue s (s uch as m a x i m um rati ngs , ope ra ti ng con di t i o n ra ng es , o r other parameters ) l i s ted i n pr odu cts s peci f i c a t i on s of a ny and all u t c p r od ucts d es c r i bed o r contai ne d her ei n. ut c p r od ucts a r e n ot de si gn ed f or us e i n l i f e s upp ort a p p l i ances , de v i ce s o r sy st em s w her e m a l f un cti o n o f thes e p r od ucts ca n b e rea son abl y ex pected to re su l t i n per so n a l i n j u r y . r epr od ucti o n i n w hol e o r i n par t is p r oh i b i t e d w i tho u t the p r i o r w r i tte n con sent o f the co pyr i ght ow n e r . t h e i n f o rm ati o n pre sen ted i n th i s do cum e n t d o e s no t f o r m pa rt of an y q uotati o n or con t ra ct, i s b e l i e v e d to b e a ccu rate and re l i a b l e a nd m a y be cha n g ed w i tho u t n o ti ce.
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