unisonic technologies co., ltd lr4xxyy preliminary cm os ic www.unisonic.com.tw 1 of 7 copyright ? 2013 unisonic technologies co., ltd qw-r502-a39.a dual low-noise 200ma ldo regulator ? descripti on t he u t c lr4xxyy are dual voltage regu la tor ics that have high outp u t voltage acc u rac y , l o w dro pout, lo w su pp l y c u rre nt, and high ri ppl e rej e ction. ever y chan ne l of ut c lr4xxyy series consists of a voltage ref e renc e u n it an d over temp erature protectio n , simultan eit y ; a l s o consists of an error am plifier, a current limit circuit, resistors fo r setting outp u t voltage, and a chip ena ble circu i t, respectiv e l y . t he en1 and e n 2 pins contro l each output resp ecti vel y , w h e n bot h outputs sh utdo w n sim u lta n eousl y , the chi p w i ll be turn off an d cons umes n earl y z e ro o p e ratio n current w h ic h i s suitabl e for batter y -p o w er d e vices. t he load transient respons e and li ne transi e nt response of the ut c lr4xxy y series are e x ce lle nt, so the s e ics are suit able for han d-he ld com m unicati on e q u i pment p o w e r s uppl y. ? features * 200ma guar antee d output current(eac h l d o) * dual s hutdo w n p i ns c ontro l each output * 120mv dr op out at 100ma l oad * current lim i ti ng protectio n * t hermal shutdo w n pr otectio n * exce lle nt lin e /loa d t r ansient * rohs com p li ant and 1 0 0 % lea d (pb)-f ree sot-26 4 5 3 2 1 6 ? or de r i ng i n form at i o n ordering n u m ber package packing lead free halogen free lr4xxyyl-ag6-r lr4xxyyg-ag6-r sc59-6 tape reel note: xx yy: output voltage, refer to marki ng information. http://
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 2 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? mar k ing i n formati ons package code voltage code marking xx yy sot-26 a 28: 2.8v 28: 2.8v b 30: 3.0v 30: 3.0v c 12: 1.2v 18: 1.8v d 18: 1.8v 28: 2.8v e 18: 1.8v 33: 3.3v f 33: 3.3v 18: 1.8v ? pin configurations ? p i n de sc ri pt i o n pin no. pin name descript ion 1 v out2 channel 2?s voltage output 2 gnd ground 3 en2 channel 2?s output enable control pin 4 en1 channel 1?s output enable control pin 5 v in voltage input pin 6 v out1 channel 1?s voltage output
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 3 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? block di agra m 4 5 3 2 current limit current limit 1 r2-1 r1 -1 r2-2 r1 -2 v ref 6 v ref v ou t 1 gnd v out2 en2 v in en1
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 4 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? absolute maxi mu m ra ting s (note 1) parameter symbol ratings unit supp l y in put v o ltag e(operati ng) v in 2.5 ~ 5.5 v supply input voltage(survival) -0.3 ~ +6.5 enable input voltage v en 0 ~ 5.5 v lea d t e mperature (sol deri ng, 10 sec.) + 260 c esd ratin g (note 2) 2 kv junction temperature t j -40 ~ +125 c storage temperature range t stg -65 ~ +150 c operation temperature range t opr -40 ~ +85 c ? electric al ch ara cteri s tic s (v in = v ou t + 0 .5v or 2.5v, c in = c ou t = 2. 2 f, en1=en2=v in , t a = 25c, for each ldo u n less oth e r w is e specifi ed) notes 1. lim i ts be yo nd w h ich d a mag e t o the devic e ma y o ccur is indic a ted by absolut e max i m u m ratings. cond itio ns for w h ich the d e vi ce is intend ed to be func tiona l is indicate d b y op eratin g ratings, but specif ic performa nce` li mits isn?t be g uara n teed. onl y for th e test conditi ons listed the gu arant ee d specific atio n s can be app lie d. w hen the device is not oper ated un de r the listed te st conditions s o me performa nce characteristics ma y d egr ade. 2. w h ich disch arge d throug h a 1.5k ? resisto r into each p i n i s a 100pf cap a citor in the h u m an bo d y m o d e l. 3. t he dropo ut voltag e is defin ed as v in -v out , w h ic h is mea sured w h en v ou t is v ou t ( norma l ) ? 100mv. paramet er symbol t es t conditions min t y p max unit output voltage accuracy (loa d reg u lati on) ? v out i out = 1 ma to 200ma -2 + 2 % maximum output current i ma x contin ous 200 ma current limit i lim r load =1 ? 500 1000 ma quiescent current i g no lo ad 165 260 a i out = 100ma(b o th ldos) 165 260 a dropo ut voltag e(note 3) v drop i out 1ma 20 mv i out 100ma 120 mv i out 200ma 255 mv line regulation ? v line v in = ( vout+ 0 .5v or 2.5v) to 5.5v i out =1 ma -0.2 +0.2 %/v en input hig h t h reshold v ih v in 2.5v to 5.5v 1.6 v en input lo w t h resh old v il v in 2.5v to 5.5v 0.4 v en input bias current i sd en=gnd or v in 100 na shutdown supply current i gsd en1 en2 gnd 0.01 2 a t hermal shutd o w n t e mperat ure t sd 140 c t hermal shutd o w n h y ster esis ? t sd 10 c output voltag e noise e no 10~ 10 0khz c out =4 .7 f i load =1 ma 124 v rms output voltage ac psrr psrr 100hz c out 4.7 f i load 100ma 62 db
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 5 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? test circuits f i g.1 standar d t e st circuit en2 v in en1 v out1 gnd c1 2. 2 f c2 2.2 f c3 2.2 f v ou t2 a i ss f i g.2 supp l y c u rrent t e st circuit
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 6 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? test circuits(cont.) en2 v in en1 v out1 gnd c2 2.2 f c3 2.2 f v ou t2 i out1 i out 2 pg pulse generator f i g.3 rip ple r e jectio n, lin e t r ansie nt resp o n se t e st circuit f i g.4 loa d t r a n sient r e spo n s e t e st circuit
lr4xxyy preliminary cm os ic unisonic technologi es co., ltd 7 of 7 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 9 . a ? ty pic a l a ppli c a t io n ci rcui t 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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