unisonic technologies co., ltd UR1170 preliminary cm os ic www.unisonic.com.tw 1 of 6 copyright ? 2013 unisonic technologies co., ltd qw-r502-a31.a 800ma ldo regulator ? descripti on t he u t c ur1 170 is a t y pic a l ldo (li n e a r regul ator) w i t h the features of hig h output voltage accurac y , lo w supply curr ent, lo w on-resistance, and hi gh rip p l e rejecti on. durin g op erati on of the ut c ur1 170 , th e drop out vo ltage i s ver y l o w an d the resp onse o f line transi ent and lo ad tran sient ar e ver y w e ll. internal l y , ther e?re man y fun c tions of ut c ur117 0 w h i c h can be see n in the block figur e. t here ar e a volt age refer ence unit, an error amplifier, resistor-net for volt ag e settin g , a curre nt limit circuit, and a ch ip e n a b le circu i t in ea ch ut c ur117 0 . t he u t c UR1170 ca n be us ed as an id eal of the po w e r s uppl y for hand- hel d communic 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 f o r electrica l appl ia nces, fo r exampl e, ca meras, vcrs and c a mcord e rs an d po w e r s ource f o r batter y -po w ered e qui pmen t. ? features * lo w stan db y current * ultra-lo w s u pply current * output voltag e (step w is e setting w i th a step of 0.1v in the rang e of 1.2v~ 4 .0v) * output curren t (min= 800ma@v in =v out +1 . 0 v) * lo w dr opo ut voltag e * lin e regu latio n * high output v o ltag e accurac y * lo w temp erat ure-drift coeffic i ent of outp u t voltag e * built-in thermal shunt circuit * built-in curr e n t limit circuit ? or de r i ng i n form at i o n ordering n u m ber package packing lead free halogen free UR1170xl-s08-t UR1170xg-s08-t sop-8 tube UR1170xl-s08-r UR1170xg-s08-r sop-8 tape reel u r 1170xl- s08-r (1)p acking ty pe (2) package ty pe (3)le ad free (1) t: tube , r : tape reel (2) s08: so p-8 (3) l: lead fr ee, g: haloge n free (4) l: low, h: high (4)enable thre shold level http://
UR1170 preliminary cm os ic unisonic technologi es co., ltd 2 of 6 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 1 . a ? pin confi guration ? p i n de sc ri pt i o n pin no. pin name descript ion 1, 2 v out voltage regulator output pin 3 ce or ce chip enable pin voltage regulator output pin 4 gnd ground pin 5, 6 v dd input pin 7, 8 nc no connection ? block di agra m v dd 6 5 v dd 3 4 2 1 ce gnd v ou t v ou t - + vref current limit an d otp
UR1170 preliminary cm os ic unisonic technologi es co., ltd 3 of 6 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 1 . a ? absolute maxi mu m ra ting paramet er symbol r at ings unit input voltage v in 7.0 v input voltage(ce or ce input pin) v ce -0.3~v in +0 .3 v output voltage v out -0.3~v in +0 .3 v output current i out 1.2 a power dissipation p d internal l y limite d operating temperature t op t -40~ 85 c storage temperature t st g -55~ 12 5 c 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 = 25c, unless oth e r w is e specifi ed) ur11 70l parameter symbol test conditions min typ max unit input volta g e v in 6.0 v supply current1 i ss1 v in -v out =1.0v, v ce =gnd 80 160 a standby current i stb v in =v ce =6.0v 0.1 1.0 a output voltage v out v in -v out =1.0v, i ou t = 100ma x0.9 8 x1.0 2 v output current i out1 v in -v out = 1 .0v 800 ma load regulation ? v out / ? i out v in -v out =1.0v, 1ma i out 300ma 30 100 mv dropo ut voltag e v dif i out = 300ma v out =1.5 0.35 0.45 v v out =1.6 0.30 0.35 v v out =1.7 0.25 0.30 v v out =1.8 v out 2.0 0.20 0.25 v v out =2.1 v out 2.4 0.15 0.20 v v out =2.5 v out 4.0 0.12 0.18 v line regulation ? v out / ? v in i out =100ma, v out +0.5v v in 8.0v 0.05 0.30 %/v ripp l e re jecti o n rr f= 1khz,rippl e 0.5v p- p, v in -v out = 1 .0v 50 db output voltage temperature coefficient ? v out / ? t i out = 10ma, -40c t a 85c 10 0 ppm /c short curre nt limit i lim v out =0 v 4 0 ma pull-up resistance for ce pin r pu 1.25 2.50 5.00 m ? ce input volta ge ?h? v ce h 1.50 v ce input volta ge ?l? v ce l 0.25 v t hermal shutd o w n det e ctor t h reshold t e mperatur e t tsd junction temperature 150 c t hermal shutd o w n re le ased t e mperature t tsr junction temperature 120 c
UR1170 preliminary cm os ic unisonic technologi es co., ltd 4 of 6 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 1 . a ? electric al ch ara cteri s tic s (cont.) ur11 70h parameter symbol test conditions min typ max unit input volta g e v in 6.0 v supply current i ss v in -v out =1.0v, v ce =v in 80 160 a standby current i stb v in =6.0v, v ce =gnd 0.1 1.0 a output voltage v out v in -v out =1.0v, i ou t = 100ma x0.9 8 x1.0 2 v output current i out v in -v out = 1 .0v 800 ma load regulation ? v out / ? i out v in -v out =1.0v, 1ma io ut 300ma 30 100 mv dropo ut voltag e v dif i out = 300ma v out =1.5 0.35 0.45 v v out =1.6 0.30 0.35 v v out =1.7 0.25 0.30 v v out =1.8 v out 2.0 0.20 0.25 v v out =2.1 v out 2.4 0.15 0.20 v v out =2.5 v out 4.0 0.12 0.18 v line regulation ? v out / ? v in i out =100ma, v out +0.5v v in 8.0v 0.05 0.30 %/v ripp l e re jecti o n rr f= 1khz,rippl e 0.5vp-p 50 db output voltage temperature coefficient ? v out / ? t -40c t opt 85 c 1 0 0 ppm /c short curre nt limit i lim v out =0 v 4 0 ma pull-d o w n res i s t ance for ce pin r pd 1.25 2.5 5 m ? ce input volta ge ?h? v ce h 1.5 v ce input volta ge ?l? v ce l 0.25 v t hermal shutd o w n det e ctor t h reshold t e mperatur e t tsd junction temperature 150 c t hermal shutd o w n re le ased t e mperature t tsr junction temperature 120 c
UR1170 preliminary cm os ic unisonic technologi es co., ltd 5 of 6 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 1 . a ? t est circuit
UR1170 preliminary cm os ic unisonic technologi es co., ltd 6 of 6 w w w . uniso nic.co m.t w q w - r 5 0 2 - a 3 1 . 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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