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EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 1 of 1 1 5d23n rev, f001 introduction (general d escription) the ec5 04 31s ser i es ics are thre e - terminal adj u s table sh u nt regu l ators with guar a nte e d thermal st a bi l ity over a full operati o n r a nge. th e s e ics feature sharp turn on char a c t erist i cs, low temperature coeffic i ent a n d low output imped a nce, wh i c h m a ke t hem id e al s u bstitutes f o r z ener dio d es in applicati o ns s u ch as swi t chi n g power supply, ch a rg e r a n d other ad j ust a ble re g ulat o rs. the ec5 0 4 3 1s seri e s ics contain two voltage types, 36v. the output voltage of both types can be s et t o a ny v a l ue b e t w ee n v ref (2.5 0 v) and t h e corr esp ondi n g maximum cathode volta g e. the ec 5 04 3 1s pr e c is i on refere n c e i s offered in two ban d gap tol e rance: 0.5%. these ics are available s ot - 2 3 - 3 features ? programm a b l e prec i s e o utput voltage from v ref to36v. ? very accura t e refere n c e voltage: 0.5% typical ? high stability und e r c a p a c i tive load ? sink c u rrent ca p acity fr o m 1 ma to 100 ma ? low o utput noise ? wide o perating r a nge of - 40 to 85 ? available in rohs c o mpli a nt packag e s. applications figure1. package types of EC50431S ? voltage ada p ter ? swit c hing power supply ? gra p hic c a rd ? prec i s i o n voltage refer e nce
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 2 of 1 1 5d23n rev, f001 functional block diagram ( t y pical applications) figure2. f u nctional bl o ck diagram of EC50431S pin configuration sot - 23 - 3 pack age figure3. pin configuration of EC50431S (top view)
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 3 of 1 1 5d23n rev, f001 absolute maximum ratings ( n ote 1) p a r a m e t e r s y m bol v a l u e u n i t c a t h o d e v o l t a g e v ka 36 v c a t h o d e c u r r e n t r a n g e ( c o n t i n u o u s ) i ka - 1 0 ~+ 1 00 m a r e f e r e n c e i n p u t c u r r e n t i r e f 10 m a j u n c t i o n t e m p e r a t u r e t j + 1 5 0 s t o r a g e t e m p e r a t u r e r a n g e t s tg - 6 5 ~ + 1 5 0 p a ck a g e t h e r m a l i m p e d a n c e 214 /w p a ck a g e t h e r m a l i m p e d a n c e 405 /w p o w e r d i ss i p a t i o n , t a = 2 5 p d 0.309 w note 1 : stresses greater than th os e listed under " absolute maxim u m ratings" m a y cause permane n t damage to t h e device. these a r e stress ratings onl y , and functional operation of t h e device at these or a n y other co nd itions b e y ond th os e indicated under "rec o mm e n d ed o perating condi ti ons" is not impl i ed. e x po s ure to "absolu te ma x i m u m ratings" for e x tended p e riods m a y affect device reliability recommended operating conditions p a r a m e t er s y mbol m in m ax unit cathode voltage v ka v ref 36 v cathode cu rr ent i ka 1.0 100 m a
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 4 of 1 1 5d23n rev, f001 electrical characte r istics for e c 50431s operatin g c o nditio n s: t a =2 5 un l ess o therw i se sp ec ified. p a r a m et e r t e s t c i r c u i t s y m bol c ond i t i ons m i n t y p m a x un i t re f e r ence vo l ta g e 0 . 5% 4 v ref v ka = v re f , i ka =10 m a 2 . 48 3 2 . 500 2 . 5 07 v de vi a ti o n o f re f e r ence vo l ta g e o v e r - t e m pe r a t u r e 4 v ref v ka = v ref i k a = 10 m a _ 4 . 5 1 7 m v ra ti o o f cha n g e i n re f e r enc e v o l t ag e t o th e ch a ng e i n c at hod e vo lt age 5 v re f / v ka i k a = 1 0 m a v k a = 10 v t o v ref _ - 1 . 1 - 2 . 7 m v / v v k a = 10 v t o 36 v _ - 1.1 - 2 . 0 re f e r enc e cu rr ent 5 i r e f i k a = 1 0 m a , r 1= 1 0 k? , r 2 = _ 1 . 5 4 a de vi a ti o n o f re f e r ence cu r r en t o v e r fu l l t e m pe r a t u r e range 5 i r e f / t i k a = 1 0 m a , r1=10 k ? r 2 = _ 0 . 4 1 . 2 a mi n i m u m ca t hod e cu rr ent f o r regu l a t i o n 4 i k a (mi n ) v ka = v ref _ 0 . 45 1 . 0 ma o f f - s t a t e ca t hod e cu rr ent 6 i k a ( of f ) v ka =3 6 v , v re f =0 _ 0 . 0 5 1 . 0 a d y na m i c i m pedance 4 z ka v ka = v re f , i ka = 1 t o 100 m a , f Q 1 . 0khz _ 0 . 15 0 . 5 ?
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 5 of 1 1 5d23n rev, f001 electrical characte r istics (continued)
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 6 of 1 1 5d23n rev, f001 ordering i n formation for 36v pr o ducts marking information packa g e v ol t age t olera n ce part number marking production y ear / w e ek code green packa g e sot - 23 - 3 0.5% ec50 4 31s a n - b g 431s yyw w yy is the year of production. 0 9 means the pr o duct is manufactu r e d in y e ar of 20 0 9 . w w is the w ee k of producti on . 25 means the pr o duct is manufactu r e d in the 25 th w e e k. green package pac k age t e m p e r at u r e r a n g e vo lt age t o le r a n c e pa r t n um b er s o t - 23 - 3 - 40 to 85 0 . 50% ec50 4 31san - b g
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 7 of 1 1 5d23n rev, f001 t y pical performance characteristics t y pical performance characteristics figure 7 figure 8 figure 9 figure 10
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 8 of 1 1 5d23n rev, f001 t y pical performance characteristics (continued) figure 11 figure 12 figure 13 figure 14
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 9 of 1 1 5d23n rev, f001 t y pical applications
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 10 of 1 1 5d23n rev, f001 t y pical applications (continued)
EC50431S adjustable precision shu nt regulators e - cmos corp. ( ww w .ecmos.com.tw ) page 11 of 1 1 5d23n rev, f001 mechanical dimensions ou tline dimensions: sot - 23 - 3 dim e ns io ns dim n mm dim n mm min max min max a - 1.45 l 0.30 0.60 a1 - 0.15 l1 0.6 ref a2 0.9 1.30 l2 0.25bsc b 0.30 0.50 r 0.10 - c 0.08 0.22 r1 0.10 0.25 d 2.80 3.00 0 8 e 2.60 3.00 1 5 15 e1 1.50 1.70 e 0.95bsc e1 1.90bsc

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