november 2003 1/9 ? VB325SP high voltage ignition coil driver power i.c. n pri m ary co i l vo l t ag e i n t e rna l l y s e t n co i l c urrent l i m i t i n t e r n al l y set n logic le v e l c o mp a t ib le in p u t n dri vi ng cur rent q u asi pro p o r t i o n a l t o co l l e ct o r cur rent n si ng l e f l a g - o n co i l curre nt n l o w vo l t a g e cl am p t h e r m a l shu t do wn descr i p t i o n t he v b 325 s p i s a hi gh v ol t ag e po w e r i nte grat ed ci r cui t m ade us i ng the s t m i cr oel ec tr oni cs v i p ow er ? m 1-3 tec h nol ogy , w i t h v er t i cal c urre nt f l o w pow er dar l i n gton and l ogi c l ev e l compa t i bl e d r i vi ng ci r cui t. t he enab l e pi n al l o w s to ex ter nal l y b l oc k t he s w i t ch w h e n the i nput i s on. b u i l t - i n p r ote cti on c i rc u i t for c o i l c u r r ent l i m i ti ng a n d co l l e ctor vol t age c l amp i ng a l l o w s the dev i ce to be u sed as s m a r t, hi gh v ol t a ge, hi gh c u rre nt i nterf ac e i n a d va n ce d e l e ctr o n i c ig n i tio n syste m . if t h e in p u t si g nal fr om th e mi cr o happ ens to rema i n hi gh, the dev i ce pr otec ts i t se l f ag ai ns t ov er -hea ti ng by forc i ng c o l l ec t or c urr ent to s m oo th dec r eas e (l ow vol t age c l amp fe ature ) and no und es i dere d s p ark oc curs ( see fi g ure 4 ) . ty pe v cl i cl i cc v b 32 5sp 3 80 v 10 a 1 50m a block diagram powerso-10 ? 1 10 driver gnd reference r sense v cc hv c v in quasi prop. base current - t h er mal pr otection bd e di a g no s t i c outp u t v cc v r v f1 v li m v th sn limiter lgnd http://
2/9 VB325SP abs o l ut e m a xi m u m r a t i ng th e r ma l d a t a pi n f unct i o n (*) when grounded the input is enabled connection diagram (top view) s y mb o l p a r a me t e r v a l u e un i t hv c co l l e c t o r vo l t a ge ( i nt er na l l y l i m i t e d ) - 0 . 3 t o v cl a m p v i c co l l e c t o r cu r r en t ( i nt er na l l y l i m i t e d ) 1 0 a i c ( gn d) dc c u r r ent on e m i t t e r po wer 10 . 5 a v cc dr i v i n g st ag e su pp l y vol t ag e - 0 . 3 t o 7 v i s dr i v i n g ci r c ui t r y su ppl y c ur r ent 20 0 m a i s( gn d) dc c u r r ent on g r o u n d pi n 1a v in i n pu t v ol t a ge - 0. 3 t o v cc + 0. 3 v i in ma x i mu m i n p u t cu r r e n t 1 0 0 m a f in lo gi c i np u t f r e qu en c y i n o p er at i v e m o de d c t o 15 0 h z v ou t ( f l a g ) o u t put vo l t ag e pr i m ar y th r e sh ol d cu r r e n t l e v e l - 0 . 3 t o v cc + 0. 3 v i out ( f l a g ) fl ag o ut pu t cu rr en t 1 00 m a p ma x p o we r di s s i p a t i o n ( t c =25 c ) 12 5 w e s/ b s e l f cl a m pe d ene r g y d u r i n g o u t p ut pow e r c l a m pi ng ( s ee f i gur e 2 ) 27 5 m j v es d e s d vo l t a ge ( h v c pi n ) 4k v v es d es d v ol t ag e (e na b l e pi n) + 1. 5 ; -2 kv v es d e s d vo l t a ge ( o t h e r pi n s ) 2k v i bd in p u t d a rli n g to n b a s e cu r r e n t 1 5 0 m a v bd i n p u t dar l i n gt on bas e vo l t a g e i n t er nal l y l i m i t e d v t j o p er at i ng j un c t i on t em p er at ur e - 40 t o 1 50 c t st g st or ag e t e m p e r a t ur e r a ng e - 5 5 t o 15 0 c v e m a xi m u m e na bl e vo l t ag e - 0. 3 t o 5. 5 v i e ma x i mu m e n a b l e cu r r e n t 15 0 m a sym b ol pa r a m e t e r v al ue un i t r t h j - ca se t h e r m a l r e s i st an ce j u n c t i on - c as e ( m ax) 1 c/ w r th j - a m b t h e r m a l re s i s ta n c e ju n c tio n - a m b ie n t (m a x ) 5 1 c /w no na m e fu nct i on 1 - 5 l g n d s i g na l g r ou nd 2 - 3 - 4 g n d e m itt e r p o w e r g r o u n d 6e e n a b l e ( * ) 7v cc lo gi c su pp l y v ol t ag e 8 b d b as e da r l i n g t o n 9 i n p u t l o g ic in p u t c h a n n e l ( i n t e r n a l p u ll d o w n ) 10 fl ag di ag nos t i c o u t p u t si g n a l ( o pe n em i t t e r ) ta b h v c pr i m ar y coi l o u t p u t d r i v e r ( o pe n co l l e c t o r ) 1 2 3 4 5 6 7 8 9 10 tab lgnd gnd gnd gnd lgnd e v cc bd input flag hv c p in 1 an d p in 5 m u s t be ex t er n ally co nne ct e d t o pi ns 2 ? 4.
3/9 VB325SP el ect r i cal ch aract eri s t i cs (5 . 3 v < v ba t < 24 v; v cc =5 v 10 % ; -4 0 o c < t j < 12 5o c; r co i l =58 0m w; l co i l =3. 7 5m h u nl es s ot he r w i s e s pec i f i e d; s ee n ot e 1) note 1: paramet r ic deg r at at ion a r e all owe d wit h 5. 3< v b < 1 0v an d v b >24 v . not e 2: t h e pr im a ry c o il cur re nt v a lue i cl mu st be me as ur e d 1m s af t e r d es atur a t i on of t h e power s t a ge. not e 3: no in t e rnal pu ll- d own . not e 4: if en able pin i s f lo ating o ut= o f f f or eve ry i npu t s t atus . (*) i n t e rnally lim i t e d s y m b ol par a m e t e r t es t co ndi t i o ns m i n ty p m ax uni t v cl h i g h v ol t ag e c l am p i co i l =6 . 5 a 3 20 38 0 4 20 v v lc l low v o l t age cl am p i co i l =6 . 5 a; t j =t sd 3 0 40 50 v v ce ( sa t ) p o w e r st ag e sa t u ra t i o n vol t ag e i c =6 a; v in =4 v 1. 5 2 v i c c ( st d b y) st and - b y su pp l y cur r ent i n = o f f 11 m a i cc dc lo gi c cu r r en t v b =1 6v ; i c =6 . 5 a; f = 1 0 0 h z; lo ad = co i l ; v cc =5 . 5 v 40 m a i c c ( pe ak ) p e ak d c lo g i c c u rr en t d u r i n g o n p h as e i c = 6. 5 a 1 00 15 0 m a v cc dc lo gi c vo l t a g e 4 . 5 5 . 5 v i cl coi l c u r r e n t li m i t - 40 o c < t j < 12 5o c ( s ee n o t e 2 ) 9 1 1 a i c( o ff) o u tp u t o ff s ta te cu rre n t in= o f f; v hv c =2 4v; v cc =5 v; t j =25 o c 5 m a v inh hi gh l e ve l i n put vo l t ag e v cc =4 . 5 v 4 v cc v v inl low l e v e l i n pu t vo l t a g e v cc = 5 .5 v - 0 .3 0 .8 v v i n ( h yst ) i n pu t th r e sh ol d hy st er es i s 0 . 4 v i inh hi gh l e ve l i n put cur r e n t v in =4 v 1 0 0 m a i inl low l e v e l i n pu t cu r r en t v in =0 . 8 v 0 3 0 m a i inp d in p u t a c ti v e p u ll do w n v in =4 v 1 0 1 0 0 m a v d i agh hi gh l e ve l f l a g o u t p ut vol t ag e r ext =2 2k w; c ex t = 1nf ( s e e no t e 3) v cc - 1 v cc v v di a gl low l ev el fl ag o u t put vol t ag e r ext =2 2k w; c ex t = 1nf ( s e e no t e 3) 0 . 5 v i di ag t h c o il c u rr e n t l e v e l thr e s h o l d t j =2 5o c 4. 25 4. 5 4 . 75 a i di ag t d c o il c u rr e n t l e v e l thr e s h o l d dr i f t (s ee f i gure 1 ) i di a g hi gh l e ve l f l a g o u t p ut cur r ent i c > i di a gt h ; v di ag =3 v 0 . 5 m a i di a g( l ea k) lea ka ge c ur r e nt on fl a g ou t p u t v in =l ow ; v cc =5 . 5v 10 m a v f a n t i p ar al l el d i od e fo rw a r d vol t ag e i c = - 1a 2 v e s/ b s i n g l e pu l s e a v al an ch e e n er gy l =6m h; i c = 8a 1 8 0 m j t on t u rn -o n t i m e r c =0 . 5 w ; l c =3 . 75mh; t j =2 5o c; v ba t = 13 v ( s ee f i gur e 6 ) 15 m s t of f t u rn -o ff t i m e r c =0 . 5 w ; l c =3 . 7 5m h ; i c =6 . 5 a; t j = 25o c; v ba t = 13 v ( s ee f i gur e 6 ) 15 25 m s t sd t h er m a l sh ut -do w n in te r v e n t io n 15 0 o c v eh h i g h le v e l en ab l e v o l t ag e v in =v inh ; o u t = o f f (s e e n o te 4 ) 2 v v el l o w l e v e l e n a b le v o lt a g e v ou t fre e to fo llo w v in 0. 4 0 v
4/9 vb 325sp el ect r i cal ch aract eri s t i cs (c on ti nued) s y m b ol p a r a m e t e r te s t c ond i t i ons m i n t yp m a x u n i t i eh hi gh l e ve l e n a b l e cu r r en t v e =5v 500 m a i el low l e v e l ena b l e cu r r en t v e <0. 4 v - 200 m a v bd ( o f f ) b a se da r l i n gt on v o l t ag e o f f v e =v eh 1v v bd ( o n ) b a se da r l i n gt on v o l t ag e o n v in =v inh ; v e =v el ; i c = 6 .5 a 1 .8 v p r i nci ple o f oper ati o n t he v b 325s p i s mai n l y i ntend ed as a hi gh v ol t age p ow e r swi t c h dev i c e dri v en by a l ogi c l e v el i npu t a nd i nter f ac es d i rec t l y to a hi gh e nerg y el ec tro ni c ig n i t i o n co il. t he i npu t v in o f the v b 3 25s p i s fed from a l ow p ow er s i gna l gener ated b y an ex te rnal c on t rol l er th at dete rmi nes b oth dw el l ti me an d i g ni ti on poi nt . d ur i ng v i n hi gh ( 3 4v ) t he v b 3 25s p i n cr eas e s cur r e nt i n t h e c o i l t o t h e de si r e d, i nt e r n al l y s et cu r r e n t le ve l. a fter re ac hi ng thi s l ev el , the coi l c urr ent r ema i n s co ns tant unti l th e i gni ti on poi nt, that co rr es pond s to the t r ans i t i o n of v i n fr om hi g h to l o w (ty p . 1 . 9v th r e sh o l d ) . d u r i ng the coi l curre nt sw i t ch-o ff, the p r i m ar y vo l t age h v c i s cl am ped at an i ntern al l y set val ue v cl , ty p i ca l l y 38 0v . t he tra n si ti on from s a tura ti on to de satura ti on, c o i l c u rren t l i m i t i ng p has e, m us t hav e t he ab i l i t y t o ac com odate an o verv ol t a ge. a m a xi mum ov er shoot of 20v i s al l o w e d . f e e dback w h en th e c o l l e ct o r c u r r ent ex ceed s 4.5a , t h e feedb ac k s i gn al i s turne d h i gh a nd i t re mai ns so, unti l the input v o l t age is turn ed-o ff. o v ervo l t a g e the v b 32 5s p c an w i t hs tand the f ol l ow i ng tran si e n ts of the b a tter y l i n e : - 1 0 0 v / 2 m se c( r i =10 w ) +100 v / 0.2ms e c (r i =1 0 w ) +50v /4 00ms ec (r i = 4 . 2 w , with v in = 3v ) fi gu r e 1 : fl ag c ur r e nt vs. t em p er at ur e fi gu r e 2 : singl e pu l s e av al a nch e en er gy cap ab i l i t y 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 0 1 02 0 3 04 05 0 6 07 08 0 9 0 1 0 0 1 1 0 l ( m h ) e ( m j ) tc = 2 5 o c tc=150o
5/9 VB325SP fi g u r e 3: s el f c l a m ped induc t i v e s w i t c hi ng cu r r e n t v s . t im e figur e 5 : t y pi c al app l i c a ti on di a gram fi g u r e 4: low v ol t a ge c l am p feat ure m p 1nf 18k v cc hv c gnd fl a g v bat 1 m f 100n f e lg nd v in +5v bd 1k 1k 1k e n a b l e p i n c an b e al ter nati vel y c o nnec t ed to lgn d 0 2 4 6 8 10 2 0 0 3 00 40 0 500 6 00 70 0 800 9 00 1 000 t im e in c la m p ( s e c ) i nduc t i v e c u r r en t ( a ) t= 2 5 o t = 15 0o
6/9 VB325SP figure 6: switching time for inductive load t t v ge n v cc 3v v ba t t on t off 100v r gen v gen d.u.t c e v ba t
7/9 VB325SP dim. mm. i n c h min. ty p m ax . m i n. t y p . m ax . a 3 .3 5 3 .6 5 0 .1 3 2 0 .1 4 4 a (* ) 3 . 4 3. 6 0 . 1 34 0 . 1 4 2 a1 0. 00 0 . 10 0. 00 0 0. 00 4 b 0 .4 0 0 .6 0 0 .0 1 6 0 .0 2 4 b (* ) 0 .3 7 0 .5 3 0 .0 1 4 0 . 0 2 1 c 0 .3 5 0 .5 5 0 .0 1 3 0 .0 2 2 c (* ) 0 .2 3 0 .3 2 0 .0 0 9 0 . 0 1 2 6 d 9 .4 0 9 .6 0 0 .3 7 0 0 .3 7 8 d1 7. 40 7 . 60 0. 29 1 0 . 3 0 0 e 9 .3 0 9 .5 0 0 .3 6 6 0 .3 7 4 e2 7. 20 7 . 60 0. 28 3 3 00 e 2 ( * ) 7 .3 0 7 .5 0 0 .2 8 7 0 .2 9 5 e4 5. 90 6 . 10 0. 23 2 0. 24 0 e 4 ( * ) 5 .9 0 6 .3 0 0 .2 3 2 0 .2 4 8 e 1 .2 7 0 .0 5 0 f 1 .2 5 1 .3 5 0 .0 4 9 0 .0 5 3 f (* ) 1 .2 0 1 .4 0 0 .0 4 7 0 . 0 5 5 h 1 3. 80 1 4. 40 0 . 5 43 0 . 5 67 h (* ) 1 3. 85 1 4 . 3 5 0 . 5 45 0 . 5 6 5 h 0 .5 0 0 .0 0 2 l 1 .2 0 1 .8 0 0 .0 4 7 0 .0 7 0 l (* ) 0 .8 0 1 .1 0 0 .0 3 1 0 . 0 4 3 a 0o 8o 0o 8o a (* ) 2 o 8 o 2 o 8 o p o wer s o-10 ? m e cha ni c al dat a (* ) mu ar only poa p013p detail " a " pl a n e se a t i n g a l a1 f a1 h a d d1 = = = = e4 0. 1 0 a c a b b de t a i l " a " se a t i n g pl an e e2 10 1 eb he 0.25 p095a
8/9 VB325SP p o we r s o- 1 0 ? su g g e s t e d pad l a y o u t 1 tape and reel shipment (suffix 13tr) reel dimensions a ll d im e n s io n s a r e in m m . bas e q. t y 60 0 bul k q. t y 60 0 a ( m a x ) 33 0 b ( m i n ) 1. 5 c ( 0. 2) 13 f 20. 2 g (+ 2 / - 0 ) 24. 4 n ( m i n ) 60 t ( m ax) 30. 4 t a p e di m e nsi o n s ac co rd i n g t o el ec t r o ni c i nd us t r i es a s so ci a t i o n ( e i a ) st an da r d 4 8 1 r e v . a , fe b 19 86 a l l di m e ns i o ns a r e i n m m . ta p e w i dt h w 24 t a pe hol e sp aci n g p 0 ( 0 . 1) 4 co m po nen t sp ac i n g p 24 h o l e di a m et er d ( 0. 1/ - 0 ) 1. 5 ho l e di ame t e r d1 ( m i n ) 1. 5 h o le p o s i tio n f ( 0 .0 5 ) 11 . 5 co m pa r t m en t de pt h k ( m ax) 6. 5 h o le s p a c in g p 1 ( 0 . 1 ) 2 to p co ve r t ape en d start no co mpon ent s n o c ompone nts c o m p onen ts 500mm mi n 50 0mm mi n e m p t y c ompone nts poc k e ts s a l e d w i th c o v e r t ape. u s er d i r e c t i on of fee d 6.30 10. 8 - 1 1 14. 6 - 14. 9 9. 5 1 2 3 4 5 1.27 0.67 - 0 . 7 3 0. 54 - 0 . 6 10 9 8 7 6 b a c all di m ens i ons ar e i n mm. b a s e q.ty b ul k q.t y tube lengt h ( 0. 5) a b c ( 0 . 1 ) c a s a bla nca 5 0 10 00 53 2 1 0.4 1 6.4 0.8 mu a r 5 0 10 00 53 2 4.9 1 7.2 0.8 tu b e s h ip me n t (no suffix) c a b muar casablanca
9/9 VB325SP i n f o r m at ion f ur n is h ed is be lie v ed t o be a c c ur a t e a nd r el iab le. ho wev e r , s t m i c r oel ec t r oni c s as s um e s n o r es p ons i bil it y f or t he c o n s eq uen c es of use of such in f o r m at ion n or f o r a ny inf r in gem e nt o f p at en t s o r o t h er r ig ht s of t hi r d p ar t ies wh ic h m ay r es u lt s f r om it s us e. no l ic en s e is gr an t e d by i m pli c a t ion o r o t h er wi s e u nde r a ny p a t e nt or p atent r igh t s of s t mi croelec t ronics. s pe cific atio ns m ent io ned in t hi s p u blication a re subjec t t o c han ge w ithou t n otic e. t his p ublic atio n sup er sed es an d rep lac e s all infor ma t i on p rev io us ly s u pplied . s t mi croelec t ron i cs prod uc t s a re no t au t h o ri ze d f o r u se as crit i ca l co mp o n e n t s in l i f e sup p o rt d e vi ce s o r syst e ms w i t h o u t exp r e ss wri t t e n ap p ro va l of st mi cr o e l e ct ro n i cs. t he st log o is a t ra dem a rk o f s t mic ro ele ct ro nic s ? 2 0 0 3 st mi cro e l e ct ro n i cs - pri n t e d in i t al y - all r i g h t s r e se rve d . st mi cro e l e ct ro n i cs g r o u p o f c o mp an i es aus t ralia - bra zil - can ada - ch ina - f inland - f ranc e - g er man y - ho ng k on g - i nd ia - i sra el - i t aly - j ap an - m ala ysia - ma l t a - mo ro cco - sin g a p o re - sp a i n - sw e d e n - sw i t ze rl a n d - un i t e d kin g d o m - u. s. a. h ttp :/ / w w w . s t. c o m 1
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