WSH520 lo w v o lta ge sing le coil hall ef f ect ic with complementar y output driv er s f e a t u r e s : operate from 1.8v to 4.5v supply voltage. on-chip hall sensor . internal therm a l com p ensation circuit enable operation in a wide range tem p erature without loss of sensitivity . output sinking capability up to 200m a for driving lar g e load. a v ailable in rugged low profile sot - 25 packages. gener al description: w s h520 is designed to integrate hall sensor with com p lem e ntary output drivers on the sam e chip, it is suitable for single coil dc brushless m o tors. it includes a tem p erature com p ensated circuit, a dif f erential am plifier , a hysteresis controller , com p lem e ntary bi-direction drivers for sinking and driving lar g e current load. w s h520 are rated for operation over tem p erature range from ?20 ? c to 75 ? c and voltage ranges from 1.8v to 4.5v . pin descriptions: (so t -25) name p / i / o p i n # description v c c p 1 positive power supply vss p 2 ground do o 3 output pin #2 dob o 4 output pin #1 absolute maximum ra ting (a t t a =25 ? c) supply v o ltage vcc -------------------------- 5v magnetic flux density b -------------------------- unlim ited output on current (c ontinuous) ic -------------------------- 220m a operating t e m p erature range t a -------------------------- (-20 ? c to +75 ? c) s t orage t e m p erature range t s -------------------------- (-65 ? c to +150 ? c) package power dissipation pd -------------------------- 350m w for sot - 25 w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003
WSH520 electrical char acteristics: ( t = + 2 5 ? c, vcc=1.8v to 4.5v) characteristic s y m b o l t e st c o n d i t i o n s m i n t y p m a x u n i t s supply v o ltage vcc g3 ??3 g3 ?3 v output saturation v o ltage v out(sat) vdr i ve+vsink vcc=3v , io=150m a g3 ?3 ??3 v output leakage current ileakage vcc=3v , b < brp g3 < ?? ??3 ua supply current isupply vcc=3v , io=150m a g3 ??3 ??3 ma function bloc k: w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003
WSH520 ma gnetic char acteristics: c h a r a c t e r i s t i c s s y m b o l quantity ta = - 2 0 ? c to +80 ? c min t yp. max unit operate point bop grade a grade b 3 5 7 0 5 0 1 0 0 gauss release point brp grade a grade b - 7 0 - 3 5 -100 -50 gauss hysteresis w i ndow bop-brp 7 0 1 5 0 g a u s s or dering inf o r m a t ion: sot - 25: w s h520-xpd e l e c . g r a d e sot - 25: 1 : a g r a d e ( 7 0 g a u s s ) 2 : b grade (100 gauss) t e st cir cuit: w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003
WSH520 1. sot - 25: p a c k a ge inf o r m a t ion: 1. sot - 25 w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003
WSH520 a pplica t ion cir cuit: 1-1. sot - 25 w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003
WSH520 w i n s o n reserv es th e rig h t to m a k e ch an g e s to im p r o v e reliab ility o r m a n u f actu r ab ility . ?w i n son, apri l . 2003 figur e 1. 1-2. sot - 25 333333333333333333333333333333333333333333333333333333333333333 333333333333 3 figur e 2. iv -curve ? 3 3 a? ? 3 ?? ? ? ?? ? ?? ? ?? ? ? ? a ?? 3 ? ?? ? ? 3
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