WSH412 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 . hall ef f ect sensor ic with t her mal loc k pr otection and a uto r e star t function f e a t u r e s : operate from 2.8v to 20v supply voltage. on-chip hall sensor . internal bandgap regulator allows tem p erature com p ensated operations and a wide operating voltage range. high output sinking capability up to 600m a for driving lar g e load. lower current change rate reduces the peak output voltages during switching. a v ailable in rugged low profile sot - 25 , sip-4l packages. built-in fg output. built-in protection diode for reverse power supply fault. built-in therm a l lock protection and auto-restart function. gener al description: w s h412 is designed to integrate hall sensor with com p lem e ntary output drivers and frequency generator together on the sam e chip, it is suitable for speed m easurem ent, revolution counting, positioning, and dc brushless m o tors. it includes a tem p erature com p ensated voltage regulator , a dif f erential am plifier , a hysteresis controller , two open-collector output drivers capable of sinking 600m a current load and an open-collector frequency generator capable of sinking 10m a current load. an on-chip protection diode is im plem ented to prevent reverse power f a ult. and built-in therm a l lock protection and auto-restart function is suitable for super high speed fan. it can replace the function of lock protection and auto restart function. the power will be shutdown autom a tically at 130c to prevent the coils be dam a ged and atuo-restart after cooling down. the tem p erature-dependent bias increases the supply voltage of the hall plates and adjusts the switching points to the decreasing induction of m a gnets at higher tem p eratures. subsequently , the open collector o u tput switch e s to the app r opria te sta t e. w s h412 are rated for operation over tem p erature range from ?20 ? c to 100 ? c and voltage ranges from 2.8v to 20v . ?w i n son, 2005/ 2/ 2 1 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . pin descriptions: so t - 25 name p / i / o p i n # description v d d p 1 positive power supply v s s p 2 ground f g o 3 frequency generator o u t 2 o 4 output pin 2 o u t 1 o 5 output pin 1 pin descriptions: sip-4l name p / i / o p i n # description v c c p 1 positive power supply o u t 1 o 2 output pin #1 o u t 2 o 3 output pin #2 v s s p 4 ground pin descriptions: sip-5l name p / i / o p i n # description v c c p 1 positive power supply o u t 1 o 2 output pin #1 o u t 2 o 3 output pin #2 f g o 4 frequency generator v s s p 5 ground absolute maximum ra ting (a t t a =25 ? c) supply v o ltage vcc -------------------------- 20v output / fg breakdown v o ltage v out/vfg --------------------- 25v magnetic flux density b -------------------------- unlim ited reverse protection v o ltage v r -------------------------- 20v output current con tinuous ic -------------------------- 500m a hold current ih ------------------------ 600m a peak current ip ------------------------- 800m a fg on current (continuous) if -------------------------- 20m a operating t e m p erature range t a -------------------------- (-20 ? c to +100 ? 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 500m w for sip-4l s i p - 5 l ?w i n son, 2005/ 2/ 2 2 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . electrical char acteristics: ( t = + 2 5 ? c, vcc=2.8v to 20v) 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 2.8 20 v output saturation v o ltage v o u t ( s a t ) v c c = 2 0 v , ic=200m a b > bop 0.15 0.4 v fg saturation v o ltage v f g ( s a t ) v c c = 2 0 v , if=10m a b > bop 0.15 0.4 v output leakage current ileakage vcc=20v , b < brp < 0.1 10 ua supply current isupply vcc=20v , output & fg open 20 30 ma output / fg rising ti m e tr vcc=12v , rl=820 cl=20pf 3.0 10 us output / fg falling ti m e tf vcc=12v , rl=820 cl=20pf 0.3 1.5 us output / fg t i m e dif f erential t vcc=12v , rl=820 cl=20pf 0.3 3 us function bloc k: 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 +100 ? c min t yp. max unit operate point bop grade a grade b grade c 2 5 5 0 30 70 50 120 gauss release point brp grade a grade b grade c - 5 0 - 2 5 - 7 0 - 3 0 -120 -50 gauss hysteresis w i ndow bop-brp 4 0 2 0 0 g a u s s ?w i n son, 2005/ 2/ 2 3 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 w i n s o n ?w i n son, 2005/ 2/ 2 4 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 . oper a t ing cur r ent vs. t her mal pr otection temper a t ur e oper at i n g curr ent v. s te mp e r a t u r e 0 25 50 75 100 125 150 250ma 300ma 350ma 400ma 450ma 500ma 550ma 600ma ?? or dering inf o r m a t ion: sip- 4l: w s h412-xp a n e l e c . g r a d e s i p - 4 l sot - 25: w s h412-xpd n 1: a grade (50 gauss) 2 : b grade (70 gauss) 3 : c grade (120 gauss) e l e c . g r a d e s o t - 2 5 : n : non-lead process 1 : a grade (50 gauss) 2: b grade (70 gauss) www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . t e st cir cuit: sip-4l sot - 25 ?w i n son, 2005/ 2/ 2 5 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . p a c k a ge inf o r m a t ion: sot - 25 ?w i n son, 2005/ 2/ 2 6 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . WSH412 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, 2005/ 2/ 2 7 sip-4l sip-4l ?w i n son, 2005/ 2/ 2 7 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH412 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 . a pplica t ion cir cuit: sot - 25 figur e 1. sip-4l figur e 2. ?w i n son, 2005/ 2/ 2 8 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
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