wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. hall effect ic with two-step lock protection and auto-restart function features: operate from 2.8v to 20v supply voltage. on-chip hall sensor. internal bandgap regulator allows temperature compensated operations and a wide operating voltage range. high output sinking capability up to 600ma for driving large load. available in rugged low profile sot-25 , sip-4l packages. built-in protection diode for reverse power supply fault. built-in 2-step lockprotection and auto-restart function. general description: wsh610 is designed to integrate hall sensor with complementary output drivers and 2-step thermal protection circuit together on the same chip. it is carefully designed to protect dc brushless motors to operate on different fault operating condition. wsh610 can detect whether motor is in locked or operating condition then trigger the low or high temperature protection to protect motor under safety operating zone. this technique allows motors to operate as high temperature as 125 c and keep motor under 80 c low temperature when motor is locked.and all above protection will be disabled when fault condition is removed and motor will be auto-restarted. wsh610 includes two open collector output drivers, each capable of sinking 600ma current load. an on-chip protection diode is implemented to prevent reverse power fault. its 2-step protection can replace traditional lock protection and auto restart function but without emi noise and any external components with much lower cost. the temperature-dependent bias increases the supply voltage of the hall plates and adjusts the switching points to the balance the influence of magnets at higher temperatures.wsh610 are rated for operation on wide temperature range from C 20 ? c to 125 ? c and voltage ranges from 2.8v to 20v. ? winson,2006/3/13 1
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. name p/i/o pin# description vdd p positive power supply vss p ground none o no fuction out2 o output pin 2 out1 o output pin 1 name p/i/o pin# description vcc p positive power supply out1 o output pin #1 out2 o output pin #2 vss p ground supplyvoltage vcc -------------------------- 20v output / fg breakdown voltagevout/vfg --------------------- 25v magnetic flux density b -------------------------- unlimited reverse protection voltage vr -------------------------- 20v outputcurrent continuous ic-------------------------- 450ma lockcurrent ih ------------------------ 600ma peak current ip ------------------------- 800ma operating temperaturerange ta -------------------------- (-20 ? c to +100 ? c) storage temperaturerange ts -------------------------- (-65 ? c to +150 ? c) package power dissipation pd-------------------------- 350mwforsot-25 500mwforsip-4l (t=+25 ? c,vcc=2.8v to 20v) characteristic symboltest conditions min typmaxunits supply voltage vcc v output saturation voltage vout(sat)vcc=12v,ic=200ma b > bop v output leakage current ileakagevcc=12v, b < brp < ua supply current isupplyvcc=20v, output & ma ? winson,2006/3/13 2
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. characteristics symbolquantity ta= -20 ? c to +100 ? c min typ. max unit operate point bop grade a grade b grade c 25 50 30 70 50 120 gauss release point brp grade a grade b grade c -50 -25 -70 -30 -120 -50 gauss hysteresis window bop-brp 50 200gauss ? winson,2006/3/13 3
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. operating current sip- 4l: wsh610-xpa n elec.grade 1: a grade (50 gauss) sot-25: wsh610-xpd n 2 : b grade (70 gauss) 3 : c grade (120 gauss) elec.grade n: non-lead process ? winson,2006/3/13 4
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. sip-4l sot-25 ? winson,2006/3/13 5
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. sot-25 ? winson,2006/3/13 6
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. sip-4l ? winson,2006/3/13 7
wsh610 winson reserves theright tomake changesto improve reliability or manufacturability. sot-25 figure 1. sip-4l figure 2. ? winson,2006/3/13 8
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