WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. hall effect sensor ic with thermal lock protection and auto restart function features: operate from 2.8v to 36v 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 500mafor driving large load. lower current change rate reduces the peak output voltages during switching. available in rugged low profile sot-25 , sip-4l packages. built-in pwm speed control function . built-in protection diode for reverse power supply fault. built-in thermal lock protection and auto-restart function. general description: WSH413 is designed to integrate hall sensor with complementary output drivers and frequency generator together on the same chip, it is suitable for speed measurement, revolution counting, positioning, and dc brushless motors. it includes a temperature compensated voltage regulator, a differentialamplifier, a hysteresis controller, two darlington output drivers capable of sinking 500ma current load and an pwm signal input pin capable of doing speed control. an on-chip protection diode is implemented to prevent reverse power fault. and built-in thermal 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. thepower will be shutdown automatically at 125 c to prevent the coils be damaged and auto-restart after cooling down 5~10 c when thermal protected was activated . the temperature-dependent bias increases the supply voltage of the hall plates and adjusts the switching points to the decreasing induction of magnets at higher temperatures. subsequently, the open collector output switches to the appropriate state. WSH413 are rated for operation over temperature range from C 20 ? c to 100 ? c and voltage ranges from 2.8v to 36v. ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. name p/i/o pin# description vdd p positive power supply vss p ground ps i pwm input pin 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 -------------------------- 36v output / fg breakdown voltagevout/vfg --------------------- 46v magnetic flux density b -------------------------- unlimited reverse protection voltage vr -------------------------- 36v outputcurrent continuous ic-------------------------- 350ma hold current ih ------------------------- 500ma peak current ip ------------------------- 1.0a 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 36v) characteristic symboltest conditions min typmaxunits supply voltage vcc v output saturation voltage vout(sat)vcc=24v,ic=200ma b > bop v output leakage current ileakagevcc=24v, b < brp < ua supply current isupplyvcc=24v, output & fg open ma output / fg rising time tr vcc=12v, rl=820 cl=20pf 3.0 us output / fg falling time tf vcc=12v, rl=820 cl=20pf us ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 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 -70 -25 -100 -30 -120 -50 gauss hysteresis window bop-brp 40 200gauss sip- 4l: WSH413-xpa n elec.grade sip-4l: sot-25: WSH413-xpd n 1: a grade (50 gauss) 2 : b grade (70 gauss) 3 : c grade (120 gauss) elec.grade sot-25: n: non-lead process 1 :a grade (50 gauss) 2: b grade (70 gauss) ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. sip-4l sot25 ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. sot-25 ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. sip-4l ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
WSH413 winson reserves theright tomake changesto improve reliability or manufacturability. sot-25 figure 1. sip-4l figure 2. put additional resistor between power line and pin 1 of WSH413 can greatly incerease the surge voltage protection ability of system. ? winson, 2005/10/31 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
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