wsh130 nl winson reserves the right to make changes to improve reliability or manufacturability. ? winson, 2017/4/7 p age 1 / 4 unipolar hall effect switch ic features: ? operates from 2.4v to 26v supply voltage with reverse voltage protection ? operates with magnetic fields from dc to 15khz ? on - chip hall sensor ? on - chip tempera ture compensation circuitry minimizes shifts in on and off points and hysteresis over temperature and supply voltage ? ideal sensor for speed measurement, revolution counting, positioning, and dc brushless motors ? on (l) with magnetic south pole and off(h) without magnetic field or with magnetic north pole functional description : wsh130nl is designed to integrate hall sensor with output driver together on the same chip, it is suitable for speed measurement, revolution counting, positioning. it includes a temperature compensated voltage regulator, a differential amplifier, a hysteresis controller and a open - collector output driver capable of sinking up to 20ma current load. an on - chip protection resistor is implemented to prevent reverse power fault. the t emperature - 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 output can keep switch ing on/off on more precise switch point regard less to the a mbient temperature . wsh130nl are rated for operation over temperature range from ?40? c to 125 ? c and voltage ranges from 2.4v to 26v. pin descriptions: name p/i/o pin# description v dd p 1 positive power supply gnd o 2 ground vout o 3 o utput pin absolute maximum rating (at ta=25 ? c)
wsh130 nl winson reserves the right to make changes to improve reliability or manufacturability. ? winson, 2017/4/7 p age 2 / 4 supply voltage vcc ----------------------- --- 26v magnetic flux density b -------------------------- unlimited reverse protection voltage vr -------------------------- 26v output on current (continuous) ic -------------------------- 25ma operating temperature range ta ------------------------- - ( - 40? c to +125 ? c) storage temperature range ts -------------------------- ( - 65? c to +150 ? c) package power dissipation pd -------------------------- 500mw electrical characteristics: (t=+25 ? c, vcc=2.4v to 26v) characteristic symbol test conditio ns min typ max units supply voltage vcc 2. 4 26 v output saturation voltage v out (sat) vcc=12v,ic=1 0 ma b > bop 0.2 0.6 v output leakage current ileakage vcc=12v , b wsh130 nl winson reserves the right to make changes to improve reliability or manufacturability. ? winson, 2017/4/7 p age 3 / 4 magnetic characteristics: characteristic symbol grade min. typ. max. unit operating point bop a + 50 gauss b +70 gauss c +150 gauss release point brp a +10 gauss b +10 gauss c +10 gauss hysteresis window bhys 1 0 3 0 gauss * + mean south magnetic field, 1mt=10 gauss
wsh130 nl winson reserves the right to make changes to improve reliability or manufacturability. ? winson, 2017/4/7 p age 4 / 4 package information: to - 92s: sot23:
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