wsh130 winson reserves the right to make changes to improve reliability or manufacturability. ?winson, 2013/5/23 hall effect switch ic features: z operates from 2.4v to 26v supply volta ge with reverse voltage protection z operates with magnetic fields from dc to 15khz z on-chip hall sensor z on-chip temperature compensation circuitr y minimizes shifts in on and off points and hysteresis over temperature and supply voltage z ideal sensor for speed measurement, revolution counting, positioning, and dc brushless motors z on(l) with magnetic south pole and off (h) with north pole functional description : wsh130 is designed to integrate hall sensor with output driver together on the same chip, it is suitable for speed measuremen t, revolution counting, positioning, and dc brushless motors. it includes a temper ature compensated voltage regulator, a differential amplifier, a hysteresis controller and a open-collector output driver capable of sinking up to 20ma current lo ad. an on-chip protection resistor is implemented to prevent reverse power fault. the temperature-dependent bias increases the supply voltage of the hall plates and adjusts the switching points to the decr easing induction of ma gnets at higher temperatures. subsequently, the output can keep switching on/off on more precise switch point regardless to the ambient temperature. wsh130 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 vdd p 1 positive power supply gnd o 2 ground vout o 3 output pin absolute maximum rating (at ta=25 ? c) supply voltage vcc --- --------------- -------- 26v output breakdown voltage vout (breakdown) ------------- --- 30v
wsh130 winson reserves the right to make changes to improve reliability or manufacturability. ?winson, 2013/5/23 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 conditions min t y p max units supply voltage vcc 2.4 26 v output saturation voltage vout (sat) vcc=12v,ic=10ma b > bop 0.2 0.6 v output leakage current ileakage vcc=12v, b wsh130 winson reserves the right to make changes to improve reliability or manufacturability. ?winson, 2013/5/23 magnetic characteristics: characteristic symbol grade min. typ. max. unit operating point bop a +5 + 30 + 50 gauss b + 50 + 70 gauss c +120 gauss release point brp a -50 - 30 -5 gauss b -70 -50 gauss c -120 gauss hysteresis window bhys 60 100 gauss * + mean south magnetic field, 1mt=10 gauss ordering information:
wsh130 winson reserves the right to make changes to improve reliability or manufacturability. ?winson, 2013/5/23 package information: to-92s: sot23:
wsh130 winson reserves the right to make changes to improve reliability or manufacturability. ?winson, 2013/5/23 application circuit: fan application: magnetic detector:
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