bipolar hall effect position sensor 2007-1-24 1/5 FSH41 ? general description the FSH41 is an integrated hall effect latched sensor designed for electronic commutation of brush-less dc motor applications. the device includes an on-chip hall voltage generator for magnetic sensing, a comparator that amplifiers the hall voltage, and a schmitt to provide switchi ng hysteresis for noise rejection, and open-collector output. an internal bandgap regulator is used to provide temperat ure compensated supply voltage for internal circuits and allows a wide operating supply range. a north pole of sufficient strength will turn the output on. in the absence of a magnetic field, the output is off. ? features z wide operating voltage range: 3.0v~20v z maximum output sink current 50ma z package: sip3 ? pin configuration ( top view) ? functional block diagram ? absolute maximum ratings vcc pin voltage 20v output off voltage,vce 30v output on current(io) (continuous current) 50ma power dissipation (ta=25 ) 400mw operating temperature range -40 ~+150 storage temperature range -65 ~+150 junction temperature +150 lead temperature(soldering,10 sec) +230 name no. status description vcc 1 p ic power supply gnd 2 p ic ground output 3 o it is low state during the n magnetic field 1 3 2 vcc gnd output sensor regulator vcc output gnd 1 3 2 hall
bipolar hall effect position sensor 2007-1-24 2/5 FSH41 ? dc electrical characteristics parameter symbol test conditions min. typ. max. unit minimum operating voltage vcc no use pin is open(fig1) 3.0 v maximum operating voltage vcc no use pin is open(fig1) 20.0 v quiescent supply current icc no use pin is open vcc:3.0v~20v(fig1) 3.7 10 ma output saturation voltage v sat vcc=12v,io=50ma(fig1) 400 500 mv note: fig1 the ic output state is under n magnetic field. ? output saturation voltage vs. output current (io) vcc=12v, temp. =25 output current (io) unit: ma saturation voltage unit: v note 5 0.05 15 0.13 25 0.19 35 0.27 45 0.35 50 0.40 ? ac electrical characteristics parameter symbol test conditions min. typ. max. unit rise time (t r ) rl=820 ? cl=20pf(fig1) 0.2 s fall time (t f ) rl=820 ? cl=20pf(fig1) 0.5 s ? magnetic characteristics FSH41 ta=-40 ~ +150 parameter min. max. unit bop +70 g brp -70 g bhys 140 g magnetic flux density 0 n s vsat brp bop bh l h vd vcc vout s mark n
bipolar hall effect position sensor 2007-1-24 3/5 FSH41 ? test circuits fig1 ? typical application circuit feedback"c" 10f gate bottom"a" oscillator control gate bottom"c" 0.1f rosc 22 ? 0.1f 16 vref feedback"a" 10f 5 gate top"a" 11 speed adjust vrefout 20f hall"c"input 1 12 17 22 ? uf4002 v+=40v gate top"b" 22 cap boost"b" bldc motor 10f 500 ? (3 places) h1 15 22 ? 3 hall"b"input 22 ? 15v hall"a"input 1k gate bottom"b" isense resistor 0.1f 14 9 counter reset 21 fwd/re input thermal switch 22 ? 7 gate top"c" h3 100f 19 supply voltage (+)currentlimit(brake) 100f brake vref 8 power ground foward/reverse 0.1f 1k 1k ? 24 cosc filter analog ground cap boost"c" 18 4 speed adjust input 10k ? 10 0.005f 20 2 23 h2 vref (-)currentlimit(reset) feedback"b" 6 13 22 ? cap boost"a" vout vcc FSH41 rl=820 ? cl=20pf
bipolar hall effect position sensor 2007-1-24 4/5 FSH41 ? hall sensor location the fig2 is hall sensor location, where marks the ic number. fig2 FSH41 hall sensor location ? ordering information ? marking information unit x 2.1 mm y 1.55 mm x y FSH41xxx package: m: sip3 packing: blank: tube or bulk temperature grade: f: -40~150
bipolar hall effect position sensor 2007-1-24 5/5 FSH41 ? package information dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.40 1.50 1.60 0.055 0.059 0.063 a1 0.69 0.74 0.79 0.027 0.029 0.031 b 2.52 2.62 2.72 0.099 0.103 0.107 b 1.22 1.27 1.32 0.048 0.05 0.052 c 0.58 0.023 c 0.331 0.381 0.431 0.013 0.015 0.017 d 3.9 4.0 4.1 0.154 0.157 0.160 d 0.1 0.004 e 3.0 3.1 3.2 0.120 0.124 0.128 e 2.44 2.54 2.64 0.096 0.100 0.104 l 13.0 14.0 15.0 0.51 0.55 0.59 l1 0.35 0.38 0.41 0.014 0.015 0.016 45 45 a a1 l1 b d e l c c b e d
|
