fs177n single hall effect senser this datasheet contains new product informat ion. feeling technology reserves the ri ghts to modify the product specification wi thout notice. no liability is assumed as a result of t he use of this product. no rights under any patent accompany the sales of the product. rev2.0 apr. 23, 2012 p. 1 feeling technolog y features ? wide operating voltage range: 3.0v to 28v ? maximum output sink current 50ma ? open-collector pre-driver ? power reverse polarity protection ? available in sip-3l package general description the fs177n is an integrated hall effect sensor desig ned for electronic commutation of brush-less dc motor applications. the device includes an on-chip hall voltage generator for magnetic sensi ng, a comparator that amplifies the hall voltage, and a schmitt trigger to pr ovide switching hysteresis for noise rejection, and open-collector output. an internal bandgap regulator is used to provide temperature 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. block diagram figure.1 vdd regulator hall sensor 1 2 3 gnd output halogen free
fs177n rev2.0 apr. 23, 2012 p. 2 feeling technolog y pin connection figure.2 pin descriptions name i/o pin no. description vdd p 1 positive power supply gnd g 2 ground output o 3 driver output legend: i=input, o=output, i/o=input/output, p=power supply, g=ground functional application circuit figure.3 1. vdd 2. gnd 3. output [top view] m m : 3 phase dc motor : hall effect sensor dc motor driver h a h b h c i c i b i a i c i b i a motor driver & control logic
fs177n rev2.0 apr. 23, 2012 p. 3 feeling technolog y absolute maximum ratings values parameter symbol conditions min. typ. max. unit operating temperature t op - -40 150 storage temperature t st - -65 150 dc supply voltage v dd - 3.0 28 v supply current i dd - 10 ma continuous current i o(cont) 50 ma junction temperature t j 160 power dissipation p d sip-3l 500 mw thermal resistance jc sip-3l 0.27 /mw lead temperature 10sec 260 figure.4 figure.5 255 5 o c 10 1 sec 150 10 o c 90 30 sec 2~5 o c /sec 2~5 o c /sec second soldering condition room temp 0 25 50 75 100 125 150 314 407 500 pd ( mw) temp. ( ) o c power dissipation curve 175 221 128 35 0 160 o c
fs177n rev2.0 apr. 23, 2012 p. 4 feeling technolog y recommended operating conditions values parameter symbol conditions min. typ. max. unit supply voltage v dd - 3.0 28 v operating temperature range t a - -40 150 electrical characteristics v dd =12.0v, t a =25 (unless otherwise specified) values parameter symbol conditions min. typ. max. unit average supply current(no load) i dd - 3.5 10 ma output saturation voltage v sat iout= 20ma 165 200 mv output rise time t r rl=500 ? , cl=20pf(figure 7) 0.2 - 0.75 s output fall time t f rl=500 ? , cl=20pf(figure 7) 20 - 150 ns magnetic characteristics values parameter symbol conditions min. typ. max. unit operate points b op +140 - - g release points b rp - - +60 g hysteresis b hyst 30 - 120 g hysteresis characteristics figure.6 b (magnetic) +n magnetic flux density in gauss vout 0 -s -s +n vsat output voltage in voltage
fs177n rev2.0 apr. 23, 2012 p. 5 feeling technolog y test circuit figure.7 marking information figure.8 vcc fs177n gnd vcc output 1 2 3 rl cl vout [top view] 177n mass production version half month (ex:a,b ~ x) year (ex:2008 8) g halogen free
fs177n rev2.0 apr. 23, 2012 p. 6 feeling technolog y package dimension (unit: mm) sip-3l (halogen free) 2.1mm 1.55mm sensor location (top view)
fs177n rev2.0 apr. 23, 2012 p. 7 feeling technolog y order information part number operating temperature package moq FS177NG1 -40 to +150 sip-3l 1000ea
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