fs72x FS72XY single digital output hall effect latch this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 1 feeling technology features maximum output sink current 50ma open-drain pre-driver power reverse polarity protection available in sip-3l, sot23(FS72XY) package general description fs72x/FS72XY is a hall sensor with latched digital output. its suitable for electronic commutation of brushless dc motor applications. the fs72x/FS72XY uses a chopper amplifier for magnetic signal amplification, which can achieve a low offset and thus precise magnetic swit ching thresholds. if a magnetic flux density larger than threshold bo p,no is turned on(low). the output state is held un til a magnetic flux density reversal falls below brp causing no to be turned off (high) block diagram figure.1 pb free bias generator hall plate sequencer chopper amplifier digital control logics power on reset oscillator
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 2 feelin g technology pin connection. figure 2 pin descriptions name i/o fs72x FS72XY description vdd p 1 1 positive power supply vss g 2 3 ground no o 3 2 driver output legend: i=input, o=output, i/o=input/output, p=powe r supply, g=ground functional descriptions refer to the block diagram (figure.1), fs72x/FS72XY is composed of the following building blocks: bias generator the bias generator provides precise, temperature- a nd process-insensitive bias references for the anal og blocks. these references guarantee proper operation of the chip under all conditions specified in this specifi cation. oscillator + sequencer the built-in oscillator provides the clock signal, which is taken by the sequencer to generate the seq uential signals necessary for both the hall sensor and the digital control logics power on reset used to detect the power-up ramp and reset the digi tal circuits to attain correct operation as soon as the power is ready. chopper amplifier to achieve a higher magnetic sensitivity the choppe r amplifier structure is adopted in this design. us e of this structure dynamically removes both the offset and f licker noise at the same time. digital control logics generates controlling signals for the hall sensor. no vss vdd 1 2 3 mark side FS72XY fs72x no vss vdd top view 3 1 2
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 3 feelin g technology figure.3 note . detail information please check application note . suggestion value : r1=1k ohm,r3=330 ohm, r=30 ohm ,c=2.2uf, c1>0.1uf +12v fs72x/FS72XY gnd vdd no r1 l1 l2 r2 brushless dc fan rc optional for electromagnetic sound c1 r3
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 4 feelin g technology absolute maximum ratings parameter symbol conditions values unit min. typ. max. operating temperature t op - -20 105 storage temperature t st - -40 150 dc supply voltage v dd - 2.4 16 v supply current i dd - 10 ma continuous current i o(cont) 50 ma junction temperature t j 150 lead temperature 10sec 260 figure.4 255 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
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 5 feelin g technology recommended operating conditions parameter symbol conditions values unit min. typ. max. supply voltage v dd - 2.4 16 v operating temperature range t a - -20 105 electrical characteristics v dd =12.0v, t a =25 (unless otherwise specified) parameter symbol conditions values unit min. typ. max. average supply current(no load) i dd - 3.0 10 ma output saturation voltage v sat iout= 50ma 0.5 0.8 v output leakage current i leak v out =12v 20 a on resistance r on 10 magnetic characteristics parameter symbol conditions values unit min. typ. max. operate points b op +25 g release points b rp -25 g hysteresis b hyst 50 g hysteresis characteristics figure.5 b (magnetic) +n magnetic flux density in gauss vout 0 -s -s +n vsat output voltage in voltage
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 6 feelin g technology marking information sip-3l: 72x sot23: figure.6 part number : m lot number year mass production version
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 7 feelin g technology package dimension (unit: mm) sip-3l (pb free) 2. 1 mm 1.55 mm s ensor location (top view)
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 8 feelin g technology sot23 symbols dimension in millimeters min nom max a - - 1.45 a1 - - 0.15 a2 0.90 1.15 1.30 b 0.30 - 0.50 c 0.08 - 0.22 d 2.90bsc e 2.80bsc e1 1.60bsc e 0.95bsc e1 1.90bsc l 0.30 0.45 0.60 l1 0.60ref l2 0.25bsc r 0.10 - - r1 0.10 - 0.25 0 ? 4? 8? 1 5? 10 ? 15? sensor location 0.86mm 1.12mm
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 9 feelin g technology packing specification (tapping reel) sot23 packing quantity specification 2500ea / 1 reel 4 reels / 1 inside box 2 inside boxes / 1 outside box
fs72x FS72XY this datasheet contains new product information. f eeling technology reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of t his product. no rights under any patent accompany t he sales of the product. rev1.2 june. 29, 2009 p. 10 feelin g technology order information part number operating temperature package moq marking fs72x-lf -20 to +105 sip-3l 1000ea - FS72XY-lf -20 to +105 sot23 2500ea/reel mxxxx
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