single output hall effect latch ats177 this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev.1.0 oct 13, 2005 1/7 atc ? features - 3.5v to 20v dc operation voltage - temperature compensation - wide operating voltage range - open-collector pre-driver - 25ma maximum sinking output current. - reverse polarity protection - package: sip3, sot23 ? applications - brush-less dc motor - brush-less dc fan - revolution counting - speed measurement ? general description ats177 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 amplifies the hall voltage, and a schmitt trigger to provide 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. if a magnetic flux density larger than threshold bop, do is turned on(low). the output state is held until a magnetic flux density reversal falls below brp causing do to be turned off (high). ? ordering information ats177 x -x x x -x packing blank : bulk a : tape & reel p: sip3 w: sot23 package lead l : lead free wafer body magnetic characteristics blank or a~z : if necessary to specify a or b (for sot23 only) ? typical application circuit +12v u1 ats177 vcc 1 gnd 2 output 3 q1 npn q2 npn r1 2k r2 3k d1 + c1 0.47uf + c2 0.47uf l1 l2 brush-less dc fan actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 2/7 atc ? functional block diagrams regulator hall plate amp 2 vss do 3 2 vcc 1 ? pin descriptions 177 1 2 : vss 3 : do 23 177 1 2 3 1 : vcc top view name p/i/o pin # description vcc p 1 positive power supply vss p 2 ground do o 3 digital output actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 3/7 atc ? absolute maximum ratings ( at ta=25 o c ) characteristics symbol values unit supply voltage v cc 20 v reverse vcc polarity voltage v rcc -20 v magnetic flux density b unlimited output off voltage vce 30 v output ?on? current continuous ic 25 ma operating temperature range ta -20~+85 c storage temperature range ts -65~+150 c maximum junction temp. tj 150 c sip-3l 550 mw package power dissipation sot23-3l pd 230 mw ? electrical characteristics (ta=+ 25 c) characteristic symbol test conditions min typ max units supply voltage vcc ? 3.5 - 20 v output saturation voltage vce(sat) vcc=14v, ic=20ma - 300 700 mv output leakage current icex vce=14v, vcc=14v - < 0.1 10 ua supply current icc vcc=20v, output open - 5 10 ma output rise time tr vcc=14v, rl=820 ? , cl=20pf - 0.3 1.5 us output falling time tf vcc=14v, rl=820 ? , cl=20pf - 0.3 1.5 us ? test circuit cl 14v do rl=820 ohm cl=20 pf rl test circuit actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 4/7 atc ? magnetic characteristics (ta= 25 c) (1mt=10gauss) a grade parameter symbol min. typ. max. unit operate point bop 5 - 70 gauss release point brp -70 - -5 gauss hysteresis bhys - 80 - gauss b grade parameter symbol min. typ. max. unit operate point bop - - 100 gauss release point brp -100 - - gauss hysteresis bhys - 80 - gauss *b grade is for sip package only. 12 10 8 6 4 2 op on off rp output voltage in volts -200 200 100 -100 0 magnetic flux density in gauss do vsat typical magnetic switch point vs. temperuture -50 0 50 100 -20 25 80 100 temperature ( o c) flux density (b) bop brp bhys actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 5/7 atc ? performance characteristics (sip3) ta ( c) 25 50 60 70 80 85 90 95 100 pd (mw) 550 440 396 352 308 286 264 242 220 ta ( c) 105 110 115 120 125 130 135 140 150 pd (mw) 198 176 154 132 110 88 66 44 0 power dissipation curve 0 100 200 300 400 500 600 0 25 50 75 100 125 150 ta ( c) pd (mw ) 85 ? performance charact eristics (sot23-3) ta ( c) 25 50 60 70 80 85 90 100 110 120 125 130 140 150 pd (mw) 230 184 166 147 129 120 110 92 74 55 46 37 18 0 power dissipation curve 0 100 200 300 0 25 50 75 100 125 150 ta ( c) pd (mw) 85 ? marking information (1) sot23 (2) sip3 j7:ats177 xx ym x date code y : year m :month (a~l) (top view) id code a~z: non-lead free a~z: lead free 177 yww x date code y : year ww : nth week (top view) id code a~z: non-lead free a~z : lead free actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 6/7 atc ? package information (unit: mm) (1)package type: sip-3l active area depth sensor location 123 2.10mm 1.55mm 0.51mm nom branded surface package dimension 1.57mm 1.47mm 4.17mm 4.04mm 1.82 mm 15.50mm 13.00mm 1 2 3 1.27mm 0.41mm 0.41mm 45 o 45 o 0.38mm 0.7mm 3.10mm 2.97mm actual package is sc-59, not sot-23 not recommended for new design
single phase hall effect latch ats177 anachip corp. www.anachip.com.tw rev.1.0 oct 13, 2005 7/7 atc (2)package type: sot23-3l e e he d a2 a1 b(3x) a 2(4x) e1 2 1 3 1.45mm 0.8mm ( sensing point ) 1(4x) l view c l1 gauge plane c see view c m dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 m 0.73 0.78 0.83 0.029 0.031 0.033 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o actual package is sc-59, not sot-23 not recommended for new design
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