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the APX9141 is an integrated hall effect sensor ic designed for electric commutation of dc brushless motor applications. the APX9141 still can operate at as low as 3 volts. the APX9141 is avail- able in low cost to -92m4 package with 3 different magnetic ranks.

? ? ? ? ? brushless dc fan ? ? ? ? ? revolution counting ? ? ? ? ? brushless dc motor ? ? ? ? ? speed measurement ? ? ? ? ? on-chip reverse voltage protection ? ? ? ? ? on-chip hall sensor ? ? ? ? ? low operating supply voltage : 3 v ? ? ? ? ? high output sinking capability up to 400ma ? ? ? ? ? versatile sensitivity and hysteresis setting ? ? ? ? ? reliable and rugged ? ? ? ? ? 4 pin to-92m package APX9141 1 : v dd 23 2 : do 1 3 : dob 4 4 : gnd front view APX9141 magnetic rank handling code temp. range package code magnetic rank at : | bop , brp | < 50 gauss a : | bop , brp | < 70 gauss b : | bop , brp | < 100 gauss d : | bop , brp | < 150 gauss package code e : to - 92m4 temp. range e : -20 to 85 c handling code pb : plastic bag tb : tape & box tr : tape & reel lead free code l : lead free device blank : original device lead free code

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gnd do APX9141 temperature compensated voltage regulator hall element current amplifier latch circuit output buffer 1 hysteresis control sensitivity control v dd output buffer 2 dob reverse voltage protection symbol parameter rating unit v dd supply voltage 20 v v bd output breakdown voltage 55 v i dd supply current 25 ma i out output current ? continuous hold current peak (start up) 400 600 800 ma p d maximum power dissipation 500 mw t a operating ambient temperature -20 to 85 t stg storage temperature range -65 to 150 t sol soldering temperature (10 sec.) 260 c APX9141 symbol parameter test condition min. typ. max. unit v dd supply voltage operating 3 20 v v sat output saturation voltage v dd =14v, i out =400ma, b>bop 250 500 mv i dd supply current v dd =20v, output open 20 25 ma i leak a output leakage current v out =20v, v dd =20v, b
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* rank maximum operate point bop maximum release point brp unit at +50 -50 a+70 -70 b +100 -100 d +150 -150 gauss $% t a = 25 c, v dd =14v unless otherwise noted note : for 5cm and below dc fan application, grade a/at device is recommended to avoid magnetic sensitivity problem. for above 5cm dc fan application, grade b device is acceptable for most cases. figure 1 : switching circuit for output rise time and fall time measurement & $ signal generator v dd scope 23 14 c l2 c l1 r l1 r l2 APX9141 figure 2 typical dc brushless fan application circuit 23 1 v dd +b -b APX9141 l1 l2 4 v dd c1 c3 c2

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0 5 10 15 20 25 -20 0 20 40 60 80 100 &' $% supply current vs. supply voltage supply voltage (v) supply current (ma) output saturation voltage vs. output current output current (ma) output saturation voltage (mv) output low voltage vs ambient temperature temperature ( c) output low voltage (mv) supply current vs temperature temperature ( c) supply current (ma) -10 -5 0 5 10 15 20 25 -30 -20 -10 0 10 20 30 40 50 0 50 100 150 200 250 0 100 200 300 400 500 150 175 200 225 250 275 300 -20 0 20 40 60 80 100 i out =400ma v dd =14v v cc =14v v cc =3v v cc =20v t a =25 c

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+ -100 -80 -60 -40 -20 0 20 40 60 80 100 0 5 10 15 20 -150 -100 -50 0 50 100 150 -20 0 20 40 60 80 100 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 102030405060 magnetic switch points vs supply voltage supply voltage (v) magnetic switch points (g) &' $% ($)* magnetic switch points vs temperature magnetic switch points (g) temperature ( c) 0 100 200 300 400 500 600 0 25 50 75 100 125 150 ambient temperature ( c) power dissipation vs. ambient temperature output current (ua) output voltage (v) output breakdown voltage vs. current power dissipation (mw) output breakdown voltage bop brp i out =400ma v dd =14v i out =400ma t a =25 c bop brp

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, to-92m4 a l1 j d b1 e1 e sensitive area (0.286 0.286m m 2) position of hall sensor reference to the top-left of package x= 0.41 0.1m m y= 0.88 0.1m m 0.88mm 0.41mm s e l c ic ch ip marking surface millimeters inches dim min. max. min. max. a 3.60 3.70 0.141 0.145 b1 0.35 0.41 0.014 0.016 c 0.351 0.411 0.014 0.016 d 5.17 5.27 0.203 0.207 e 3.78 3.84 0.148 0.150 e1 1.24 1.30 0.049 0.051 e 1.50 1.60 0.059 0.063 j 4.04 4.34 0.158 0.170 l 14.0 15.0 0.549 0.588 l1 1.342 1.542 0.053 0.060 s 0.45 0.55 0.018 0.022

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%' + terminal material solder-plated copper (solder material : 90/10 or 63/37 snpb), 100%sn lead solderability meets eia specification rsi86-91, ansi/j-std-002 category 3. t 25 c to peak tp ramp-up t l ramp-down ts preheat tsmax tsmin t l t p 25 temperature time critical zone t l to t p ", $ (ir/convection or vpr reflow) $ ", sn-pb eutectic assembly pb-free assembly profile feature large body small body large body small body average ramp-up rate (t l to t p ) 3 c/second max. 3 c/second max. preheat temperature min (tsmin) temperature mix (tsmax) time (min to max)(ts) 100 c 150 c 60-120 seconds 150 c 200 c 60-180 seconds tsmax to t l - ramp-up rate 3 c/second max tsmax to t l temperature(t l ) time (t l ) 183 c 60-150 seconds 217 c 60-150 seconds peak temperature(tp) 225 +0/-5 c 240 +0/-5 c 245 +0/-5 c 250 +0/-5 c time within 5 c of actual peak temperature(tp) 10-30 seconds 10-30 seconds 10-30 seconds 20-40 seconds ramp-down rate 6 c/second max. 6 c/second max. time 25 c to peak temperature 6 minutes max. 8 minutes max. note: all temperatures refer to topside of the package. measured on the body surface.

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- anpec electronics corp. head office : 5f, no. 2 li-hsin road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 taipei branch : 7f, no. 137, lane 235, pac chiao rd., hsin tien city, taipei hsien, taiwan, r. o. c. tel : 886-2-89191368 fax : 886-2-89191369 $ +-

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