ats236 complementary output hall effect sensor this datasheet contains new product information. anachip corp. re serves 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. a4 mar 17, 2003 1/7 ? features - bipolar hall effect sensor - 4v to 20v operating voltage - 300ma (avg) output sink current - build-in protecting diode only for chip reverse power connecting - -20c to 85c operating temperature - low profile 4 pin sip package ? applications - dual-coils brush-less dc motor - dual-coils brush-less dc fan - revolution counting - speed measurement ? general description ats236 is a four-terminal hall effect sensor device with output drivers, mainly designed for electronic commutation of brush-less dc fan. this ic internally includes the regulator, protecting diode, hall plate, amplifier, comparator, and a pair of complementary open-collector outputs (do, dob) . while the magnetic flux density (b) is larger than operate point (bop) , do will turn on (low), and meanwhile dob will turn off (high). each output is latched until b is lower than release point (brp), and then do dob transfer each state. ? ordering information ats236 x -x x x packing blank : tube or bulk a : tape & reel p: sip-4l package lead l : lead free blank: normal wafer body blank or a~z : if necessary to specify ? typical circuit 12 4 3 236 coil1 coil2 vcc 5v/12v brush-less dc fan
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 2/7 ? block diagram 1 reg. hall plate amp do gnd 2 3 4 vcc dob ? pin assignment 236 12 4 3 1 : vcc 2 : do 3 : dob 4 :gnd front view name p/i/o pin # description vcc p 1 power supply input do o 2 output pin dob o 3 output pin gnd p 4 ground
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 3/7 ? absolute maximum ratings ( at ta=25 c ) characteristics symbol values unit supply voltage v cc 20 v reverse v cc polarity voltage v rcc -20 v magnetic flux density b unlimited continuous 0.3 hold 0.4 output ?on? current peak (start up) ic 0.7 a operating temperature range t a -20~+85 c storage temperature range t s -65~+150 c package power dissipation pd 550 mw maximum junction temp tj 150 c ? electrical characteristics ( ta = +25 c vcc = 4.0v to 20v ) characteristic symbol conditions min typ max unit low supply voltage vce vcc=4v, il=100ma 0.4 v supply voltage vcc 4 20 v output zener breakdown vz 35 v output saturation voltage vce(sat) vcc=14v, il=300ma 0.3 0.7 v output leakage current icex vce=14v, vcc=14v < 0.1 10 a supply current icc vcc=20v, output open 16 25 ma output rise time tr vcc=14v, rl=820 ? , cl=20pf 3.0 10 s output falling time tf vcc=14v, rl=820 ? , cl=20pf 0.3 1.5 s switch time differential ? t vcc=14v, rl=820 ? , cl=20pf 3.0 10 s ? test circuit 236 cl1 cl2 14v do dob rl1=rl2=820 ohm cl1=cl2=20 pf rl2 rl1
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 4/7 ? magnetic characteristics (ta=25 c) (1mt=10gauss) characteristic symbol min. typ. max. unit operate point b op 10 - 150 release point b rp -150 - -10 hysteresis b hys - 150 - gauss b hy v sat v cc ( output voltage ) b rp b op 0 ( magnetic flux density b ) do turn on turn off ( off-state ) ( on-state ) b hy v sat v cc ( output voltage ) b rp b op 0 ( magnetic flux density b ) dob turn off turn on ( off-state ) ( on-state )
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 5/7 ? performance characteristics (sip4) ta ( c) 25 50 60 70 80 85 90 95 100 105 110 115 120 pd (mw) 550 440 396 352 308 286 264 242 220 198 176 154 132 power dissipation curve 100 200 300 400 500 600 0 25 50 75 100 125 150 ta ( c) pd (mw ) 85 note sip-4l package. typical magnetic switch point vs. supply voltage -40 0 40 80 120 5122024 supply voltage (v) flux density (g) bhys bop brp typical supply current versus supply voltage 0 2 4 6 8 10 12 14 16 0 5 10 15 20 25 supply voltage (v) supply current (ma) ta=25 o c ta=80 o c ta=-20 o c
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 6/7 ? operation characteristics marking side s b hy v sat v cc ( output voltage ) v d b rp b op 0 ( magnetic flux density ) do high low ( sip4 ) n
ats236 complementary output hall effect sensor anachip corp. www.anachip.com.tw rev. a4 mar 17, 2003 7/7 ? package information active area depth package sensor location marking side 0.7mm 1.97mm 1.04mm 1234 package dimension 14.25mm +/-1.25mm 3 -5 5 o -7 o 1.03mm +/-0.1 1.55mm +/-0.1mm 0.38mm +/-0.03mm 5.22mm +/-0.1mm 4.20mm +/-0.1mm 3.65mm +/-0.1mm 1.42mm+/-0.1mm 1.27mm +/-0.03mm 0.38mm +/-0.03mm 3 o -5 o 5 o -7 o 0.30mm +/-0.1mm 3.81mm +/-0.03mm 236 0.46mm +/-0.03mm o o 0.2mm max. ? marking information 236 part number year: ( top view ) "2" = 2002 "1" = 2001 x x x x x nth week: 01~52 id code: blank or a ~ z blank : normal l : lead free package ~
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