ss129 unipolar hall-effect digital switch packages features and benefits ? 4.5v to 24v operation ? -40 to 150 superior temperature operation ? bipolar technology ? open-collector 25 ma output ? reverse battery protection ? solid-state reliability ? resistant to physical stress ? small size-sot23 3l or sip 3l ? activate with small, commercially available 3 pin sot23 (suffix so) 3 pin sip (suffix ua) permanent magnets ? functional block diagram application examples ? automotive, consumer and industrial ? solid-state switch ? brushless dc motor commutation ? speed detection ? angular position detection ? linear position detection ? proximity detection ? general description the ss129 is a unipolar hall-effect sensor ic fabricated from bipolar technology. the device integrates a voltage regulator, reverse battery protection diode, hall sensor with dynamic offset cance llation system, temperature compensation circuitry, small signal amplifier, schmitt trigger and an open-collector output to sink up to 25 ma. with suitable output pull up, they can be used with bipolar or cmos logic circuits these hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150 , and are more stable with both temperature and supply voltage changes. the unipolar switching characteristic makes these de vices ideal for use with a simple bar or rod magnet. thanks to its wide operating voltage range and extended c hoice of temperature range, it is quite suitable for use in automotive, industrial and consumer applications. the device is delivered in a small outline transistor (sot) and in a plastic single in line ( sip 3l flat). both 3-lead packages are rohs compliant. vdd out voltage regulator choppe r hall plate gnd sip package sot package pin 1 ? v dd pin 1 ? v dd pin 2 ? gnd pin 2 ? out pin 3 ? out pin 3 ? gnd ? 1 v2.10 may 1, 2012
ss129 unipolar hall-effect digital switch glossary of terms millitesla (mt), gauss units of magnetic flux density: 1mt = 10 gauss rohs restriction of hazardous substances operating point (b op ) magnetic flux density applied on the branded side of the package which turns the output driver on (v out = v dson ) release point (b rp ) magnetic flux density applied on the branded side of the package which turns the output driver off (v out = high) pin definitions and descriptions ? sot pin sip pin name type function 1 1 vdd supply supply voltage pin 2 3 out output open drain output pin 3 2 gnd ground ground pin table 1: pin definitions and descriptions absolute maximum ratings parameter symbol value units supply voltage v dd 28 v supply current i dd 50 ma output voltage v out 28 v output current i out 50 ma storage temperature range t s -65 to 170 c table 2: absolute maximum ratings operating temperature range symbol value units temperature suffix ?e? t a -40 to 85 c temperature suffix ?k? t a -40 to125 c temperature suffix ?l? t a -40 to 150 c exceeding the absolute maximum ratings may cause permanent damage. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2 v2.10 may 1, 2012
ss129 unipolar hall-effect digital switch general electrical specifications dc operating parameters t a = 25 , v dd = 4.5v to 24v (unless otherwise specified) parameter symbol test conditions min typ max units supply voltage v dd operating 4.5 24 v supply current i dd b < b rp 4 5 7 ma output saturation voltage v dson i out = 20ma, b > b op 0.3 0.5 v output leakage current i off b < b rp v out = 24v 0.1 10 a output rise time t r r l = 820 ? , c l = 20pf 0.04 2.0 s output fall time t f r l = 820 ? , c l = 20pf 0.18 2.0 s table 3: electrical specifications magnetic specifications dc operating parameters v dd = 4.5v to 24v (unless otherwise specified) ss129 parameter symbol test conditions min typ max units operating point b op 160 180 200 g release point b rp 110 140 170 g hysteresis b hyst ta=25 ,v dd =12v dc 40 g table 4: magnetic specifications application information 3 v2.10 may 1, 2012
ss129 unipolar hall-effect digital switch ? package information package a, 3-pin sip: ? 4 v2.10 may 1, 2012
ss129 unipolar hall-effect digital switch package at, 3-pin sot-23: ? ordering information part no. pb-free temperature code package code packing ss129esot yes -40c to 85c sot-23 7-in. reel, 3000 pieces/reel ss129eua yes -40c to 85c to-92 bulk, 1000 pieces/bag SS129KSOT yes -40c to 125c sot-23 7-in. reel, 3000 pieces/reel ss129kua yes -40c to 125c to-92 bulk, 1000 pieces/bag ss129lsot yes -40c to 150c sot-23 7-in. reel, 3000 pieces/reel ss129lua yes -40c to 150c to-92 bulk, 1000 pieces/bag ? 5 v2.10 may 1, 2012
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