SS441 unipolar hall-effect digital switch 1 v2.00 may 1, 2012 features and benefits a pplication examples ? automotive, consumer and industrial ? solid-state switch ? brushless dc motor commutation ? speed detection ? linear position detection ? angular position detection ? proximity detection ? ? 4.5v to 24v operation ? -40 to 150 superior temperature operation ? bipolar technology ? open-collector 25 ma output ? reverse battery protection ? small size-sot23 3l or sip 3l ? solid-state reliability ? resistant to physical stress ? activate with small, commercially available permanent magnets hall plate vdd out voltage regulatr choppe r gnd functional block diagram a package at package pin 1 ? v dd pin 1 ? v dd pin 2 ? gnd pin 2 ? out pin 3 ? out pin 3 ? gnd
SS441 unipolar hall-effect digital switch 2 v2.00 may 1, 2012 general description the SS441 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 cancellation 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 specific ations, 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 devices ideal for use with a simple bar or rod magnet. thanks to its wide operating voltage range and extended choice 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) or in a plastic single in line (sip 3l flat). both 3-lead packages are rohs compliant. glossary of terms millitesla (mt), gauss units of ma gnetic flux density: 1mt = 10 gauss rohs restriction of hazardous substances operating point (b op ) magnetic flux density applied on the bran ded 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)
SS441 unipolar hall-effect digital switch 3 v2.00 may 1, 2012 pin definitions and descriptions sot pin sip pin name type function 1 1 vdd s upp l y s upp l y v o l t a g e p i n 2 3 o ut o u t pu t open dr a i n output p i n 3 2 gnd g r ound ground p i n absolute maximum ratings parameter symbol value units s upp l y v o l t a g e v dd 28 v s upp l y c u rr e n t i dd 50 m a output v o l t a g e v o ut 28 v output c u rr e n t i o ut 50 m a storage temperature range t s -65 to 170 c absolute maximum ratings operating temperature range symbol value units temperature s u ff i x ? e ? t a -40 to 85 c temperature s u ff i x ? k ? t a -40 to 125 c temperature s u ff i x ? 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
SS441 unipolar hall-effect digital switch 4 v2.00 may 1, 2012 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 s upp l y v o l t a g e v dd o p e r a t i ng 4.5 24 v s upp l y c u rr e n t i dd b < b rp 4 5 7 m a output s a t u r a t i on v o l t a g e v d s on i out = 20ma, b > b op 0.3 0.5 v output l ea k a g e c u rr e n t i o ff b < b rp v out = 24 v 0.1 10 a output r i s e t i m e t r r l = 820? , c l = 20pf 0.04 2.0 s output f a ll t i m e t f r l =820 ? , c l = 20pf 0.18 2.0 s magnetic specifications dc operating parameters v dd = 4.5v to 24v (unless otherwise specified) parameter symbol test conditions min typ max units o p e r a t i ng p o i n t b op 70 85 100 g r e l ea s e p o i n t b rp 20 40 70 g hy s t e r e s i s b h y s ta=25 ,vdd=12v dc 45 g application information ?
SS441 unipolar hall-effect digital switch 5 v2.00 may 1, 2012 package information package a, 3-pin sip:
SS441 unipolar hall-effect digital switch 6 v2.00 may 1, 2012 package at, 3-pin sot-23: ordering information part no. pb-free temperature code package code packing SS441esot yes -40c to 85c sot-23 7-in. reel, 3000 pieces/ reel SS441eua yes -40c to 85c to-92 bulk, 1000 pieces/ bag SS441ksot yes -40c to 125c sot-23 7-in. reel, 3000 pieces/ reel SS441kua yes -40c to 125c to-92 bulk, 1000 pieces/ bag SS441lsot yes -40c to 150c sot-23 7-in. reel, 3000 pieces/ reel SS441lua yes -40c to 150c to-92 bulk, 1000 pieces/ bag ?
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