ss159 unipol ar hall switch - low sensitivity 1 v 3 1 0 nov 1 , 20 1 3 packages f eat u r es a n d b e n ef i ts 3 pin sot23 (suffix so) 3 pin sip (suffix ua) ? 3.5v to 24v operation ? - 40 c to 150 c superior temperature operation ? cmos technology ? low current consumption ? chopper - stabilized amplifier stage ? open drain ou tput ? low sensitivity ? small size sot23 3l or sip 3l b oth rohs c ompliant packages functional block diagram application examples ? automotive, consumer and industrial ? solid - state switch ? brushless dc motor commutation ? speed detection ? angular position detection ? proximity detection ? current detector general description the ss159 is a uni polar hall - effect sensor ic fabrica t- ed from cmos technology. the device integrates a voltage regulator, hall sensor with dynamic offset ca n- cellation syst em, small signal amplifier, schmitt trigger and an open - drain output driver. 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 specificat ions, designed to ope r- ate continuously over extended temperatures to +150 c , and are more stable with both temperature and supply vol t- age changes. the unipolar switching characteristic makes these devices ideal for use with a simple bar or rod ma g- net. than ks 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) and in a plastic single in line ( sip 3l flat). both 3- lead packages are rohs compliant. v dd out voltage regulat o r chopper hall plate gnd sip package so t package pin 1 ? v dd pin 1 ? v dd pin 2 ? gnd pin 2 ? out pin 3 ? out pin 3 ? gnd
ss159 unipol ar hall switch - low sensitivity 2 v 3 1 0 nov 1 , 20 1 3 glossary of terms millitesla (mt), gauss units of magnetic flux density: 1mt = 10 gauss rohs restriction of hazardous substances operat ing point (b op ) magnetic flux density applied on the brand ed 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 v dd supply supply voltage pin 2 3 out output open drain output pin 3 2 gnd ground ground pin 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 operating temperature range symbol value units temperature suffix ?e? t a - 40 to 85 c temperature suffix ? k ? t a - 40 to 125 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.
ss159 unipol ar hall switch - low sensitivity 3 v 3 1 0 nov 1 , 20 1 3 general electrical specifications dc operating parameters t a = 25 c , v dd = 3.5v to 24v ( unless otherwise specified) parameter symbol test conditions min typ max units supply voltage v dd operating 3.5 24 v supply current i dd b < b rp 1.5 2.5 5 ma output saturation voltage v dson i out = 20ma, b > b op 0.4 0.5 v output leakage current i off b < b rp v out = 24v 0.01 10 a output rise time t r r l = 1k ?, c l = 20pf 0.25 s output fall time t f r l = 1k ?, c l = 20pf 0.25 s magnetic specifications dc operating parameters v dd = 3.5v to 24v (unless otherwise specified) pa ckage parameter symbol test conditions min typ max units ua operating point b op ta=25c,vdd=12v dc 100 125 150 g release point b rp 60 85 110 g hysteresis b hys t 40 g so operating point b op ta=25c,vdd=12v dc - 150 - 125 - 100 g release point b rp - 110 - 85 - 60 g hysteresis b hys t 40 g output behavi or versus magnetic pole d c operating parameters t a = - 40 c to 150 c , v dd = 3 .5v to 24v (unless otherwise specified) test conditions ( ua) test conditions (s o ) out b < b rp b > b rp high b > b op b < b op low the sot - 23 device is reversed from the ua pack age. the sot - 23 output tra nsistor will be turned on (drops low) in the presence of a sufficiently strong north pole magnetic field applied to the marked face .
ss159 unipol ar hall switch - low sensitivity 4 v 3 1 0 nov 1 , 20 1 3 application information typical three - wire application circuit automotive and harsh, noisy environments three - wire circuit application comments for proper operation, a 100nf bypass capacitor should be placed as close as possible to the device between the v dd and ground pin. for reverse voltage protection, it is recommended to connect a resistor or a diode in ser ies with the v dd pin. when using a resistor, three points are important: - the resistor has to limit the reverse current to 50ma maximum (v cc / r1 50ma) - the resulting device supply voltage v dd has to be higher than v dd min (v dd = v cc ? r1.i dd ) - the re sistor has to withstand the power dissipated in reverse voltage condition (p d = v cc 2 / r1) when using a diode, a reverse current cannot flow and the voltage drop is almost constant ( 0.7v) . therefore, a 100 ? /0.25w resistor for 5v application and a diode for higher supply voltage are recommended. when a weak power supply is used or when the device is intended to be used in noisy environment, it is reco m- mended th e second figure above is used. the low - pass filter formed by r1 and c1 and the z ener diode z1 b ypass the disturbances or voltage spikes occurring on the device supply voltage v dd . the diode d1 provides additional reverse voltage protection. both solutions provide the required reverse voltage protection.
ss159 unipol ar hall switch - low sensitivity 5 v 3 1 0 nov 1 , 20 1 3 esd precautions electronic semiconductor pr oducts are sensitive to electro static discharge (esd). always observe electro static discharge control procedures whenever handling semiconductor products. package information package ua, 3 - pin sip: 4.0 0.01 1 2 3 1.27 2.13 1.87 1.00 1.20 45 1 1.52 0.1 3 1 0.75 0.05 3.0 0.01 0.44 0.01 0.05 0.05 1.6. 0.1 0.84(nom) 3 1 6 1 6 1 3 1 14 .5 1 active area depth: sensor location 1 2 3 notes: 1). controlling dimension : mm ; 2). le a ds must be free of flash and plating voids ; 3). do not bend leads within 1 mm of lead to package interface ; 4). pinout: pin 1 v dd pin 2 gnd pin 3 output 0.39 0.01 0.38 0.01 2.54
ss159 unipol ar hall switch - low sensitivity 6 v 3 1 0 nov 1 , 20 1 3 package so , 3- pin sot - 23: ordering information part no. pb - free temperature code package code packing ss159esot yes - 40c to 85c sot - 23 7- in. reel, 3000 pieces/reel ss159eua yes - 40c to 85c to - 92 bulk, 1000 pieces/bag ss159 k sot yes - 40c to 12 5c sot - 23 7- in. reel, 3000 pieces/reel ss159 k ua yes - 40c to 12 5c to - 92 bulk, 1000 pieces/bag ss159 l sot yes - 40c to 150c sot - 23 7- in. reel, 3000 pieces/reel ss159 l ua yes - 40c to 150c to - 92 bulk, 1000 pieces/bag 2.70 3.10 1.00 1.30 0.70 0.90 0.00 0.10 0.35 0.50 0.10 0.25 0.20 m in 2.60 3.00 1.50 1.8 0 1.70 2.10 3 2 1 top side vie end notes 1). pinout: pin 1 v dd pin 2 output pin 3 gnd 2). all dimensions are in millimeters;
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