ss5782 unipolar hall switch 1 v2.00 may 1, 2012 application examples f eatures and benefits ? automotive, consumer and industrial ? w ide operating voltage range from 2.5v to 24v ? soli d-state switch ? med ium sensitivity ? interru pter ? cmo s technology ? s peed detection ? chop per-stabilized amplifier stage ? li near position detection ? sup erior temperature stability ? a ngular position detection ? ex tremely low switchpoint drift ? p roximity detection ? in sensitive to physical stress ? low current consumption ? ? o pen drain output ? tiny sot23 3l or flat sip 3l both rohs compliant packages 3 pin sot23 (suffix so) 3 pin sip (suffix ua) functional block diagram vdd out voltage regulatr ? 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
ss5782 unipolar hall switch 2 v2.00 may 1, 2012 ? general description the ss5782 is a unipolar hall effect sensor ic fabricated from mixed signal cmos technology. the device integrates a voltage regulator, hall sensor with dynamic offset cancellation system, schmitt trigger and an open-drain output driver, all in a single package. it incorporates advanced chopper stabilization techniques to provide accurate and stable magnetic switch points. there are many applications for this hed ? hall electronic device - in addition to those listed above. thanks to its wide operating voltage range and extended choice of temperat ure range, it is quite suitable for use in automotive, industrial and consumer applications. the device is delivered in a small outline transistor (sot) for surface mount proce ss or in a plastic single in line (sip flat) for through- hole mount. both 3-lead packages are rohs compliant. glossary of terms millitesla (mt), gauss units of magnetic flux density: 1mt = 10 gauss rohs restriction of hazardous substances sot small outline transistor (sot package) ? also referred with the package code ?so? esd electro-static discharge bldc brush-less direct-current 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)
ss5782 unipolar hall switch 3 v2.00 may 1, 2012 pins definition and description sot pin sip pin name type function 1 1 v dd 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 unique features based on mixed signal cmos technology, ss5782 is a hall-effect device with high magnetic sensitivity. this multi-purpose latch meets most of the application requirements. the chopper-stabilized amplifier uses switched capacitor technique to suppress the offset generally observed with hall sensors and amplifiers. the cmos technology makes this advanced technique possible and contributes to smaller chip size and lower current consumption than bipolar technology. the small chip size is also an important factor to minimize the effect of physical stress. this combination results in more stable magnetic characteristics and enables faster and more precise design. the wide operating voltage from 2.5v to 24v, low current consumption and large choice of operating temperature range according to ?l?, ?k?and ?e? specifications make this de vice suitable for automotive, industrial and consumer applications. 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 -50 to 150 c m a x i m u m j un c t i on temperature t j 165 c
ss5782 unipolar hall switch 4 v2.00 may 1, 2012 ? 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 perm anent damage. exposure to absolute-maximum- rated conditions for extended periods may affect device reliability. general electrical specifications dc operating parameters t a = 25 , v dd = 2.5v 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 2.2 24 v s upp l y c u rr e n t i dd b < b rp 5 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 0.5 v output l ea k a g e c u rr e n t i o ff b < b rp v out = 24 v 1 10 a output r i s e t i m e t r r l = 1k ? , c l = 20pf 0.25 s output f a ll t i m e t f r l = 1k ? , c l = 20pf 0.25 s m a x i m u m s w i t c h i ng f r e qu e n c y f s w --- 10 k h z package t h e r m a l r e s i s t a n c e r th s i ng l e l a y e r (1s) jedec bo a r d 301 c /w note: the output of ss5782 will be switched after the supply voltage is over 2.2v, but the magnetic characteristics won't be normal until the supply is over 2.5v. magnetic specifications dc operating parameters v dd = 2.5v 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 -150 -120 -90 g r e l ea s e p o i n t b rp -120 -80 -40 g hy s t e r e s i s b h y s e spec., t a = 85c 30 40 50 g o p e r a t i ng p o i n t b op -160 -120 -85 g r e l ea s e p o i n t b rp -130 -80 -35 g hy s t e r e s i s b h y s k spec., t a = 125c 30 40 50 g o p e r a t i ng p o i n t b op -170 -120 -80 g r e l ea s e p o i n t b rp - 140 -80 -30 g hy s t e r e s i s b h y s l spec., t a = 150c 30 40 50 g
ss5782 unipolar hall switch 5 v2.00 may 1, 2012 output behaviour versus magnetic pole dc operating parameters t a = -40 c to 150 c, v dd = 2.5v to 24v (unless otherwise specified) parameter test conditions out north po l e (to) b > b op low south po l e (sot) b > b op low n ull or weak magnetic fiel d b= 0 or b < brp high table : output behaviour versus magnetic pole application information it is strongly recommended that an external bypass capacitor be connected (in close proximity to the hall sensor) between the supply(vdd pin) and ground(gnd pin) of the device to reduce both external noise and noise generated by the chopper stabilization technique. as is shown in the two figures in next page, a 0.1 f capacitor is typical. for reverse voltage protection, it is recommended to connect a resistor or a diode in series 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 resistor 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. both solutions provide the required reverse voltage protection. when a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended that figure 13.3 from the application information section is used. the low-pass filter formed by r1 and c1 and the zener diode z1 bypass the disturbances or voltage spikes occurring on the device supply voltage v dd . the diode d1 provides additional reverse voltage protection. a utomotive and s evere environment protection circuit typical three-wire application c ircuit ss5782 r2 c2 vdd gnd out c1 ss5782 r1:100 vdd r2 c1 d1 out z1 c2 gnd
ss5782 unipolar hall switch 6 v2.00 may 1, 2012 esd precautions electronic semiconductor products are sensitive to electro static discharge (esd). always observe electro static discharge control procedures whenever handling semiconductor products.
ss5782 unipolar hall switch 7 v2.00 may 1, 2012 package information package ua, 3-pin sip(to-92):
ss5782 unipolar hall switch 8 v2.00 may 1, 2012 package so, 3-pin (sot-23): ? hall plate location 0.56 0.66 1.50 1.40 chip 3 2 1 b ottom view of sot-23 packa g e 0.95 0.80 ?
ss5782 unipolar hall switch 9 v2.00 may 1, 2012 ordering information part no. pb-free temperature code package code packing ss5782esot yes -40c to 85c sot-23 7-in. reel, 3000 pieces/reel ss5782eua yes -40c to 85c to-92 bulk, 1000 pieces/bag SS5782KSOT yes -40c to 125c sot-23 7-in. reel, 3000 pieces/reel ss5782kua yes -40c to 125c to-92 bulk, 1000 pieces/bag ss5782lsot yes -40c to 150c sot-23 7-in. reel, 3000 pieces/reel ss5782lua yes -40c to 150c to-92 bulk, 1000 pieces/bag ?
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