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data sheet, rev 1.0, september 2007 TLE4946K high precision bipolar hall-effect latch sensors
edition 2007-09 published by infineon technologies ag 81726 mnchen, germany ? 2007 infineon technologies ag all rights reserved. legal disclaimer the information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any ex amples or hints given herein, any typi cal values stated herein and/or any information regarding the application of the device, infi neon technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies components may be used in life-suppo rt devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
TLE4946K revision history: 2007-09 rev 1.0 previous version: page subjects (major changes since last revision) we listen to your comments any information within this document that you feel is wrong, unclear or missing at all? your feedback will help us to continuousl y improve the quality of this document. please send your proposal (including a reference to this document) to: sensors@infineon.com
TLE4946K data sheet 1 rev 1.0, 2007-09 1overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 pin configuration (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 electrical and magnetic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.1 package marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.2 distance between chip and package surface . . . . . . . . . . . . . . . . . . . . . 10 7.3 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
type package TLE4946K sc59 high precision bipolar hall-effect latch TLE4946K sc59 sc59 data sheet 2 rev 1.0, 2007-09 1overview 1.1 features ?2.7 v to 24 v supply voltage operation ? operation from unregulated power supply ? high sensitivity and high st ability of the magnetic switching points ? high resistance to mechanical stress by active error compensation ? reverse battery protection (? 18 v) ? superior temperature stability ? peak temperatures up to 195c without damage ? low jitter (typ. 1 s) ? high esd performance ( 6 kv hbm) ? digital output signal ? smd package sc59 (sot23 compatible) 1.2 functional description the TLE4946K is a integrated circuit hall-effe ct sensor designed spec ifically for highly accurate applications. precise magnetic switching points and high temperature stability are achieved by active compensation circuits and chopper techniques on chip.
TLE4946K overview data sheet 3 rev 1.0, 2007-09 1.3 pin configuration (top view) center of sensitive area 1 0 .15 1.5 0. 15 0.8 2 3 sc59 figure 1 pin definition and center of sensitive area table 1 pin definitions and functions sc59 pin no. symbol function 1 v s supply voltage 2 q output 3 gnd ground
TLE4946K general data sheet 4 rev 1.0, 2007-09 2 general 2.1 block diagram figure 2 block diagram 2.2 circuit description the chopped hall ic switch comprises a hall probe, bias generator, compensation circuits, oscillator, and output transistor. the bias generator provides currents for the hall probe and the active circuits. compensation circuits stabilize the temperature behavior and reduce technology variations. the active error compensation rejects offs ets in signal stages and the influence of mechanical stress to the hall probe caus ed by molding and soldering processes and other thermal stresses in the package. this chopper technique toget her with the threshold gener ator and the comparator ensure high accurate magnetic switching points. ref chopped hall probe v s q gnd amplifier low pass filter comparator with hysteresis voltage regulator reverse polarity protected oscillator and sequencer bias and compensation circuits
TLE4946K maximum ratings data sheet 5 rev 1.0, 2007-09 3 table 2 absolute maximum ratings t j = ? 40c to 150c parameter symbol limit values unit conditions min. max. supply voltage v s ? 18 ? 18 ? 18 18 24 26 v for 1 h, r s 200 for 5 min, r s 200 supply current through protection device i s ? 50 + 50 ma output voltage v q ? 0.7 ? 0.7 18 26 v for 5 min @ 1.2 k pull up continuous output current i q ? 50 + 50 ma junction temperature t j ? ? ? ? 155 165 175 195 c for 2000 h (not additive) for 1000 h (not additive) for 168 h (not additive) for 3 x 1 h (additive) storage temperature t s ? 40 150 c magnetic flux density b ? unlimited mt maximum ratings note: stresses above thos e listed here may cause permanent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. table 3 esd protection 1) 1) human body model (hbm) tests according to: eos/esd association standard s5.1-1993 and mil. std. 883d method 3015.7 parameter symbol limit values unit notes min. max. esd voltage v esd ? 6 kv hbm, r = 1.5 k , c = 100 pf t a = 25c
TLE4946K operating range data sheet 6 rev 1.0, 2007-09 4 operating range table 4 operating range parameter symbol limit values unit conditions min. typ. max. supply voltage v s 2.7 ? 18 v output voltage v q ? 0.7 ? 18 v junction temperature t j ? 40 ? 150 c output current i q 0 ? 20 ma
TLE4946K electrical and magnetic parameters data sheet 7 rev 1.0, 2007-09 5 electrical and magnetic parameters table 5 electrical characteristics 1) . 1) over operating range, unless otherwise specified. typical values correspond to v s =12 v and t a = 25c parameter symbol limit values unit conditions min. typ. max. supply current i s 2 4 6 ma v s = 2.7 v ... 18 v reverse current i sr 0 0.2 1 ma v s = ? 18 v output saturation voltage v qsat ? 0.3 0.6 v i q = 20 ma output leakage current i qleak ? 0.05 10 a for v q = 18 v output fall time t f ? 0.02 1 s r l = 1.2 k ; c l = 50 pf see: figure 3 ?timing definition? on page 9 output rise time t r ? 0.4 1 s chopper frequency f osc ? 320 ? khz switching frequency f sw 0 ? 15 2) to operate the sensor at the max. switching frequency, the value of the magnetic signal amplitude must be 1.4 times higher than for static fields. this is due to the - 3 db corner frequency of the low pass filter in the signal path. 2) khz delay time 3) systematic delay between magnetic threshold reached and output switching 3) t d ? 13 ? s output jitter 4) jitter is the unpredictable devia tion of the output switching delay 4) t qj ? 1 ? s rms typical value for square wave signal 1 khz power-on time 5) time from applying v s 2.7 v to the sensor until the output state is valid 5) t pon ? 13 ? s v s 2.7 v thermal resistance 6) thermal resistance from junction to ambient 6) r thja ? 100 ? k/w sc59 calculation of the ambient temperature (sc59 example) e.g. for v s = 12.0 v, i styp = 4 ma, v qsattyp = 0.3 v and i q = 20 ma : power dissipation: p dis = 54.0 mw. in t a = t j ? ( r thja p dis ) = 175c ? (100 k / w 0.054 w) resulting max. ambient temperature: t a = 169.6c note: typical characteristics specify mean values expected over the production spread.
table 6 magnetic characteristics TLE4946K 1) parameter symbol t j [c] limit values unit notes min. typ. max. operate point b op ? 40 25 150 11.8 11.0 6.1 15.8 14.0 9.6 19.2 17.0 13.7 mt release point b rp ? 40 25 150 ? 19.2 ? 17.0 ? 13.7 ? 15.8 ? 14.0 ? 9.6 ? 11.8 ? 11.0 ? 6.1 mt hysteresis b hys ? 40 25 150 ? 22.0 ? ? 28.0 ? ? 34.0 ? mt magnetic offset b off ? 40 25 150 ? ? 3.0 ? ? ? ? ? 3.0 ? mt 2) b off = ( b op + b rp ) / 2 2) temperature compensation of magn. thresholds tc ? ? - 2000 ? ppm/c repeatability of magnetic thresholds 3) b rep is equivalent to the noise constant 3) b rep ? 20 ? t rms typ. value for b / t > 12 mt/ms TLE4946K electrical and magnetic parameters data sheet 8 rev 1.0, 2007-09 field direction definion positive magnetic fields related with so uth pole of magnet to the branded side of package. 1) over operating range, unless otherwise specified. typical values correspond to v s = 12 v.
TLE4946K timing diagram data sheet 9 rev 1.0, 2007-09 6 timing diagram figure 3 timing definition applied magnetic field 90% 10% v q t f t d t r t d b op b rp
TLE4946K package information data sheet 10 rev 1.0, 2007-09 7 package information 7.1 package marking aea03643 46 year (y) = 0...9 month (m) = 1...9, o - october n - novembe r d - decembe r y m figure 4 marking TLE4946K
TLE4946K package information data sheet 11 rev 1.0, 2007-09 7.2 distance between chip and package surface figure 5 distance chip sc59 to upper side of ic 7.3 package outlines 3 x 0.4 +0.05 -0.1 m 0.1 0.95 0.95 (0.55) 3 ?.1 +0.2 2.8 -0.1 0.15 max. 1.1 ?.1 0.2 +0. 1 +0.1 -0.05 0.15 0?...8? max. gps09473 0.45 ?.15 +0.15 -0.3 1.6 0.1 m 0.1 3 2 1 gps09473 figure 6sc59 aea0324 4 branded side d : distance chip to upper side of ic sc59: d 0.545 ?.05 mm
TLE4946K package information data sheet 12 rev 1.0, 2007-09 pcb footprint for sc59 the following picture shows a reco mmendation for the pcb layout. n figure 7 footprint sc59 (sot23 compatible) note: you can find all of our packages, sorts of packing and others in our infineon internet page ?products?: http://www.infineon.com/products. dimensions in mm reflow soldering wave soldering 0.8 0.8 1.2 0. 9 1. 3 0.9 0.8 0.8 1.2 1. 6 1. 4 min 1. 4 mi n
TLE4946K notes data sheet 13 rev 1.0, 2007-09
TLE4946K notes data sheet 14 rev 1.0, 2007-09
TLE4946K notes data sheet 15 rev 1.0, 2007-09
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