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sensors datasheet rev 1.0, 2010-12 TLE4906-2K high precision hall-effect switch
edition 2010-12 published by infineon technologies ag 81726 munich, germany ? 2010 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l 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 compon ents may be used in life-su pport 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 safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/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.
datasheet 1 rev 1.0, 2010-12 TLE4906-2K TLE4906-2K high precision hall effect switch revision history: 2010-12, rev 1.0 previous version: page subjects (major change s since last revision) we listen to your comments any information within this do cument that you feel is wro ng, unclear or missing at all? your feedback will help us to continuous ly improve the qualit y of this document. please send your proposal (including a reference to this document) to: sensors@infineon.com
TLE4906-2K table of contents datasheet 2 rev 1.0, 2010-12 1 product description 3 1.1 overview 3 1.2 features 3 1.3 target applications 3 2 functional description 4 2.1 general 4 2.2 pin configuration (top view) 4 2.3 pin description 4 2.4 block diagram 5 2.5 functional block description 5 2.6 application circuit 7 3 specification 8 3.1 absolute maximum ratings 8 3.2 operating range 9 3.3 electrical and magnetic characteristics 10 4 package information 12 4.1 package outline 12 4.2 distance between chip and package 13 4.3 package marking 13 table of contents
product name product type ordering code package TLE4906-2K unipolar hall switch sp000868840 sc59 high precision hall-effect switch TLE4906-2K datasheet 3 rev 1.0, 2010-12 1 product description 1.1 overview the TLE4906-2K is a high precision hall effect switch with highly accurate switching thresholds for operating temperatures up to 150c. 1.2 features ? 2.7v to 24v supply voltage ? operation from unregulated power supply ? high sensitivity and high stability of the magnetic switching points ? high resistance to mechanical stress by active error compensation ? reverse battery protection (-18v) ? superior temperature stability ? low jitter (typ. 1s) ? high esd performance ( 4kv hbm) ? digital output signal ? smd package sc59 (sot23 compatible) 1.3 target applications target applications for TLE4906-2K are all automotive app lications which require a high precision hall switch for position sensing with a operating temperature range from -40c to +150c. the TLE4906-2K is a unipolar hall switch which is actuated with the south pole of a magnet. a magnetic field above the threshold b op switches the output to low (output transistor on) and a magnetic field below the release point b rp back to high (transistor off).
datasheet 4 rev 1.0, 2010-12 TLE4906-2K functional description 2 functional description 2.1 general the TLE4906-2K is an integrated circuit hall-effect sensor designed specifically for highly accurate applications. precise magnetic switching points and hi gh temperature stabilit y are achieved by active compensation circuits and chopper techniques on chip. 2.2 pin configuration (top view) figure 1 pin configuration and center of sensitive area 2.3 pin description table 1 pin description sc59 pin no. symbol function comment 1v dd supply voltage 2 q output 3 gnd ground center of sensitive area 1 0 .15 1.5 0.15 0.8 2 3 sc59
datasheet 5 rev 1.0, 2010-12 TLE4906-2K functional description 2.4 block diagram figure 2 functional block diagram 2.5 functional block 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 circui ts. compensation circuits stabilize the temperature behavior and reduce technology variations. the active error compensation rejects offsets in signal stages and the influence of mechanical stress to the hall probe caused by molding and soldering processes and other thermal stresses in the package. this chopper technique together with the threshold generator and the comparator ensure high accurate magnetic switching points. ref chopped hall probe v dd q gnd amplifier low pass filter comparator with hysteresis voltage regulator reverse polarity protected oscillator and sequencer bias and compensation circuits
datasheet 6 rev 1.0, 2010-12 TLE4906-2K functional description figure 3timing diagram figure 4 output signal applied magnetic field 90% 10% v q t f t d t r t d b op b rp v q b op b rp 0 b
datasheet 7 rev 1.0, 2010-12 TLE4906-2K functional description 2.6 application circuit it is recommended to use a series resistor r s with 200 and a capacitor of c dd = 4.7nf for protection against overvoltage and transients on the supply line. a capacitor c q at the q pin protects the ic from disturbances coupled to the output. a pull-up resistor r q is also required fo r the output pin q. figure 5 application circuit TLE4906-2K gnd vs r q = 1.2k c dd = 4.7nf r s = 200 v dd q c q = 4.7nf
datasheet 8 rev 1.0, 2010-12 TLE4906-2K specification 3 specification 3.1 absolute maximum ratings note: stresses above the ma x. values listed here may cause permane nt damage to the device. exposure to absolute maximum rating conditions for extended period s may affect device reliab ility. maximum ratings are absolute ratings; exceeding only one of these values ma y cause irreversible damage to the integrated circuit. table 2 absolute maximum rating parameters t j = -40c to 150c parameter symbol limit values unit note / test condition min. max. supply voltage v dd v s v s -18 -18 -18 18 24 26 v for 1h, r s 200 for 5min, r s 200 supply current through protection device i dd -50 50 ma output voltage v q -0.7 -0.7 18 26 v for 5min @ 1.2k pull up continuous output current i q -50 50 ma junction temperature t j ? ? ? ? 155 165 175 195 c for 2000h (not additive) for 1000h (not additive) for 168h (not additive) for 3 x 1h (additive) storage temperature t s -40 150 c magnetic flux density b ? unlimited mt table 3 esd protection 1) 1) human body model (hbm) tests according to: eos/esd a ssociation standard s5.1-1993 and mil. std. 883d method 3015.7 parameter symbol limit values unit note / test condition min. max. esd voltage v esd 4 kv hbm, r = 1.5k , c = 100pf t a = 25c
datasheet 9 rev 1.0, 2010-12 TLE4906-2K specification 3.2 operating range the following operating conditions must not be exceeded in order to ensure correct operation of the TLE4906-2K . all parameters specified in the followi ng sections refer to these operating conditions unless otherwise mentioned. table 4 operating conditions parameters parameter symbol values unit note / test condition min. typ. max. supply voltage v dd 2.7 18 v output voltage v q -0.7 18 v junction temperature t j -40 150 c output current i q 020ma
datasheet 10 rev 1.0, 2010-12 TLE4906-2K specification 3.3 electrical and magnetic characteristics product characteristics involve the spread of values guaranteed within the specified voltage and ambient temperature range. typical characteristics are the median of the production. calculation of the ambient temperature: e.g. for v dd = 12.0v, i ddtyp = 4ma, v qsattyp = 0.3v and i q = 20ma power dissipation p dis = 54.0mw in t a = t j - (r thja x p dis ) = 175c - (100k/w x 0.054w) resulting max. ambient temperature: t a = 169.6c table 5 general electrical characteristics 1) 1) over operating range, unless otherwise specified. typical values correspond to v dd = 12v and t a = 25c parameter symbol values unit note / test condition min. typ. max. supply current i dd 246mav dd = 2.7v ... 18v reverse current i sr 00.21mav dd = -18v output saturation voltage v qsat -0.30.6vi q = 20ma output leakage current i qleak -0.0510afor v q = 18v output fall time t f -0.021sr q = 1.2k ; c q = 50pf see figure 3 output rise time t r -0.41s chopper frequency f osc -320-khz switching frequency f sw 0-15 2) 2) to operate the sensor at the max. switching frequency, the value of the m agnetic signal amplitude must be 1.4 times higher than for static fields. this is due to the -3db corner frequency of the low pass filter in the signal path. khz delay time 3) 3) systematic delay between magnetic threshold reached and output switching. t d -13-s output jitter 4) 4) jitter is the unpredictable devia tion of the output switching delay. t qj -1-s rms typical value for square wave signal with 1khz power-on time 5) 5) time from applying v dd 2.7v to the sensor unt il the output state is valid. t pon -13-sv dd 2.7v thermal resistance 6) 6) thermal resistance from junction to ambient. r thja -100-k/wsc59
datasheet 11 rev 1.0, 2010-12 TLE4906-2K specification note: typical characteristics specify mean values expecte d over the production spread field directio n definition positive magnetic fields are defi ned with the south pole of the magne t to the branded side of package. figure 6 definition of magnetic field direction table 6 magnetic characteristics 1) 1) over operating range, unless otherwise specified. typical values correspond to v dd = 12v and t a = 25c. parameter symbol t j [c] values unit note / test condition min. typ. max. operating point b op -40 25 150 13.5 12.5 10.4 19.4 18.0 15.3 25.3 23.5 20.2 mt release point b rp -40 25 150 9.1 8.4 6.9 13.5 12.5 10.6 17.9 16.6 14.3 mt hysteresis b hys -40 25 150 4.4 4.1 3.5 5.9 5.5 4.7 7.4 6.9 5.9 mt temperature compensation of magnetic thresholds t c - -1200 - ppm/c repeatability of magnetic thresholds 2) 2) b rep is equivalent to the noise constant b rep -20-t rms typ. value for b/ t > 12mt/ms branded side n s
datasheet 12 rev 1.0, 2010-12 TLE4906-2K package information 4 package information 4.1 package outline figure 7 sc59 package outline (all dimensions in mm) the following picture shows a recommendation for the pcb layout. figure 8 sc59 footprint (sot23 compatible, all dimensions in mm) 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 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 min
datasheet 13 rev 1.0, 2010-12 TLE4906-2K package information 4.2 distance between chip and package figure 9 distance between chip and package sc59 4.3 package marking figure 10 marking of TLE4906-2K aea03244 branded side d: distance chip to upper side of ic sc59 : d 0.56 0.1 mm 062 year (y) = 0 ...9 month ( m) = 1...9 , o - october n - november d - december y m
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