ds-mx887p - august 10, 2009 www.clare.com 1 rohs 2002/95/ec e 3 pb features ? power operation (15 w typical at 25c) ? omnipolar (switches with n or s pole) ? 2.5v to 5.5v operation ? cmos push-pull output ? ultra low offset canceling amplifiers provide sensitive, accurate, stable switching points and immunity to mechanical stress ? solid state reliability ? operating temperature range: -40c to +85c ? rohs compliant tsot-23 3-lead package applications ? handheld portable devices ? white goods ? automotive - body systems ? security systems ? high reliability reed switch replacement description the mx887p integrated hall-effect switch targets the requirements of low-power portable devices with battery operating voltages from 2.5v to 5.5v. on-chip power management circuitry reduces the effective average current to just 5 a at v supply = 3v dc . the switch output will transition to the ground potential when either a north or south magnetic pole is applied. the removal of a magnetic field will transition the switch to the v supply potential. emulating the behavior of a traditional reed switch, together with the advantages of high integration and solid state reliability, makes the mx887p an ideal replacement in low-power portable device applications. ordering information figure 1. functional block diagram part description MX887PHTTR tsot-23 3l tape & reel (3000/reel) hall sensor offset cancellation output latch v supply output switch power management logic 1 2 3 mx887p power hall-effect switch
mx887p august 10, 2009 www.clare.com 2 1. specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 package pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.5 esd rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.6 magnetic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. circuit description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. manufacturing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 mechanical dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
mx887p august 10, 2009 www.clare.com 3 1 specifications 1.1 package pinout 1.2 pin description 1.3 absolute maximum ratings absolute maximum electrical ratings are at 25c. absolute maximum ratings are stress ratings. stresses in excess of these ratings can cause permanent damage to the device. functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. 1.4 electrical characteristics over operating voltage and temperature range unless otherwise specified. notes: 1. b opx = operating point (output turns on); b rpx = release point (output turns off). 2. typical data is at 25c and v supply = 3v. 12 3 pin# name description 1 v supply 2.5v to 5.5v 2out push-pull cmos output 3 ground ground parameter symbol min max units supply voltage v supply -0.5 6 v dc output voltage v out -0.5 6 v magnetic flux density b - unlimited g output current - - 5 ma junction temperature t j -150 c operating ambient temperature t a -40 85 storage temperature t stg -40 150 parameter conditions symbol minimum typical maximum units supply voltage range operating v supply 2.5 - 5.5 v dc output leakage current v out =5.5v, b rpn < b < b rps i lkg --1 a output on voltage i out =1ma, v dd =3.0v v out -100300mv awake time - ---90 s period - ---90ms duty cycle - --0.1-% supply current awake (enabled) i supply --2ma asleep (disabled) --8 a average (calculated) -515 a
mx887p 4 www.clare.com august 10, 2009 1.5 esd rating 1.6 magnetic characteristics over operating voltage and temperature range unless otherwise specified. notes: 1. as used here, negative flux densities are defined as less than zero (algebraic convention); -50g<+10g. 2. b opx = operating point (output turns on); b rpx = release point (output turns off). 3. typical data is at 25c and v supply = 3v. 2 circuit description the mx887p power hall-effect switch consists of a hall element, small-signal amplifier, latch, and cmos push-pull output. offset canc ellation circuitry rejects errors in signal stages and the influence of mechanical stress on the hall element. this technique, together with a precision threshold generator and comparator, produces highly accurate magnetic switch points. the hall element is activated for a small fraction of an operating cycle, then latched in that sample state for the remainder of the period. by using this technique, very low power consumption is achieved. esd rating (human body model) 2000v parameter conditions symbol minimum typical maximum units operating points due to north pole applied north pole to branded side b opn -60 - - g due to south pole applied south pole to branded side b ops --60 release points due to north pole applied north pole to branded side b rpn ---6 g due to south pole applied south pole to branded side b rps 6- - hysteresis | b opx - b rpx | b hys -5-g
mx887p august 10, 2009 www.clare.com 5 3 manufacturing information 3.1 mechanical dimensions 3.1.1 tsot23 3-lead package 3.1.2 tape & reel packaging dimensions mm mi n / mm max (inches mi n / inches max) recommended pcb land pattern 2.60 / 3.00 (0.102 / 0.11 8 ) 0.10 / 0.25 (0.004 / 0.010) 0.37 / 0.47 (0.015 / 0.019) 2. 8 0 / 3.00 (0.110 / 0.11 8 ) 0.75 / 0.90 (0.030 / 0.035) 0.95 bsc (0.037 bsc) 1.50 / 1.70 (0.059 / 0.067) 0.35 / 0.51 (0.014 / 0.020) 0.00 / 0.10 (0.000 / 0.004) 0.70 / 0. 8 0 (0.02 8 / 0.031) 1.90 bsc (0.074 8 bsc) 0.60 ref (0.0236 ref) gauge pla n e 0.25 bsc (0.009 8 bsc) 0.10 mi n (0.004 mi n ) 5o n om 7o n om 0o / 8 o 1 2 3 1.05 (0.041) 2.70 (0.106) 0.95 (0.037) 0.60 (0.024) n otes: (unless other w ise specified) 1. dimension ?d? does not incl u de mold flash, protr u sions, or gate bu rrs. mold flash, protr u sions, and gate bu rrs shall not exceed 0.10mm (0.004 inches) per side. 2. dimension ?e? does not incl u de inter-lead flash or protr u sions. inter-lead flash and protr u sions shall not exceed 0.15mm (0.006 inches) per side. 3. package top may b e smaller than package b ottom. dimensions ?d? and ?e1? are determined at the o u termost extreme of the plastic b ody excl u ding mold flash, tie b ar bu rrs, gate bu rrs, and interlead flash, bu t incl u ding any mismatch b et w een top and b ottom of the plastic b ody. note: tape dimensions not sho w n comply w ith jedec standard eia-4 8 1-2 em b ossment em b ossed carrier top co v er tape thickness 0.066 max. (0.003 max.) 17 8 dia. (7.01 dia.) dimensions mm (inches) k 0 =1.1 0.1 (0.043 0.004) p=4.0 0.1 (0.157 0.004) a o =3.2 0.1 (0.126 0.004) b o =3.2 0.1 (0.126 0.004) w = 8 .0 0.2 (0.315 0.00 8 ) p=4.0 0.1 (0.157 0.004) 2.0 0.05 (0.079 0.002) 1.75 0.1 (0.069 0.004) ?1.5, +0.1, -0 (?0.059, +0.004, -0) 3.5 0.05 (0.13 8 0.002) ?1.1 0.1 (0.043 0.004) 0.25 0.05 (0.001 0.002)
mx887p 6 www.clare.com august 10, 2009 3.2 soldering for proper assembly, the component must be processed in accordance with the current revision of ipc/jedec standard j-std-020. failure to follow the recommended guidelines may cause permanent damage to the device resulting in impaired performance and/or a reduced lifetime expectancy. 3.3 washing clare does not recommend ultrasonic cleaning or the use of chlorinated hydrocarbons. rohs 2002/95/ec e 3 pb for additional information please vi sit our website at: www.clare.com clare, inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this publica tion and reserves the right to make changes to specifications and product descriptions at any time without notice. neither circuit patent licenses nor indemnity are expressed or implied. except as set forth in clare?s standard terms and conditions of sale, clare, inc. assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. the products described in this document are not designed, intended, authorized or warranted for use as components in systems in tended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of clare?s product may result in direct physical harm, i njury, or death to a person or severe property or environmental damage. clare, inc. reserves the right to discontinue or ma ke changes to its products at any time without notice. specification: ds-mx887p-august 10, 2009 ?copyright 2009, clare, inc. all rights reserved. printed in usa. 8/10/09
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