tsh251 micropower cmos output hall effect switch 1/8 version: a13 to - 92 s ts o t - 23 description tsh251 hall-effect sensor is a temperature stable, stress-resistant, low tolerance of sensitivity micr o-power switch. superior high-temperature performance is ma de possible through a dynamic offset cancellation t hat utilizes chopper-stabilization. this method reduces the offset voltage normally caused by device over molding, temperature dependencies, and thermal stress. tsh25 1 is special made for low operation voltage, 1.65v, to active the chip which is includes the following on a single silicon chip: voltage regulator, hall volt age generator, small-signal amplifier, chopper stabilization, schm itt trigger, cmos output driver. advanced cmos wafe r fabrication processing is used to take advantage of low-voltage requirements, component matching, very low input-offset errors, this device requires the prese nce of omni-polar magnetic fields for operation. features cmos hall ic technology strong rf noise protection 1.65 to 3.5v for battery-powered applications omni polar, output switches with absolute value of north or south pole from magnet operation down to 1.65v, micropower consumption high sensitivity for reed switch replacement applications low sensitivity drift in crossing of temp. range ultra low power consumption at 5ua (avg) high esd protection, hbm > 4kv( min ) totem-pole output ordering information part no. package packing TSH251CT b0g to-92s 1kpcs / bulk bag tsh251cx rfg tsot-23 3kpcs / 7 reel note: g denote for halogen free product application solid state switch handheld wireless handset awake switch (flip cell/phs phone/note book/flip video set) lid close sensor for battery powered devices magnet proximity sensor for reed switch replacement in low duty cycle applications water meter, floating meter absolute maximum rating (ta = 25 o c unless otherwise noted) characteristics limit value unit supply voltage v dd 4.5 v output voltage v out 4.5 v reverse voltage v dd /out -0.3 v magnetic flux density unlimited gauss output current i out 1 ma operating temperature range t opr -40 to +85 o c storage temperature range t stg -65 to +150 o c maximum junction temp t j 150 o c thermal resistance - junction to ambient to-92s ja 206 o c/w tsot-23 543 thermal resistance - junction to case to-92s jc 148 o c/w tsot-23 410 package power dissipation to-92s p d 606 mw tsot-23 230 note: exceeding the absolute maximum ratings may cause p ermanent damage. exposure to absolute maximum- rated conditions for extended periods may affect de vice reliability. p in definition : 1. v cc 2. gnd 3. output pin definition : 1. v cc 2. output 3. gnd downloaded from: http:///
tsh251 micropower cmos output hall effect switch 2/8 version: a13 c1 10nf c2 100pf block diagram note: static sensitive device; please observe esd precau tions. reverse vdd protection is not included. for reverse voltage protection, a 100 ? resistor in series with vdd is recommended. typical application circuit electrical specifications ( dc operating parameters t a =+25 o c,v dd =1.8v) parameters test conditions min typ max units supply voltage operating 1.65 -- 3.5 v supply current awake state -- 1.4 3 ma sleep state -- 3.6 7 a average -- 5 10 a output leakage current output off -- -- 1 ua output high voltage iout=0.5ma(source) vdd-0.2 -- -- v output low voltage iout=0.5ma(sink) -- -- 0.2 v awake mode time operating -- 40 80 us sleep mode time operating -- 40 80 ms duty cycle -- 0.1 -- % electro-static discharge hbm 4 kv downloaded from: http:///
tsh251 micropower cmos output hall effect switch 3/8 version: a13 magnetic specifications (TSH251CT) parameter symbol test conditions min. typ. max. units operating point b ops s pole to branded side, b > b op , vout on 30 55 gauss b opn n pole to branded side, b > b op , vout on -55 -30 gauss release point b rps s pole to branded side, b < b rp , vout off 10 20 gauss b rpn n pole to branded side, b < b rp , vout off -20 -10 gauss hysteresis b hys |b op x - b rp x| 10 gauss note: 1g (gauss) = 0.1mt (millitesta) magnetic specifications (tsh251cx) parameter symbol test conditions min. typ. max. units operating point b ops n pole to branded side, b > b op , vout on 30 55 gauss b opn s pole to branded side, b > b op , vout on -55 -30 gauss release point b rps n pole to branded side, b < b rp , vout off 10 20 gauss b rpn s pole to branded side, b < b rp , vout off -20 -10 gauss hysteresis b hys |b op x - b rp x| 10 gauss note: 1g (gauss) = 0.1mt (millitesta) output behavior versus magnetic pole dc operating parameters: t a = -40 to 125 o c, v cc = 1.8v ~ 6v parameter test condition out south pole bbop(55~10) low to-92s sot-23 downloaded from: http:///
tsh251 micropower cmos output hall effect switch 4/8 version: a13 characteristic performance figure 1. supply voltage vs. flux density figure 2. temperature vs. flux density figure 3. supply current vs. temperature figure 4. supply current vs. supply voltage figure 5. output saturation voltage vs. supply voltage figure 6. output saturation voltage vs. temperature downloaded from: http:///
tsh251 micropower cmos output hall effect switch 5/8 version: a13 characteristic performance figure 7. output leakage current vs. supply voltage figure 8. power dissipation vs. temperature downloaded from: http:///
tsh251 micropower cmos output hall effect switch 6/8 version: a13 to-92s mechanical drawing unit: millimeters marking diagram 251 = device code y = year code (3=2013, 4=2014.) ww = week code (01~52) downloaded from: http:///
tsh251 micropower cmos output hall effect switch 7/8 version: a13 tsot-23 mechanical drawing unit: millimeters marking diagram 251 = device code ww = week code table week 1 2 3 4 5 6 7 8 9 10 11 12 13 code oa ob oc od oe of og oh oi oj ok ol om week 14 15 16 17 18 19 20 21 22 23 24 25 26 code on oo op oq or os ot ou ov ow ox oy oz week 27 28 29 30 31 32 33 34 35 36 37 38 39 code pa pb pc pd pe pf pg ph pi pj pk pl pm week 40 41 42 43 44 45 46 47 48 49 50 51 52 code pn po pp pq pr ps pt pu pv pw px py pz downloaded from: http:///
tsh251 micropower cmos output hall effect switch 8/8 version: a13 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tscs terms and co nditions of sale for such products, tsc assumes no liability wh atsoever, and disclaims any express or implied warr anty, relating to sale and/or use of tsc products includi ng liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, cop yright, or other intellectual property right. the products shown herein are not designed for use in medical, life-saving, or life-sustaining applica tions. customers using or selling these products for use i n such applications do so at their own risk and agr ee to fully indemnify tsc for any damages resulting from such i mproper use or sale. downloaded from: http:///
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