datasheet v1.0a 1/6 TMR1303 tmr omnipolar switch general description TMR1303 is a digital omnipolar magnetic switch that integrates tmr and cmos technology in order to provide a magnetically triggered digital switch with hi gh sensitivity, high speed, and ultra-low power consumption. it is designed for use in applica tions that are both power-critical and performance-demanding. it cont ains a push-pull half-bridge tmr magnetic sensor and cmos signal processing circuitry within the same package, including an on-chip tmr voltage generator f or precise magnetic sensing, a tmr voltage amplifier and comparator plus a schmitt trigger to provide switching hysteresis f or noise rejection, and cmos push-pull output. an internal band gap regulator is used to pro vide a temperature compensated supply voltage for internal circ uits, permitting a wide range of supply voltages. the TMR1303 draws o nly 1.5a resulting in ultra-low power operation. it has fast response, accurate switching points, excellent thermal stabilit y, and immunity to stray field interference. it is available in the sot23-3 , to92s and lga 3l 2x1.5x0.63 package. features and benefits ? tunneling magnetoresist ance (tmr) technology ? ultra low power consumption at 1.5ua ? high frequency response > 1khz ? operation with north or south pole ? low swiching points for high sensitivity ? compatible with a wide range of supply voltages ? excellent thermal stability ? high tolerance to external magnetic field interference applications ? utility meters including water, gas, and heat meters ? proximity switches ? position and speed sensing ? motor and fan control TMR1303s(left), TMR1303t(right) TMR1303g
datasheet v1.0a 2/6 block diagram pin configuration pin name pin no. pin function to-92s sot23-3 lga3l v out 1 2 2 output gnd 2 3 1 ground v cc 3 1 3 supply voltage sot23-3 to-92s lga3l 2x1.5x0.63 absolute maximum ratings parameter symbol limit unit supply voltage v cc 7 v reverse supply voltage v rcc 0.3 v output current i outsink 9 ma magnetic flux density b 2800 g esd level(hbm) v esd 2 kv operating ambient temperature t a -40 ~125 c storage temperature t stg -50 ~ 150 c electrical characteristics (v cc =3.0v, t a =25 c ) parameter symbol conditions min typ. max unit supply voltage v cc operating 1.5 3.0 5.5 v output high voltage v oh vcc-0.3 vcc v output low voltage v ol 0 0.2 v supply current i cc output open 1.5 a response frequency f 1000 hz note: a?100nf?capacitor?is?connected?between? v cc ?and?gnd?during?all?tests?in?the?above?table.?
datasheet v1.0a 3/6 magnetic characteristics (v cc = 3.0v, t a = 25 c ) parameters symbol min typ. max units operate point b ops 35 g b opn -35 g release point b rps 22 g b rpn -22 g hysteresis b h 13 g voltage and temperature characteristics output behavior vs. magnetic pole parameter test conditions output south pole b > b ops low (on) 0< b < b rps high (off) north pole b < b opn low (on) 0 > b > b rpn high (off) note: when power is turned on under zero magnetic field, the output is high. sensing direction of magnetic field magnetic flux
datasheet v1.0a 4/6 application information the output of the TMR1303 switches low (turns on) when a magnet ic field to the sensing axis exceeds the operate poin t threshold, b op . when the magnetic field is reduced below the release point, b rp , the device output switches high (turns off). the difference between the b op and b rp is the hysteresis b h of the device. it is strongly recommen ded that an external b ypass capacitor be connected in close proximity to the device between t he supply and g round pins to r educe noise. the recommended value for the extern al bypass capacitor is 0.1f. package information sot23-3 package drawing to-92s package drawing
datasheet v1.0a 5/6 lga3l package drawing tmr sensor position top view and side view (unit: mm)
datasheet v1.0a 6/6 multidimension technology co., ltd. address:no.7 guangdong road, zhangjiagang free trade zone, jian gsu, 215634, china web: www.dowaytech.com/en email: info@dowaytech.com the information provided herein by multidimension technology co ., ltd. (hereinafter multidimensi on) is believed to be accurate and reliable. publication neither conveys nor implies any license under paten t or other industrial or intellec tual property rights. multidim ension reserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. multidimension does not assume any liability arising out of the application and use of its products. multidimensions cu stomers using or selling this product for use in appliances, devices, or systems where malfunction can reasonabl y be expected to result in personal injury do so at their own r isk and agree to fully indemnify multidimensi on for any damages resulting from s uch applications.
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