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390 1 00 0 062 rev 003 features and benefits 0 low cost 0 high sensitivity hall sensor 0 locked rotor protection and auto- r 0 power-efficient cmos and pow er 0 built-in output protection clampi ng 0 integrated tachometer (us62) or a signal protected output 0 2-coil fan driver with fg/rd outp ut 4-pin vk package rohs compli ant ordering code product code temperature code us63 e us62 e legend : temperature code: e for temperature range package code: vk for option code: xxx- 000: standard version packing form: bu for bulk ordering example: us63evk 1 functional diagram us 62 / two- c p a g e 1 of 11 r estart er mosfets ng diode a larm (us63) ut in ant application examp l 0 5/12v fans 0 peak current up to 700m a package code option code packing form code vk aaa-000 bu vk aaa-000 bu for temperature range -40c to 85c vk for plastic single in line 000: standard version bu for bulk us63evk -aaa-000-bu 2 general descript io the us62/63 is a one-chip sol u coil brushless dc cooling fans . based on the advanced melex i the ic contains a hall-effect s en offset correction and low side o frequency generator or rotat i available. the open-drain o utput connectivity with any external i nte hardware monitoring or super i/o these features are combined w patented no-v dd design to fit t h pin vk package. 62 / u s 63 c oil fan driver data s h e et apr/12 l es a packing form code bu bu io n u tion for driving two- . i s cmos process, en sor, dynamic o utput drivers. i on detection is utput makes easier the nterface such as i/o ic. w ith the melexis h e ic in a small 4-
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 2 of 11 data s h e et apr/12 table of contents 1 functional diagram .............................. ................................................... ....................... 1 2 general description ............................. ................................................... ........................ 1 3 glossary of terms ............................... ................................................... ........................ 3 4 absolute maximum ratings ........................ ................................................... ................ 3 5 pin definitions and descriptions ................ ................................................... ................ 3 6 general electrical specifications ............... ................................................... ................ 4 7 magnetic characteristics ........................ ................................................... .................... 4 8 driver output vs magnetic pole .................. ................................................... ................ 4 9 detailed general description .................... ................................................... .................. 5 10 unique features ................................ ................................................... ......................... 5 11 performance graphs ............................. ................................................... .................... 6 11.1 r dson vs t j ................................................... ................................................... ......... 6 11.2 r dson vs v dd ................................................... ................................................... ....... 6 11.3 magnetic parameters vs t j ................................................... .................................... 6 11.4 magnetic parameters vs v dd ................................................... .................................. 6 11.5 i dd vs v dd ................................................... ................................................... ............ 6 12 test conditions ................................ ................................................... .......................... 7 12.1 v dd ? operating ....................................... ................................................... ............... 7 12.2 r dson ................................................... ................................................... .................. 7 12.3 i dd ................................................... ................................................... ....................... 7 12.4 fg/rd output low voltage ..................... ................................................... .............. 7 13 application information......................... ................................................... .................... 8 13.1 typical application with pull-up resistor..... ................................................... ............. 8 13.2 configuration for reverse voltage / ground hot -switch protection .............................. 8 14 application comments ........................... ................................................... ................... 8 15 standard information regarding manufacturability of melexis products with different soldering processes...................... ................................................... .................. 9 16 esd precautions ................................ ................................................... ........................ 9 17 vk package information (4-pin to-92)............ ................................................... ....... 10 18 disclaimer...................................... ................................................... ........................... 11
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 3 of 11 data s h e et apr/12 pin name pin number function fg ( r d) 1 frequency generator ( ro t a t i on d e t e c t i on ) open d r a i n output s i gn a l o ut 1 2 open dr a i n co il dr i v e r 1 o ut 2 3 open dr a i n co il dr i v e r 2 g nd 4 ground p i n 3 glossary of terms two-coil fan a fan with two-coil windings where cur rent alternates from 1 coil to the other depending on the direction of the magnetic field. millitesla (mt), gauss units of magnetic flux densi ty : 1mt = 10 gauss v dd voltage on the common point of the fan coils. i dd current supplying the chip which flows through the coil connected to the switched off output driver. peak output current the current flowing in the coil at start-up, only limited by the coil resistance r coil and the output driver resistance r dson. continuous output current the current flowing in th e coil when the fan is spinning normally. locked rotor the state when the fan stopped spinnin g due to mechanical blockage. fg frequency generator or tachometer output rd rotation detection or alarm output lfpm linear feet per minute ? unit of airflow veloc ity 4 absolute maximum ratings parameter symbol value units fan s upp l y v o l t a g e v dd 18 v peak output cu rr e n t i o ut p 700 m a con t i nuou s output cu rr e n t i o ut c 250 m a op e r a t i ng temperature range t a -40 to 85 c j un c t i on temperature t j 125 c storage temperature range t s -55 to 150 c m a gn e t i c f l u x d e n s i ty b u n li m i t e d m t esd s e n s i t i v i ty (aec q100 002 ) - 2 k v table 1: absolute maximum ratings exceeding the absolute maximum ratings may cause pe rmanent damage. exposure to absolute-maximum- rated conditions for extended periods may affect de vice reliability. 5 pin definitions and descriptions table 2: pin definitions and descriptions us62 (us6 3)
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 4 of 11 data s h e et apr/12 a dd a dd 6 general electrical specifications dc operating parameters t = 25 o c, v = 5v to 12v (unless otherwise specified) parameter symbol test conditions min typ max unit s fan s upp l y v o l t a g e v dd op e r a t i ng ? r co i l = 50 3.2 ( 1 ) 18 v s upp l y cu rr e n t i dd 2 4 m a out1, out2 on r e s i s t a n c e r dson 1,2 v dd = 5 v 3.5 out1, out2 on r e s i s t a n c e r dson 1,2 v dd = 12 v 2.5 out1, out2 output c l a m p v o l t a g e v o ut 1,2 36 v fg / rd output low v o l t a g e v o l i ol = 10 m a 250 500 m v fg / rd output c l a m p v o l t a g e v c lm p 18 v fg / rd output l ea k a g e cu rr e n t i l e ak v fg (v rd ) = 18 v 10 a fg / rd output current l i m i t i fg l i m v fg (v rd ) = 12 v 20 m a package t h e r m a l r e s i s t a n c e r th on e - s i d e d pcb, zero l f p m 200 c /w a tt locked rotor p e r i od t o n 0.22 s locked rotor p e r i od t off 1.3 s output s w i t c h i ng d e l a y t d e lay ? d ea d t i m e ? when both d r i v e r s are o ff 100 us table 3: electrical specifications note 1: the minimal value of vdd should be determin ed using the following equation: v dd = 3v + r coil * i dd 7 magnetic characteristics dc operating parameters t = 25 o c, v = 12v (unless otherwise specified) parameter symbol test conditions min typ max units operate po i n t b o p 3 6 m t r e l ea s e po i n t b r p - 6 - 3 m t hy s t e r e s i s b h y s t 2 6 m t table 4: magnetic specifications 8 driver output vs magnetic pole parameter test conditions out1 out2 north po l e b < b r p h i gh l o w south po l e b > b o p l o w h i gh table 5: driver output vs magnetic pole note 1: the magnetic pole is applied facing the bra nded side of the package
390 1 00 0 062 rev 003 9 detailed general desc ri the us62/63 is a one-chip solution f or cmos process, the ic contains a ha ll the output drivers out1 and out2 a an external zener diode to cut the hi gh the us62 has an open-drain integrat e in the us63, the open-drain rotation de goes high when the flux switching fr equen 10 unique features the fg/rd output driver provides an while switched on. it can occur if a too this protection helps avoid eos dam age the absence of a v dd pin enables th e vk package. the lack of a v dd pin de connection, using the coil resistance t twice the peak current value of the f an the built-in locked-rotor protection au to blocked, or the rotational speed beco m of the shaft is allowed again. the on / prevent overheating or damage to m o us 62 / two- c p a g e 5 of 11 ri ption or driving two-coil brushless dc fans. based on adv an ll -effect sensor, dynamic offset correction and low s i d a re fully protected against switching transients. s o the gh voltage spikes induced by the fan coils. e d tachometer fg output that follows the hall signal . de tection output rd is active low during normal spi nn equen cy becomes too low, which means the motor is b over current protection limiting the current flowin g in too small pull-up resistor is used or if this resistor is s ho age on the fg/rd driver. e two low side output drivers and fg/rd signal out p de creases also the probability to damage the chip due t o limit the reverse current. in this condition, the tot a an used. to matically shuts off the coil current when the rotor i s m es too low. the fan tries to restart every 1.3 sec onds / off cycling reduces the average current to 1/7 nor m o st fans. 62 / u s 63 c oil fan driver data s h e et apr/12 an ced melexis d e output drivers. o the re is no need for . nn ing of the motor. it b locked. the fg/rd driver ho rt connected. p ut to fit in a four-pin due to reverse voltage a l reverse current is s mechanically onds until the rotation m al. it is enough to
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 6 of 11 data s h e et apr/12 bop, brp (mt) idd (ma) r d s o n ( o h m s ) b o p , b rp (m t ) rdson (ohms) 11 performance graphs 11.1 r dson vs t j 14 us62 / us63 11.2 r dson vs v dd 14 us62 / us63 12 12 10 10 vdd = 5v 8 vdd = 12v 8 6 6 rdson , tj = -40 c rdson , tj = 25 c rdson , tj = 125 c 4 4 2 2 0 -40 0 40 80 120 junction temperature ( c) 0 0 5 10 15 vdd 11.3 magnetic parameters vs t j 10 us62 / us63 11.4 magnetic parameters vs v dd 10 us62 / us63 8 bop, vdd = 5v 8 bop, vdd = 12v 6 brp, vdd = 5v 6 brp, vdd = 12v 4 4 bop, tj = 25 c bop, tj = 125 c brp, tj = 25 c brp, tj = 125 c 2 2 0 0 -2 -2 -4 -4 -6 -6 -8 -8 -10 -40 0 40 80 120 junction temperature ( c) -10 0 5 10 15 vdd 11.5 i dd vs v dd 4 3.5 3 2.5 tj = 25 c 2 1.5 1 0.5 0 0 5 10 15 vdd
390 1 00 0 062 rev 003 12 test conditions 12.1 v dd ? operating 12.3 i dd us 62 / two- c p a g e 7 of 11 12.2 r dson 12.4 fg/rd output low v ol 62 / u s 63 c oil fan driver data s h e et apr/12 ol tage
390 1 00 0 062 rev 003 13 application informati o 13.1 typical application wit h pull resistor 14 application commen ts figure 13.2 shows the application inc l the diode d revprot best protects the c the capacitor c bypass is recomm ended the positive supply point is still conn e in the coil which has to be evacuate d. without any limitation and may cause e its value has to be tuned depending o the optional capacitor c filter suppre ss us 62 / two- c p a g e 8 of 11 o n h pull -up 13.2 configuration for r eve ground hot-switc h pro ts l uding several external protections. c hip and fan coils for reverse voltage condition. ended if the supply ground may be disconnected while e cted. this capacitor provides a path to ground for the d. without it, the energy can flow from out1/out2 e os damage. o n the coils characteristics. bigger inductance requ i r ss es wire disturbances on the fg/rd output line. 62 / u s 63 c oil fan driver data s h e et apr/12 eve rse voltage / h pro tection running even though the remaining energy to the fg/rd driver, r es bigger capacitor.
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 9 of 11 data s h e et apr/12 15 standard information regarding manufacturability of melexis products with different soldering processes our products are classified and qualified regarding soldering technology, solderability and moisture s ensitivity level according to following test methods: reflow soldering smds (s urface m ount d evices) ? ipc/jedec j-std-020 moisture/reflow sensitivity classification for nonh ermetic solid state surface mount devices (classification reflow profiles according to table 5-2) ? eia/jedec jesd22-a113 preconditioning of nonhermetic surface mount device s prior to reliability testing (reflow profiles according to table 2) wave soldering smds (s urface m ount d evices) and thds (t hrough h ole d evices) ? en60749-20 resistance of plastic- encapsulated smds to combin ed effect of moisture and soldering heat ? eia/jedec jesd22-b106 and en60749-15 resistance to soldering temperature for through-hol e mounted devices iron soldering thds (t hrough h ole d evices) ? en60749-15 resistance to soldering temperature for through-hol e mounted devices solderability smds (s urface m ount d evices) and thds (t hrough h ole d evices) ? eia/jedec jesd22-b102 and en60749-21 solderability for all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature prof ile etc) additional classification and qualificatio n tests have to be agreed upon with melexis. the application of wave soldering for smds is allo wed only after consulting melexis regarding assuran ce of adhesive strength between device and board. melexis is contributing to global environmental con servation by promoting lead free solutions. for more information on qualifications of rohs compliant products (rohs = european directive on t he restriction of the use of certain hazardous substances) please visit t he quality page on our website: http://www.melexis.com/quality.aspx
390 1 00 0 062 rev 003 16 esd precautions electronic semiconductor products ar e always observe electro static discha r 17 vk package informati o us 62 / two- c p a g e 10 of 11 e sensitive to electro static discharge (esd). r ge control procedures whenever handling semic ondu o n 62 / u s 63 c oil fan driver data s h e et apr/12 ondu ctor products.
us 62 / u s 63 two-coil fan driver 390 1 00 0 062 rev 003 p a g e 11 of 11 data s h e et apr/12 18 disclaimer devices sold by melexis are covered by the warranty and patent indemnification provisions appearing in its term of sale. melexis makes no warranty, express, s tatutory, implied, or by description regarding the information set forth herein or regarding the freed om of the described devices from patent infringemen t. melexis reserves the right to change specifications and prices at any time and without notice. therefo re, prior to designing this product into a system, it is nece ssary to check with melexis for current information . this product is intended for use in normal commercial ap plications. applications requiring extended tempera ture range, unusual environmental requirements, or high reliability applications, such as military, medical life- support or life-sustaining equipment are specifical ly not recommended without additional processing by melexis for each application. the information furnished by melexis is believed to be correct and accurate. however, melexis shall no t be liable to recipient or any third party for any dama ges, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequ ential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the t echnical data herein. no obligation or liability to recipien t or any third party shall arise or flow out of mel exis rendering of technical or other services. ? 2012 melexis nv. all rights reserved. for the latest version of this document, go to our website at www.melexis.com or for additional information contact melexis direc t: europe, africa, asia: america: phone: +32 1367 0495 phone: +1 248 306 5400 e-mail: sales_europe@melexis.com e-mail: sales_usa @melexis.com iso/ts 16949 and iso14001 certified

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