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mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 1 of 14 da t as h ee t apr/13 features and benefits 1-chip solution (hall element + output drivers) soft switching for low noise active slope control without external components automatically adapts slope to rotation speed two-stage thermal protection locked rotor protection and auto-restart tachometer open drain output (MLX90285-fg) alarm open drain output (MLX90285-rd) available in 4-pin through-hole vk (no-v dd design) and surface mount soic8, all green compliant pack age pin-to-pin compatible with us90a & us91a application examples 24v two-coil design cooling fans office automated equipment (printers) brown-goods (dvd player) home appliances (rice cooker) automotive climate control fan car audio cooling fan ordering code product code temperature code package code option code packing f orm code MLX90285 l vk aba-000 bu MLX90285 l vk aaa-000 bu MLX90285 l dc aba-000 re MLX90285 l dc aaa-000 re legend: temperature code: l for temperature range -40c to 150c package code: vk for plastic single in line dc for soic150 option code: aaa-000 for frequency ge neration, aba-000 for rotation detection packing form: bu for bulk, re for reel (live bug) ordering example: MLX90285lvk-aba-000-bu 1 functional diagram out1 out2 2 general description the MLX90285 is a one-chip solution for driv ing two-coil brushless dc cooling fans. power output driver power output driver slope control level shifter hall plate hv clamp b op /b rp comp no-vdd system voltage regulator crossover detection hv clamp dac slope control level shifter the device features soft switching to lower acousti c and electrical fan noise. this efficient solution is en hanced with an intelligent active slope control which automatica lly adjusts the slope duration depending on the fan rotation sp eed. thus, the fan performance to noise ratio is always kept o ptimum without the need of tuning via external component. power-on reset offset cancellation digital core locked rotor reference bias supply voltage the device includes a novel two-stage thermal prote ction as well as locked rotor protection for demanding application oscillator protection output control digital slope control register track & hold logic driver fg/rd safety requirements. frequency generator or rotation detection is availa ble. the two-stage thermal protection test control clock generator gnd open-drain output makes the connectivity with any e xternal interface for hardware monitoring easier. these features are combined with the melexis patent ed no- v dd design to fit the ic in small 4-pin vk package. the device is also delivered in dc package for automatic assembly.
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 2 of 14 da t as h ee t apr/13 table of contents 1 functional diagram............................... ................................................... ................................................... .. 1 2 general description.............................. ................................................... ................................................... ... 1 3 glossary of terms................................ ................................................... ................................................... .... 3 4 absolute maximum ratings ........................ ................................................... ............................................... 3 5 application information ......................... ................................................... ................................................... . 3 6 general electrical specifications ............... ................................................... .................................................. 4 7 magnetic specifications ......................... ................................................... ................................................... . 5 8 driver output vs magnetic pole .................. ................................................... ................................................ 5 9 detailed general description .................... ................................................... .................................................. 5 10 unique features ................................ ................................................... ................................................... .... 6 10.1 active soft switching ................................................... ................................................... .............................................. 6 10.2 best performance to noise compromise......................................... ................................................... ........................... 7 10.3 two-stage thermal protection ................................................... ................................................... ............................... 7 11 performance graphs.............................. ................................................... ................................................... 8 11.1 r dson vs. t j ................................................... ................................................... ................................................... ............ 8 11.2 r dson vs. v dd ................................................... ................................................... ................................................... ......... 8 11.3 magnetic parameters vs. t j ................................................... ................................................... .................................... 8 11.4 magnetic parameters vs. v dd ................................................... ................................................... ................................. 8 11.5 i dd vs. t j ................................................... ................................................... ................................................... ................ 8 11.6 i dd vs. v dd ................................................... ................................................... ................................................... ............. 8 11.7 v ol vs t j ................................................... ................................................... ................................................... ................ 9 11.8 power dissipation vs. t a ................................................... ................................................... .......................................... 9 12 standard information regarding manufacturability of melexis products with different soldering processes .................................................. ..................................... 10 13 esd precautions ................................ ................................................... ................................................... .. 10 14 packages information (outline drawing, hall plat e location & pinout) .............................. ......................... 11 14.1 vk package (4-pin to92) ............................................. ................................................... ............................................ 11 14.2 dc package (8-pin narrow soic) ................................................... ................................................... .......................... 12 15 disclaimer ..................................... ................................................... ................................................... ...... 14
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 3 of 14 da t as h ee t apr/13 3 glossary of terms two-coil fan a fan with two-coil windings where current alternat es from 1 coil to the other depending on the direction of the magnetic field. milli t e s la ( m t ), g a u s s u n its o f m ag n e tic f l u x d e n s ity : 1mt = 10 gauss v dd vol t age o n th e c o ils c o m m on n o d e . i dd curr e n t s upp l y i n g th e c h ip w h ich f lo w s th r ou gh th e c o il co nn e cted to th e s w itc h e d o f f output driver. peak o u t pu t c u rre n t t h e c u rre n t f l o w i n g in th e c o il a t s t a r t - up , on ly limited b y t h e c o il r e s i s t an c e r coil a n d the output driver resistance r dson. co n ti nu o u s ou t pu t c u rre n t t h e c u rre n t f l o w i n g in th e c o il w h e n th e fan is spi nn i n g n o r m all y . l o cked r o t o r t h e sta t e w h e n th e fan sto p p e d spi nn i n g du e t o m e c h a n ic a l b loc k age. lfpm li n e ar fe e t p e r mi nu te C u n it of a ir f low ve l o city 4 absolute maximum ratings 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 device reliability. 5 application information v dd - s upp l y v o l t a g e (12v / 24 v ) 3 -w i r e f a n at power-on, the fg/rd output is kept high for at l east 500 s independently of the rotation status or magnetic field. it prevents appearance of unexpected impulse s or oscillation on the fg/rd output signal due to broke n coil d 1 + v pu - pull-up v o l t a g e ( 5 v ) r p u l1 l2 (i.e. open connection) or short connection between out1 or out2 to ground. a decoupling capacitor from 100nf or higher should be 10 k fg ( r d) o ut 1 c 1 100nf d e c oup li ng placed between the v dd point (fan common node) and ic s fg(rd) s i gn a l - m lx 90285 gnd o ut 2 ground. it reduces the risk of electrical over-stre ss damage to ground bouncing when plugging/unplugging th e fan connector. speed control scheme using a transistor on the grou nd pin are not recommended as it may damage the ic. please typical two-coil fan application circuit contact melexis application engineers for recommend ation if you require implementing speed control. parameter symbol value units fan supply voltage (continuous) v ddcont 30 v fan supply voltage (peak < 100 s) v ddpeak 60 v output current (continuous) i outcont 350 ma output current (peak) i outpeak 700 ma fg/rd voltage v fg/rd 28 v fg/rd output current (sink) i fg/rd 20 ma operating junction temperature range t j -40 to 150 c magnetic flux density b unlimited mt
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 4 of 14 da t as h ee t apr/13 6 general electrical specifications dc operating parameters t j = 25c, v dd = 24v (unless otherwise specified) parameter symbol test conditions min typ max units fan supply voltage v dd recommended operating (average) ( 1 ) 9.6 30 v extended operating voltage (2) v dd fully functional 5 30 v supply current i dd 2 4 ma power-on reset voltage v por 1.8 v output driver resistance r dson 2 3 ohms v dd = 5v 3 5 ohms output clamping voltage v out 1,2 60 80 v fg / rd output low voltage v ol i ol = 10ma 250 500 mv fg / rd output clamp voltage v clamp 28 v fg / rd output leakage current i leak v fg (v rd ) = 18v 10 a t yp ical r o t a ti o n s p ee d r an ge with active slope control asl on v dd = 12 to 24v 2-pole pair rotor magnet 2300 6700 rpm output slope duration to torque period ratio (3, 4) sl ratio v dd = 12 to 24v 6.25 10 % v d d = 5v 4.2 10 % locked rotor period t on 0.43 sec locked rotor period t off 2.6 sec thermal protection level1 on (5 ) tsd1 on 140 c thermal protection level1 off tsd1 off 120 c thermal protection level2 on tsd2 on 160 c thermal protection level2 off tsd2 off 140 c dc thermal resistance r th-ja one-sided pcb, zero lfpm 150 c/w r t h - jc 50 vk thermal resistance r th-ja one-sided pcb, zero lfpm 200 r t h - jc 70 table 2: general electrical specifications 1 the minimal value of vdd should be determined using the following equation: v dd = 9.6v + r coil * i dd 2 the extended operating voltage is the range in whic h the device is able to start-up properly (down to 5v) with full functionality of the device (includin g basic function like magnetic field sensing, fg output, lo cked rotor protection,...) with potential deviation versus normal operating conditions 3 the sl ratio is defined as the ratio of the slope duration over the motor torque period, equal to the half of the e lectrical output period t of out1 or out2 : sl ratio t slope t m 2 t slope t out 4 within asl on range, slope measured from v dson to 100% v dd 5 output slope duration reduced to half its normal va lue
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 5 of 14 da t as h ee t apr/13 7 magnetic specifications dc operating parameters t j = 25c, v dd = 5 to 30v (unless otherwise specified) pa r a m eter sy mbo l m i n t y p m ax units operate point b op 0.5 3 6 mt release point b rp -6 -3 -0.5 mt hysteresis b hyst 2 6 mt table 3: magnetic specifications 8 driver output vs magnetic pole parameter test conditions out1 out2 fg ( 6 ) north pole b < brp C all packages high low high south pole b > bop - all packages low high low table 4: driver output vs. magnetic pole (7) 9 detailed general description the MLX90285 is a one-chip solution for driving two -coil brushless dc cooling fans. based on mixed-signal cmos design, the device includes hall-effect sensor with offset canc ellation scheme, voltage regulator, digital logic and power output drivers i n a single package. the MLX90285-fg version has an open-drain tachomete r fg output that follows the hall signal. this sign al is used by hardware monitoring system to determine the rotatio n speed of the fan. in the MLX90285-rd version, the open-drain alarm ou tput rd is a safety signal which allows detecting i f the fan rotates or not. it is active low during normal spinning of the motor. it goes high when the magnetic flux switchi ng frequency drops below nearly 1.15hz (35rpm for 2 pole-pair fan) the built-in locked rotor protection automatically shuts off the coil current when the rotor is mechan ically blocked for more than 0.43 second. the fan tries to restart every 3 seconds until the rotor is released. this on/off cy cling reduces the average current by factor of about 7. this protection preve nts the fan to be overheated or damaged. the device is based on the melexis patented no-vdd design which removes the need of separate supply voltage pin for two-coil fan. during operation, the power outputs a re always operating as complementary, meaning also that one power output is kept inactive while the other is active. melexis cleverly turned this fact into benefit as no-vdd devices such as MLX90285 recover the power supply through the inact ive power output pin. therefore, a separate supply voltage pin is not required anymore and the device including logical o utput fg/rd can fit into a small 4-pin through-hole package vk. in the application, the no-vdd design inherently isolates the ic behind the fan coils. without direc t output to the external environment, the device is best protected against e sd and over-voltage issue on the power supply volta ge line. 6 fg state is only valid during normal operation. in locked rotor protection, fg signal is high 7 the magnetic pole is applied facing the branded sid e of the package
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 6 of 14 da t as h ee t apr/13 b 10 unique features 10.1 active soft switching the use of the melexis soft switching techniques in the us168/169 and us651/661 has already proven its efficiency to noticeably reduce electrical and acoustic noise by precisely control the output slope duration on the fan coil. the us168/168 is the first generation with fixed output slope dur ation and the us651/661 is the second generation wi th possibility for the user to fine-tune the slope duration via an externa l pin. the MLX90285 represents the third generation of sof t switching device as it goes even a step further i nto intelligence and smart driving. it mainly combines the major advantage of each prev ious generation: adjustable slope control best balance between motor performance and acoustic /electrical noise no need of external component for slope control cost efficiency and simplicity adjustable without external component is possible as the device automatically determine the slope du ration depending on the fan rotation speed. the MLX90285 determines the fan rotation speed by m easuring the half output switching period from the magnetic field signal. the output slope duration is extrapolated b y measuring the duration from the falling edge on o ut1 to the cross over with out2. the result is processed to determine the actual out put slope duration to torque period ratio (sl ratio = 2 . t slope / t out ), leading to two possible options: if sl ratio < 6.25% (typical), the slope duration should be inc reased if sl ratio > 6.25% (typical), the slope duration should be dec reased the digital slope duration control register is incr emented or decremented accordingly, thus updating t he slope duration value for both outputs out1 and out2, prior the nex t rising slope occurring on out1. magnetic field at hall sensor b op (from rotor magne t ) rp digital magnetic field (north or sou t h) ? . t out1 = ? . 7.5ms = 3.75ms v out1 v out2 output vol t age output crossover out1 slope dura t ion measurement signal ? t slope = 0.15ms ? t slope = 0.145ms slope duration t o output swi t ching period ratio regis t er digital slope dura t ion control regis t er ( 1 n 96 ) sl ratio comparison + decision = 0.3ms / 3.75ms = 8% slope duration must be decreased n = n 0 (= 53) t slope = ref . n (= ref . 53 = 0.3ms) t slope = ref . (n 0 - 1) (= ref . 52 = 0.29) 1 - all values in green are arbitrary and just give n for example purpose 2 - condition example: 4000rpm, 2-pole pair rotor ma gnet, initial slope duration = 0.3ms, target sl ratio = 6.25% picture 1 C active soft switching operation princip le
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 7 of 14 da t as h ee t apr/13 on on the slope control provides smooth change in the coi l current and allows reducing both electrical and a coustic noise. in addition, the MLX90285 slope generation is proce ssed upon reaching a precise magnetic threshold b op /b rp . unlike other fan driver using the rotor magnetic field amplitude which might lead to difficulty in adequate rotor m agnet magnetisation, the melexis solution provides best results with dif ferent fan size with weaker or stronger rotor magne t. 10.2 best performance to noise compromise the MLX90285 features a typical 6.25% ratio between slope duration over the torque period, proportiona l to the fan rotation speed. this value is controlled to provide the best compromise between fan performance (rotation speed and current consumption) and acoustic noise. increasing this ra tio mainly lowers the motor efficiency while decrea sing this ratio removes the low noise benefit. sl ratio output slope duration performance low performance 408us 6.25% high performance low noise acoustic noise medium performance high noise 140us 2300 rotation speed 6700 2300 rotation speed (rpm) 6700 picture 2 C slope duration to torque period ratio e ffect the device keeps this ratio constant within a large rotation speed range from 2300rpm to 6700rpm (2-po le pair fan). therefore, the device automatically adjusts its low noise specification to a given cooling application requirements. 10.3 two-stage thermal protection the use of soft switching through linear slope cont rol leads to an increase of the ic junction temperature . as a result, using long slope and high output current can result in re aching the thermal protection threshold and so shut off the device to prevent overheating. in the application, it would s top a low noise cooling fan in an environment where cooling is a required due to high temperature. the MLX90285 is the first fan driver to integrate a two-stage thermal protection. when the ic junction temperature exceeds a 1 st thermal threshold tsd1 (140c typical), the slope duration are unconditionally divided to half the actual value. t he immediate effect is a reduction of the average p ower dissipation, hence it stabilizes or even starts reducing the ic juncti on temperature so the cooling fan continues rotatin g to provide airflow in a system. the slope duration is back to normal when the junct ion temperature decreases below tsd1 off (120c typical). however, in case the reduction of the slope duratio n is not enough to stop the junction temperature in crease, the device has a 2 nd thermal threshold tsd2 (160c typical) which then shuts-off the ic to prev ent over-heating. all the outputs out1, out2 and fg/rd goes to high level and stay in this state until the junction temperature decreases belo w tsd2 off (140c typical).
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 8 of 14 da t as h ee t apr/13 magnetic field(mt ) idd (ma) ron (ohms) idd(ma) magnetic field(mt ) ron(ohms) 11 performance graphs 11.1 r dson vs. t j 11.2 r dson vs. v dd 6 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 ron, vdd=5v ron, vdd=24v 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 tj= -40 c tj= 25 c tj= 150 c 0 -40 -20 0 20 40 60 80 100 120 140 160 tj ( c) 0 4 6 8 10 12 14 16 18 20 22 24 26 28 30 vdd (v ol ts) 11.3 magnetic parameters vs. t j 11.4 magnetic parameters vs. v dd 6 6 5 5 4 4 3 3 2 2 1 1 0 0 -1 -1 -2 -2 -3 -3 bop, tj= -40oc bop, tj= 25 c bop, tj= 150 c brp, tj= -40 c brp, tj= 25 c brp, tj= 150 c -4 bop,vdd=5v bop,vdd=24v -4 brp,vdd=5v brp,vdd=24v -5 -5 -6 -40 -20 0 20 40 60 80 100 120 140 160 t j ( c) -6 4 6 8 10 12 14 16 18 20 22 24 26 28 30 vdd (volts) 11.5 i dd vs. t j 11.6 i dd vs. v dd 4 4 3.5 3.5 3 3 2.5 2.5 2 2 1.5 1.5 1 0.5 idd, vdd= 5v idd, vdd= 24v 1 0.5 idd, tj= -40 c idd, tj= 25 c idd, tj= 150 c 0 -40 -20 0 20 40 60 80 100 120 140 160 tj (oc) 0 4 6 8 10 12 14 16 18 20 22 24 26 28 30 vdd (volts)
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 9 of 14 da t as h ee t apr/13 fg/rd pin output saturation voltage,(mv) allowed power dissipation (w) 11.7 v ol vs t j 11.8 power dissipation vs. t a 500 1 400 0.9 0.8 t a = 25degc dc - rth=150degc/w - pdm ax=833 m w vk - rth=200degc/w - pdm ax=625 m w va - rth=170 degc/w - pdm ax=735 m w 0.7 300 0.6 0.5 200 0.4 0.3 100 vdson, vdd=5v,iol= 10ma vdson, vdd=24v,iol= 10ma 0.2 0.1 t j max = 150degc 0 -40 -20 0 20 40 60 80 100 120 140 160 tj ( c) 0 -40 -20 0 20 40 60 80 100 120 140 160 t j ( c)
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 10 of 14 da t as h ee t apr/13 12 standard information regarding manufacturabilit y 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 (surface mount devices) 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 (surface mount devices) and th ds (through hole devices) 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 (through hole devices) en60749-15 resistance to soldering temperature for through-hol e mounted devices solderability smds (surface mount devices) and thd s (through hole devices) eia/jedec jesd22-b102 and en60749-21 solderability for all soldering technologies deviating from above mentioned standard conditions (regarding peak temp erature, temperature gradient, temperature profile etc) addi tional classification and qualification 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 th e restriction of the use of certain hazardous substances) please visit the quality page on our we bsite: http://www.melexis.com/quality.aspx 13 esd precautions electronic semiconductor products are sensitive to electro static discharge (esd). always observe electro static discharge control pro cedures whenever handling semiconductor products.
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 11 of 14 da t as h ee t apr/13 - 1 + 2 e.d.m process s u r f a c e ro1.6~2.4u m 1.42 + /- 0.10 3.65 + /- 0.10 2.5 m i n see note 3 10.50 + /- 0.30 14 packages information (outline drawing, hall plat e location & pinout) 14.1 vk package (4-pin to92) 5.22 + / - 0.10 4.20 +/ - 0.10 1.55 +/ - 0.10 0.73 +/ - 0.10 n o t e s : 1. all d i m e n s i on s are i n m illi m e t e r s 0.00 0.20 + 0.02 0.46 - 0.03 3 +2 (2x) 5 +2 ( 2 x ) 2. package d i m e n s i on e x c l ud e m o l d i ng fl a s h. m o l d fl a s h s h a ll not exceed 0.127 mm . 3. to preserve r e li a b ili ty , it i s recommended t o h a v e t o t a l l ea d l e ng t h e qu a l to 2.5mm m i n i m u m , measured from the package li n e . 4. vk package i s a p i n t h r ough - ho l e p a c k a g e , hence adapted for wave s o l d e r i ng p r oc e ss . a r e fl o w s o l d e r i ng process i s not r e co mm e nd e d w i t h vk package as it may s e r i ou s l y a ff e c t d e v i c e r e li a b ili ty . 1.27 +/ - 0.03 3.81 +/ - 0.03 0.38 +/ - 0.03 0.38 +/ - 0.03 m a rk i ng : top s i d e : 1 st l i n e = 285fg (or 285rd) ? part nu m b e r (MLX90285) and o p t i on c od e 2 nd l i n e - xxyww ? xx = lot nu m b e r y = year ( l a s t d i g i t) ww = c a l e nd a r w ee k 5 - 1 ( 2 x ) 0.30 +/ - 0.10 ( 2 x ) 3 + 2 ( 2 x ) h a ll p l a t e l oc a t i on 2.25 +/ - 0.13 0.52 1.05 +/ - 0.13 n o t e s : 1. all d i m e n s i on s are i n m illi m e t e r s p i n numb er ( v k ) p i n n a m e f unc tion 1 fg (rd) fg (rd) open drain output signal 2 out1 open drain coil driver 1 3 out2 open drain coil driver 2 4 gnd ground pin
mlx90 2 85 24v low noise two-coil fan driver 390 1 0 9 0285 rev. 004 p a ge 12 of 14 da t as h ee t apr/13 0 . 64 4 . 93 +0.08 1.47 - 0.07 5.99 +0.21 - 0.15 1.9 2.0 +0.10 1.63 - 0.08 3.94 +0.05 - 0.13 see note 5 0.45 14.2 dc package (8-pin narrow soic) 8 7 6 5 1 2 3 4 see note2 addition +0.05 - 0.13 see note5 parting line 5 +3 - 5 +0.25 - 0.23 see note4 detail a h x 45 notes: 1. controlling dimensions in millimeters. 2. the appearance of pin 1 is optional, round type on single leadframe and rectangular type on matrix leadframe. 3. formed leads shall be planar with respect to one another within 0.0792mm at seating plane. 4. length of terminal for soldering to a substrate. 5. package length and width are reference datums an d do not include mold flash or protrusions, but does include mold mismatch and are measured at the mold parting line. mold flash or protrusions shall not exceed 0.1524m m at end and 0.254mm at window. 6. this part is compliant with jedec standard ms-012. marking: top side : +0.08 1. 27 bsc 0. 41 - 0.06 seating plane see note3 see detail a +0. 05 0.25 - 0.06 1 st line = mlx285 ? part number (MLX90285) 2 nd line = fgyyww (or rdyyww) ? option code and datecode (yy -year ww - calendar week) 3 rd line = xxxxxx ? lot number marking on top side is duplicated on bottom side hall plate location 8 7 6 5 notes: 1. all dimensions are in millimeters. 1 2 3 4 2.4 2.5 package outline pin number (dc) pin name function 1 fg (rd) fg (rd) open drain output signal 2 out1 open drain coil driver 1 3 gnd ground pin 4 out2 open drain coil driver 2 5, 6, 7, 8 - not connected
390 1 0 9 0285 rev. 004 p a ge 13 of 14 da t as h ee t apr/13 mlx90 2 85 24v low noise two-coil fan driver 15 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, statutory , implied, or by description regarding the informat ion set forth herein or regarding the freedom of the described de vices from patent infringement. melexis reserves th e right to change specifications and prices at any time and wi thout notice. therefore, prior to designing this pr oduct into a system, it is necessary to check with melexis for c urrent information. this product is intended for us e in normal commercial applications. applications requiring ext ended temperature range, unusual environmental requ irements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by melexi s 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 damages, inclu ding but not limited to personal injury, property d amage, loss of profits, loss of use, interrupt of business or indi rect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, p erformance or use of the technical data herein. no obligation or liability to recipient or any third party shall ari se or flow out of melexis rendering of technical o r other services. ? 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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