ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 1 of 7 july 2007 www.diodes.com ? diodes incorporated lead-free ? on chip hall sensor ? rotor-locked shutdown ? automatically restart ? rotor-state detection (rd) output ? built-in zener protection for output driver ? operating voltage: 3.8v~28v ? output current: i o (ave) = 400ma ? lead free finish/rohs compliant for lead free products (note 1) ? lead free packages: sot89-5l ah289 is a monolithic fan motor controller with hall sensor?s capability. it contains two complementary open-drain transistors for motors coil driving, an automatic lock current shutdown, and recovery protection. in addition, the rotor-state detection (rd) output is for rotor-state detection. rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat. then, the automatic recovery circuit will restart the motor. these protected actions are repeated and periodic during the blocked period. until the blocking is removed, the motor recovers and runs normally. ordering information note: 1. rohs revision 13.2.2003. glass and high temperature solder exemptions applied, see eu directive annex notes 5 and 7 . note: 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. features general description tube/bulk 7? tape and reel device package code packaging (note 2) quantity part number suffix quantity part number suffix ah289-y y sot89-5l na na 2500/tape & reel -13 pin assignment ah289 x x x packing -b : bulk package lead l : lead free y: sot89-5l taping -13 : - 1 2 3 7 4 5 dob do gnd rd vcc sot89-5l 289
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 2 of 7 july 2007 www.diodes.com ? diodes incorporated symbol description rd rotor-state detection vdd input power do output pin dob output pin gnd ground block diagram hall plate control logic regulator lock shutdown and automatic recovery vdd gnd dob do amp. 2 3 4 5 1 rd pin descriptions
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 3 of 7 july 2007 www.diodes.com ? diodes incorporated typical application circuit 289 1 5 4 3 2 vdd (24v) coil 2 coil 1 r pu rd gnd d2 48v 48v d1 c1=1uf 24v dc brush-less fan with rd output function absolute maximu m ratings ( t a = 25 c ) characteristics symbol rating unit supply voltage v cc 30 v i o (ave) 400 output current i o (peak) 700 ma power dissipation p d 800 mw operating temperature topr -40 ~ 100 c storage temperature tstg -55 ~ 150 c maximum junction temperature tj 150 c thermal resistance ja 156 c/w t j t a tc jc note: ja should be confirmed with what heat sink thermal resistance. if no heat sink contacting, ja is almost the same as jc .
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 4 of 7 july 2007 www.diodes.com ? diodes incorporated electrical characteristics ( t a = 25 c, vdd = 24v, unless otherwise specified ) characteristics symbol conditions min. typ. max. unit supply voltage v dd operating 3.8 - 28 * v supply current i cc operating - 2.0 4.0 ma output leakage current i off v out = 24v - < 0.1 10 a locked protection on t lrp-on 0.4 0.46 0.6 sec locked protection off t lrp-off 2.4 2.76 3.6 sec i o = 200ma - 450 700 output saturation voltage v out(sat) i o = 300ma - 680 800 mv output on resistance r ds(on) i o = 200ma - 2.25 3.5 ohm rd output vds v ol i o = 10ma - 0.3 0.5 v output zener-breakdown voltage v z 42 55 65 v *note: please watch the current limit issue when the operation voltage is over 26.4v, because of the different efficiency in the coil. truth table in- in+ ct out1 out2 rd mode h l l h l l rotating l h l l h l rotating - - h off off h lockup protection activated magnetic characteristics ( t a = 25 c, v dd = 24v, unless otherwise specified ) ( 1mt = 10 gauss ) characteristics symbol min. typ. max. unit operation point bop 10 30 60 gauss release point brp -60 -30 -10 gauss hysteresis bhy -- 60 -- gauss
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 5 of 7 july 2007 www.diodes.com ? diodes incorporated operating characteristics dob do 24 20 16 12 8 4 off op rp on output voltage in volts 24 20 16 12 8 4 off rp op on output voltage in volts bop brp 0 bop brp 0 magnetic flux density in gauss magnetic flux density in gauss v sat v sat marking side s (sot89-5l) n
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 6 of 7 july 2007 www.diodes.com ? diodes incorporated performance characteristics ( sot89-5l ) t a ( c) 25 50 60 70 75 80 85 90 95 100 p d (mw) 800 640 576 512 480 448 416 384 352 320 t a ( c) 105 110 115 120 125 130 135 140 145 150 p d (mw) 288 256 224 192 160 128 96 64 32 0 power dissipation curve 0 100 200 300 400 500 600 700 800 900 0 25 50 75 100 125 150 t a (c) p d (mw) marking information (1) sot89-5l 1 2 3 5 7 4 289 y m x y : year: 0-9 m : month: a~l x : internal code a~z : lead free
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 4 7 of 7 july 2007 www.diodes.com ? diodes incorporated package information (unit: mm) (1) package type: sot89-5l sensor location important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall a ssume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated.
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