ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 1 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated ? 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 package: sot89-5l (note 1) ? sot89-5l: available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 2) 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. typical applicati on circuit 289 1 3 2 vdd (24v) coil2 coil1 r pu rd d2 d1 * rpu : typical 10 kohm c1 5 4 48v 48v gnd d3 note: the optional capacitor c1 and diode d3 are for power stabilization. c1 is recommended to be e-cap., luf/25v; d3 is recommended to be zener diode, v z =27v. which c1and d3 value need to be fine tuned to optimize design for different coils and power suppliers. 24v dc brush-less fan with rd output function features general description
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 2 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated ordering information ah289 - y l - 13 packing package lead free l : lead free (note 1) y : sot89-5l 13 : tape & reel g : green device package code packaging (note 3) 13? tape and reel quantity part number suffix ah289-yl-13 y sot89-5l 2500/tape & reel -13 AH289-YG-13 y sot89-5l 2500/tape & reel -13 notes: 1. ah289-yl-13 will be replaced by AH289-YG-13 2. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . 3. 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. 4. reverse taping as shown on diodes inc. surface mount (smd) packaging document ap02007, which can be found on our website http://www.diodes.com/datasheets/ap02007.pdf. 1 2 3 7 4 5 dob do gnd rd vdd sot89-5l 289 ( top view ) pin name pin no. description vdd 1 input power gnd 2 ground do 3 output pin dob 4 output pin rd 5 rotor-state detection pin assignments pin descriptions
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 3 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated block diagram hall plate control logic regulator lock shutdown and automatic recovery vdd gnd dob do amp. rd
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 4 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated absolute maximum ratings (t a = 25 c) symbol parameter rating unit vdd supply voltage 30 v i o output current i o ( ave ) 400 ma i o ( peak ) 700 ma p d power dissipation 800 mw t st storage temperature -55 ~ 150 c t j maximum junction temperature 150 c ja thermal resistance junction-to-case (note 5) 156 c/w t j t a tc jc ja notes: 5. ja should be confirmed with what heat sink thermal resistance. if no heat sink contacting, ja is almost the same as jc. . recommended oper ating conditions symbol characteristic conditions min max unit vdd supply voltage (note 6) operating 3.8 28 v t a operating ambient temperature operating -40 100 c notes: 6. please watch the current limit issue when the operation voltage is over 26.4v, because of the different efficiency in the coil.
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 5 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated electrical characteristics (t a = 25 c, vdd = 24v, unless otherwise specified) symbol parameter conditions min typ. max unit idd supply current operating - 2.0 4.0 ma i off output leakage current v out = 24v - < 0.1 10 a t lrp-on locked protection on 0.4 0.46 0.6 sec t lrp-off locked protection off 2.4 2.76 3.6 sec v out(sat) output saturation voltage i o = 200ma - 450 700 mv i o = 300ma - 680 800 r ds(on) output on resistance i o = 200ma - 2.25 3.5 ohm v ol rd output vds i o = 10ma - 0.3 0.5 v vz output zener-breakdown voltage 42 55 65 v truth table (note 7) 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 notes: 7. latch-type rd output is low during rotation and high during stop. magnetic characteristics (t a = 25 c, vdd = 24v, unless otherwise specified, note 8) (1mt = 10 gauss) symbol characteristics min typ. max unit bop operation point 10 30 60 gauss brp release point -60 -30 -10 gauss bhy hysteresis -- 60 -- gauss notes: 8. magnetic characteristics are for design information, which will vary with supply voltage, operating temperature an d after soldering.
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 6 of 9 april 2010 ds31052 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. 11 7 of 9 april 2010 ds31052 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 2 55 07 51 0 01 2 51 5 0 t a (c) p d (mw) -40 marking information (1) sot89-5l 1 2 3 5 7 4 289 y w x ( top view ) y : year : 0~9 w : week : a~z : 1~26 week; x : internal code a~z : lead free a~z : 27~52 week; z represents 52 and 53 week a~z : green
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 8 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated package information (all dimensions in mm) (1) package type: sot89-5l sensor location
ah289 high voltage hall-effect smart fan motor controller ah289 rev. 11 9 of 9 april 2010 ds31052 www.diodes.com ? diodes incorporated important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorpora ted convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or pr oducts described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fee s arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. life support diodes incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety-critical, life support devices or systems. copyright ? 2010, diodes incorporated www.diodes.com
|
