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data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 1 general description the AH9479/80/81 is a single chip solution for driving single coil brushless dc motors. it combines a motor driver with a high sensitivity hall sensor, which simplifies the pcb design and makes the fabrication of small-size motors possible. the ah9480 has an open-drain tachometer output fg that follows the hall sensor latching output. the ah9481 has an open-drain rotation detection output rd that is active low when the motor is spinning and goes high when blocked. when there is no motion about 0.4 second, the ic will automatically detect the locked rotor conditions, and enter protection mode, shutting off the motor driver for 4 seconds. then, the ic will turn on the motor driver for 0.4 second to detect whether there is rotation condition, if fails, the ic will shut off motor driver for four seconds agai n. this sequence will be repeated until rotation condition is detected, and the ic enters normal operation. this feature can effectively prevent the ic from overheating and damage due to long-time locked rotor condition. ?soft-switch? is used to reduce the vibration and acoustic noise. thermal-shutdown protection ensures that the motor driver operates under specified temperature ranges. the AH9479 is packaged in to-94, and the ah9480/81 is packaged in to-95 and msop-8. features ? full bridge driver ? high sensitivity integrated hall sensor ? soft-switching for low noise ? low supply voltage: 2.5v ? locked rotor protection and auto-restart ? thermal protection ? output over-current protection ? short circuit protection ? tachometer output signal (ah9480) ? alarm output signal (ah9481) applications ? 5v/12v low noise bldc cooling fans ? l o w vo l t a g e / l o w p o w e r b l d c m o t o r s ? notebook dc fans / blowers ? automotive low noise climate control fans ? micro-motors to-94 to-95 msop-8 figure 1. package types of AH9479/80/81
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 2 1 2 3 4 5 gnd out2 out1 fg/rd vcc 1 2 3 4 vcc out1 out2 gnd pin configuration z4 package z5 package (to-94) (to-95) (for AH9479) (for ah9480/81) m8 package (msop-8) (for ah9480/81) figure 2. pin configur ation of AH9479/80/81 pin description pin number to-94 to-95 msop-8 pin name function 1 2 fg/rd frequency generator (rotation detection) open drain output 1 2 7 vcc power supply pin 2 3 4 out1 output pin 1 3 4 6 out2 output pin 2 4 5 3, 5 gnd ground pin 1, 8 nc no connection 1 2 3 4 8 7 6 5 nc fg/rd gnd out1 gnd out2 vcc nc
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 3 functional block diagram a (b) {c} a for to-94 b for to-95 c for msop-8 figure 3. functional block diagram of AH9479/80/81
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 4 tr: tape & reel blank: bulk ordering information ah94 - circuit type package temperature range output signal part number marking id packing type to-94 AH9479z4-g1 9479z4-g1 bulk fg ah9480z5-g1 9480z5-g1 bulk to-95 rd ah9481z5-g1 9481z5-g1 bulk fg ah9480m8tr-g1 9480m8-g1 tape & reel msop-8 -40 to 85 c rd ah9481m8tr-g1 9481m8-g1 tape & reel bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. g1: green package z4: to-94 z5: to-95 m8 : msop-8 79: AH9479 80: ah9480 81 :ah9481
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 5 absolute maximum ratings (note 1) parameter symbol value unit supply voltage v cc 18 v peak output current i out_p 500 ma continuous output current i out_c 300 ma fg/rd pull-up voltage v fg /v rd 18 v fg/rd output current i fg /i rd 10 ma to-94 550 to-95 600 power dissipation p d msop-8 585 mw operating ambient temperature t a -40 to 85 oc storage temperature t stg -55 to 150 oc to-94 227 to-95 208 thermal resistance (junction to ambient) ja msop-8 214 oc/w esd (human body model) esd 6000 v esd (machine model) esd 200 v note 1: stresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions parameter symbol min max unit supply voltage v cc 2.5 16 v operating ambient temperature t a -40 85 oc
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 6 electrical characteristics v cc =12v, t a =25 o c, unless otherwise specified. parameter symbol conditions min typ max unit supply voltage v cc operating, r coil =100 ? ? 2.5 16 v supply current i cc 4.3 12 ma v cc =12v,t a =25oc, i out =300ma 3.3 ? on resistance (r pmos +r nmos =r s ) r dson1_2 v cc =12v,t j =125 ,i out =300ma 3.3 ? fg/rd output low voltage v ol i ol =5ma 0.18 0.5 v fg/rd output leakage current i leakage v fg (v rd )=5v 0.15 10 a locked rotor period (on) t on v cc >7v 0.4 s locked rotor period (off) t off v cc >7v 4 s protection temperature t otp 175 oc magnetic characteristics v cc =12v, t a =25oc, unless otherwise specified. parameter symbol min typ max unit operating point b op 0 20 50 gauss releasing point b rp -50 -20 0 gauss hysteresis b hys 40 gauss
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 7 test circuit ah9480/81 vcc vcc out2 gnd out1 23 1 4 c2 20pf c1 20pf out2 (dob) out1 (do) 5 fg/rd fg/rd 5v figure 4. basic test circuit of AH9479/80/81 n s marking side
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 8 0 5 10 15 20 0 2 4 6 8 10 i cc (ma) v cc (v) with magnet without magnet -25 0 25 50 75 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 i cc (ma) t a ( o c) v cc =3v v cc =5v v cc =12v v cc =14v v cc =18v hysteresis characteristics figure 5. v do vs. magnetic flux density figure 6. v dob vs. magnetic flux density typical performance characteristics figure 7. i cc vs. v cc figure 8. i cc vs. t a -30 -20 -10 0 10 20 30 0 2 4 6 8 10 12 14 16 magnetic flux density b (gauss) v do (out1 ) (v) v cc v sat -30 -20 -10 0 10 20 30 0 2 4 6 8 10 12 14 16 magnetic flux density b (gauss) v dob (out2) (v) v cc v sat
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 9 4 6 8 101214161820 -20 -10 0 10 20 30 40 50 b (gauss) v cc (v) b op b rp b hys -25 0 25 50 75 100 125 -20 -10 0 10 20 30 40 50 b (gauss) t a ( o c) v cc =5v b op b rp b hys -25 0 25 50 75 100 125 -20 -10 0 10 20 30 40 50 b (gauss) t a ( o c) v cc =12v b op b rp b hys -25 0 25 50 75 100 125 -20 -10 0 10 20 30 40 b (gauss) t a ( o c) v cc =18v b op b rp b hys typical performance characteristics (continued) figure 9. b op /b rp /b hys vs. v cc figure 10. b op /b rp /b hys vs. t a (v cc =5v) figure 11. b op /b rp /b hys vs. t a (v cc =12v) figure 12. b op /b rp /b hys vs. t a (v cc =18v)
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 10 -25 0 25 50 75 100 125 0 2 4 6 8 10 r s ( ? ) t a ( o c) v cc =3v, i out =100ma v cc =5v, i out =200ma v cc =12v, i out =300ma v cc =14v, i out =300ma v cc =16v, i out =300ma v cc =18v, i out =300ma 150 200 250 300 350 400 450 2 4 6 8 r s ( ? ) i out (ma) v cc =12v 0 5 10 15 20 25 0 100 200 300 400 500 600 700 800 900 1000 1100 v fg (mv) i out (ma) v cc =12v, t a =25 o c -25 0 25 50 75 100 125 100 150 200 250 300 v sat_fg (mv) t a ( o c) v cc =12v, i out =5ma typical performance characteristics (continued) figure 13. r s vs. t a figure 14. r s vs. i out figure 15. v fg vs. i out figure 16. v sat_fg vs. t a
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 11 -50 -25 0 25 50 75 100 125 150 175 0 100 200 300 400 500 600 power dissipation (mw) ambient temperature ( o c) package: msop-8 typical performance characteristics (continued) figure 17. power dissipation vs. t a figure 18. power dissipation vs. t a -50 -25 0 25 50 75 100 125 150 175 0 100 200 300 400 500 600 power dissipation (mw) ambient temperature ( o c) packages: to-94 to-95
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 12 typical application AH9479 vcc out2 gnd out1 1 23 4 coil d1 r1 c1 d2 note 2:c1 should be at least larger than 2.2 f, r1=0 to 10 ?. figure 19. typical application of AH9479/80/81
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 13 mechanical dimensions to-94 unit: mm(inch)
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 14 mechanical dimensions (continued) to-95 unit: mm(inch) 1.295(0.051) 1.803(0.071) 0.610(0.024) min 0.360(0.014) 0.510(0.020) 0.330(0.013) 0.432(0.017) 0.950(0.037) ref 14.000(0.551) 16.000(0.630) 0.381(0.015) 0.581(0.023) 3.531(0.139) 3.785(0.149) 1.220(0.048) 1.620(0.064) 1.000(0.039) 1.200(0.047) 2.200(0.087) 2.400(0.094) package sensor location (for hall ic) 5.105(0.201) 5.359(0.211)
data sheet single phase low noise sm art motor driver AH9479/80/81 mar. 2012 rev. 1. 1 bcd semiconductor manufacturing limited 15 mechanical dimensions (continued) msop-8 unit: mm(inch) 4.700(0.185) 0.650(0. 026) typ 5.100(0.201) 0.410(0.016) 0.650(0.026) 0 . 0 0 0 ( 0 . 0 0 0 ) 0 . 2 0 0 ( 0 . 0 0 8 ) 0.300(0. 012) typ 3 . 1 0 0 ( 0 . 1 2 2 ) 2 . 9 0 0 ( 0 . 1 1 4 ) 0 . 8 0 0 ( 0 . 0 3 1 ) 1 . 2 0 0 ( 0 . 0 4 7 ) 3.100(0. 122) 2.900(0. 114) 0 6 0 . 1 5 0 ( 0 . 0 0 6 ) t y p 0 . 7 6 0 ( 0 . 0 3 0 ) 0 . 9 7 0 ( 0 . 0 3 8 ) ` note: eject hole , oriented hole and mold mark is optional . 1.350(0.053) 1.550(0.061) 0.870(0.034) 1.070(0.042) hall sensor location
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited

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