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ah577 5 document number: ds3 8232 rev. 1 - 2 1 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 single phase motor driver with internal hall effect latch sensor description the ah577 5 is a single - chip solution for driving single - coil brushless direct current (bldc) fans and motors. the integrated full - bridge driver out put stage uses soft switching to minimize audible switching noise and electromagnetic interference (emi) providing a low - noise solution. to simplify system circuit and minimize external components, the device integrates a stable high - sensitivity hall e ffect sensor, voltage and temperature compensated internal references, amplifiers and the output h - bridge power switches with low r d son . to help protect the motor coil, the ah577 5 provides rotor lock protection which shuts down the output drive if rotor lock is detected. the device automatically re - starts when the rotor lock is removed. in case of over voltage, the device shuts down the output drive and enters standby mode to help prevent over voltage stress on the coil. ove r - temperature shutdown prov ides thermal protection for the device. the ah577 5 is available in to94 package . features ? supports single - phase full wave bldc fan/motor drive ? built - in hall effect sensor and input amplifier ? operating voltage: 2. 5 v to 18v ? soft switching for low noise dc fan motor applications ? rotor lock protection (lock detection, output shutdown and automatic re start) ? over voltage shutdown ? thermal protection ? no external timing capacitor - reduces the numbe rs of external components required ? industry standard to94 package ? totally lead - free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. green device (note 3) pin assignments ( front view) to94 applic ations ? 5v / 12v / 15v min. bldc cooling fans ? net b ook/ note b ook and desktop bl dc fans ? instruments c ooling f ans ? medium voltage / low power bldc motor s notes: 1. no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) comp liant. 2. see http://www.diodes.com /quality/lead_free.html for more information about diodes incorporateds definitions of halogen - and antimony - free, "green" and lead - free. 3. halogen - and antimony - free "green products are de fined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. 1 2 3 4 1 . v d d 2 3 4 2 . o 1 3 . o 2 4 . g n d
ah577 5 document number: ds3 8232 rev. 1 - 2 2 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 typical applications circuit ( note s 4) note: 4 . c1 is for power stabilization and to strengthen the noise immunity, th e recommended capacitance i s 0.1 f for small motor current to 1 f or higher for larger motor current and place capacitor as close to the v dd pin as possible . the value of c1 should be selected adequately to support the motor current. pin description s pin numb er pin name description 1 v dd power supply input pin 2 o 1 output driv e sourcing & sinking pin 3 o 2 output driv e sourcing & sinking pin 4 gnd ground pin functional block diagram v d d o 1 o 2 g n d a h 5 7 7 5 s y s t e m p o w e r d z c 1 d 1 o p t i o n a l m o t o r c o i l g n d l o c k d e t e c t , s h u t d o w n a n d a u t o m a t i c r e - s t a r t s o f t s w i t c h i n g c o n t r o l h a l l s e n s o r a m p o 1 o 2 p o w e r m a n a g e m e n t g n d c o n t r o l l o g i c b l o c k f u l l b r i d g e d r i v e r d y n a m i c o f f s e t c o n c e l l a t i o n 1 2 3 4 v d d
ah577 5 document number: ds3 8232 rev. 1 - 2 3 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 absolute maximum ratings ( note s 5 & 6 ) ( @ t a = +25c, unless otherwise specified.) symbol characteristics values unit v dd _max maximum s upply v oltage (note 6 ) 2 4 v v reverse reverse s upply v oltage on a ll p ins - 0.3 v i o( cont ) maximum continuous output c urrent 300 ma i o ( hold ) maximum o utput c urrent (hold) - motor lock condition 500 ma i o(peak) maximum o utput c urrent (peak) 8 00 ma b maximum m agnetic fl ux d ensity unlimited C p d power dissipation to94 1 , 5 00 mw t st g storage temperature range - 65 to + 15 0 c t j maximum junction temperature + 1 50 c ja thermal resistance junction - to - ambient 86.3 c/w jc thermal resistance junction - to - case 8.25 c/w esd hbm human body model esd c apability v dd , o1, o2 a nd gnd pins 4 k v note s: 5. s tresses greater than the 'absolute maximum ratings' specified above may cause permanent damage to the device. these are stres s ratings only; functional operation of the device at these or any other conditions ex ceeding those indicated in this specification is not implied. device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. 6. the absolute maximum v dd of 2 4 v is a transient stress ra ting and is not meant as a functional operating condition. it is not recommended to operate the device at the absolute maximum rated conditions for any period of time. recommended operating conditions symbol characteristic conditions min max unit v dd supply voltage operating 2. 5 1 8 v t a operating temperature range operating - 40 + 10 5 c electrical characteristics ( note 7) (@ t a = +25c, v dd = 12 v , unless otherwise specified.) symbol characteristics conditions min typ. max unit i dd supply curr ent no load, pwm switching or high C 3 . 4.5 ma v ov_th over v oltage protection t hreshold for shutdown to standby mode voltage increasing 1 9 2 1 2 3 v v ov_rlth over v oltage release t hreshold voltage decreasing 1 8 20 2 2 v oh output voltage high v dd = 1 2v , i out = 3 00ma v dd - 0. 3 5 v dd - 0. 25 C v v dd = 12v , i out = 3 00ma t a = - 40 c to + 10 5 c v dd - 0. 45 v dd - 0. 25 C v v dd = 3v , i out = 2 00ma v dd - 0. 3 1 v dd - 0.2 C v v dd = 3v , i out = 2 00ma t a = - 40 c to + 10 5 c v dd - 0. 3 5 v dd - 0.2 C v v ol output voltage low v dd = 12v , i out = 3 00ma C 0.2 0. 2 5 v v dd =12v , i out = 3 00ma t a = - 40 c to + 10 5 c C 0.2 0. 3 v v dd = 3v , i out = 2 00ma C 0.1 5 0. 18 v v dd =3v, i out = 2 00ma t a = - 40 c to + 10 5 c C 0.1 5 0. 2 2 v n ote : 7 . typical data is measured at t a = +25 c, v dd = 12v. the maximum and minimum parameters values over operating temperature range are not tested in production, they are guaranteed by design, characterization and process control. ?
ah577 5 document number: ds3 8232 rev. 1 - 2 4 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 electrical characteristics ( c ont inued ) ( note 8 ) (@ t a = +25c, v dd = 12v, unless otherwise specified.) symbol characteristics conditions min typ. max unit r on_total combined n - and pmos r dson including bond wire resistance v dd =12v , i out = 3 00ma C 1. 5 2. 4 1 ? ? v dd =12v , i out = 3 00ma t a = - 40 ? c to + 10 5 ? c C 1. 5 2. 7 ? ? v dd =3v, i out = 2 00ma C 1. 75 2. 45 ? ? v dd =3v, i out = 2 00ma t a = - 40 ? c to + 10 5 c C 1. 75 2. 85 ? ? t sw output soft switch time 17 load on out1/out2 C 200 C s t on on ti me - lock detect time C C 420 C ms r dr duty ratio - lock detect to shutdown time t off / t on C 10 C C tj_ sdn_th ic junction temperature thermal shutdown threshold C C + 1 70 C c tj_ sdn_hyst ic junction temperature thermal shutdown hysteresis C C + 25 C c note : 8 . typical data is at t a = +25 ? c, v dd = 12v. the maximum and minimum parameters values over operating temperature range are not tested in production, they are guaranteed by design, characterization and process control. magnetic characte ristics ( note s 9 , 10 & 1 1 ) (@ t a = + 25 c, v dd = 12 v, unless otherwise specified.) (1mt = 10 g) sym bol parameter conditions min typ max unit b op ( s outh p ole to p art m arking s ide ) operate point (note s 10 & 11 ) 5 0 70 90 g auss b rp ( n orth p ole to p art m ark ing s ide) release point (note s 10 & 11 ) - 9 0 - 70 - 5 0 b hy ( b op - b rp ) hysteresis C C C notes : 9 . typical data is measured at t a = +25 ? c, v dd = 12v. the maximum and minimum parameters values over operating temperature range are not tested in p roduction, they are guaranteed by design, characterization and process control. 10 . magnetic characteristics may vary with supply voltage, operating temperature and after soldering. 11. the peak amplitude of the rotating motor magnetic flux density at th e sensor location should be greater than +/ - 1 50 g . operating characteristics o f f o p r p o n o u t p u t v o l t a g e i n v o l t s o f f r p o p o n o u t p u t v o l t a g e i n v o l t s b o p b r p 0 b o p b r p 0 m a g n e t i c f l u x d e n s i t y ( b ) i n g a u s s ( g ) m a g n e t i c f l u x d e n s i t y ( b ) i n g a u s s ( g ) v o l v o l v o h v o h o 2 o 1
ah577 5 document number: ds3 8232 rev. 1 - 2 5 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 operating characteristics ( c ontinued) ( note s 1 2 & 1 3 ) truth table o 1 o 2 magnetic flux density b h l b < b rp l h b > b op notes : 12. when the motor locks with south pole at the hall element, o2 is kept on l and o1 is a clock with t on / t off ratio. when motor locks with north pole at the hal l element, o1 is kept on l , o2 is a clock with t on / t off ratio . 1 3 . when re - start spinning occurs, the motor speed ramp s up to the normal spinning speed from zero. speed ramp - up profile depends on motor characteristics . p a r t m a r k s ( t o 9 4 ) n o 2 o 1 t o n t o f f r e - s t a r t s p i n n i n g m o t o r l o c k e d c l e a r e d m o t o r l o c k e d d e t e c t e d m e c h a n i c a l l o c k m a g e n t i c s n n o r m a l s p i n n i n g
ah577 5 document number: ds3 8232 rev. 1 - 2 6 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 appli cation note dc supply v oltage s peed c ontrol motor speed can be controlled by varying the v dd supply voltage. for example, with 12v nominal motor, changing supply voltage between 12v to 2. 5 v , spee d can be reduced from 100% to 2 0 .8 % typically. soft s witc hing ah5775 uses soft switching of the motor coil current during commutation to minimize audible switching noise and electromagnetic interference (emi). overvoltage s hutdown of o utput d rive when the supply voltage reache s the over voltage shutdown threshold, v ov_th , the ah577 5 shuts down all the output drive switches and enters standby mode to help prevent over voltage stress on the coil. v d d g n d v o 1 v o 2 2 0 0 s t y p .
ah577 5 document number: ds3 8232 rev. 1 - 2 7 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 typical operating characteristics magnetic operating switch points average supply current lock detect ton and shutdown toff periods
ah577 5 document number: ds3 8232 rev. 1 - 2 8 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 typical operating characteristics ( c ontinued) total h - bridge path resistance C total r dson of high side a nd low side switches
ah577 5 document number: ds3 8232 rev. 1 - 2 9 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 thermal performance to94 power dissipation de rating curve (note 1 4 ) t a ( ? c ) - 40 0 25 50 60 70 80 85 90 95 100 105 110 120 125 130 140 150 p d (mw) 1500 1500 1500 1200 1080 960 840 780 720 660 600 5 40 480 360 300 240 120 0 note 1 4 : to94 through - hol e mounted to minimum recommended landing pads (through holes) on a 2 x 2 two - layer 2 oz . copper fr4 pcb ( 1 .6mm thickness) with copper flood on the top but without copper flood on the bottom la yer. to94 power dissipation de rating curve for circuit pcb with center hole cut - out (note 1 5 ) t a ( ? p d (mw) 827 827 827 662 595 529 463 430 397 364 331 298 298 265 198 165 1 32 0 note : 15. to94 through - hole mounted in a circular pcb with cent er hole cutout, single - layer 2 oz. copper fr4 pcb ( 1 .6mm thickness) with partial copper flood on the bottom lay er. the circuit pcb diameter is 1.2 with the center circular cutout diameter of 0.53 , the to94 space cut - out is 0 . 2 x 0.135 . see below for details . 0 250 500 750 1000 1250 1500 1750 - 40 - 20 0 20 40 60 80 100 120 140 160 power dissipation (mw) temperature t a ( c ) to94 thermal derating curve rthja = 86.3 o c/w 0 250 500 750 1000 - 40 - 20 0 20 40 60 80 100 120 140 160 power dissipation (mw) temperature t a ( c ) to94 thermal derating curve (custom circular pcb with centre hole cut - out) rthja = 151 o c/w
ah577 5 document number: ds3 8232 rev. 1 - 2 10 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 thermal performance ( c ontinued) circular pcb dimensions the circular pcb diameter is 1.2 with the centre circular cutout diameter of 0.53 . the to94 space cut - out is 0 . 2 x 0.135 , single - layer 2 oz.copper fr4 pcb ( 1 .6mm thickness) with partial copper flood on the bottom layer . custom circular pcb C C ordering information part number package code packaging bulk quantity part number suffix ah5775 - p - b p to94 1 , 000 - b marking information (1) package t ype: to94 a h 5 7 7 5 - x - b p a c k i n g p a c k a g e b : b u l k ( n o t e 1 3 ) p : t o 9 4 y : y e a r : 0 ~ 9 x : i n t e r n a l c o d e w w : w e e k : 0 1 ~ 5 2 ; 5 2 r e p r e s e n t s 5 2 a n d 5 3 w e e k y w w x 5 7 7 5 p a r t n u m b e r 1 2 3 4
ah577 5 document number: ds3 8232 rev. 1 - 2 11 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 package outline dimensions (all d imensions in mm . ) please see ap02002 at http://www.diodes.com/datasheets/ap0200 2.pdf for the latest version. (1) package type: to94 sensor location to94 dim min max typ a 1.46 1.66 1.56 a3 - - 0.76 b 0.35 0.56 0.39 b2 - - 0.46 c 0.36 0.51 0.38 d 5.12 5.32 5.22 e 3.55 3.75 3.65 e - - 1.27 e1 - - 3.81 l 13.50 15.50 14.50 l1 - - 1.42 s 0.63 0.83 0.73 - - 6 1 - - 4 2 - - 11 3 - - 6 all dimensions in mm t b d 0 . 6 3 / 0 . 8 4 0 . 2 7 / 0 . 4 8 p a r t m a r k i n g s u r f a c e d i e t b d h a l l s e n s o r 1 2 3 4 m i n / m a x 02(2x) 03(2x) 0(2x) 01(2x) c d e l b b2 l e e1 a a3
ah577 5 document number: ds3 8232 rev. 1 - 2 12 of 12 www.diodes.com december 2015 ? diodes incorporated preliminary - confidential ah577 5 important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this docume nt, 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 modification s, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability a rising out of the application or use of this document or any product de scribed herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such appli cations 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 produ cts purchased through unauthorized 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 fees 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 stat es, 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. this document is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical components in life support dev ices 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 su stain 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 reg ulatory ramifications of their life support devices 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 su ch 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 incorpora ted and its representatives ag ainst any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 5 , diodes incorporated www.diodes.com

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