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ah3777 document number: ds37902 rev. 1 - 2 1 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 high - voltgae low - sensitivity hall effect latch description the ah377 7 is a high voltage , low sensitivity hall e ffect latch ic designed for commutation of brushless dc motor s , flow meters, linear encoders and position sensors in industrial and consumer home appliance and personal care applications. to support a wide range of demanding applications, the design is optimized to operate over the supply range of 3.0v to 28v. with c hopper - stabilized architecture and an internal bandgap regulator to provide temperature compensated supply f or internal circuits, the ah377 7 provides a reliable solution over the whole operating range. for robustness and protection, the device has a revers e blocking diode with a zener clamp on the supply. the output has a n over current limit and a zener clamp. the single , open - drain output can be switched on with south pole of sufficient strength and switched off with north pole of sufficient strength. when the magnetic flux density ( b ) perpendicular to the package is larger than the operate point ( b op ) the output is switched on (pulled low). the output is held latched until magnetic flux density reverses and becomes lower than the release point ( b rp ). features ? bipolar latch o peration (south p ole : on, north p ole: off ) ? 3.0v to 28v o perating voltage r ange ? low s ensitivity : b op and b rp of +140g and - 140g t ypical ? single , open - drain output with over c urrent l imit ? chopper stabilized design p rovides - superior temperature s tability - minimal switch point d rift - enhanced immunity to s tress ? good rf noise i mmunity ? reverse blocking diode and zener clamp on s upply ? - 40 c to + 125 c operating t emperature ? esd (hbm) : 6 k v ? industry s tandard sot23 and sip - 3 p acka ge s ? totally lead - free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. green device (note 3) pin assignments ( top view) sot23 ( t op view) sip - 3 applications ? brushless dc motor commutation ? revolution per minute (rpm) measurement ? flow m eters ? angular and linear encoder and position sensors ? contact less commutation, speed measurement and a n gular position sensing/indexing in con s u mer home appliances , office equipment and indus trial applications note s: 1. no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 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 defined as those which contain <9 00ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. 1 v d d g n d 2 3 o u t p u t 1 . v d d 2 . g n d 3 . o u t p u t
ah3777 document number: ds37902 rev. 1 - 2 2 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 typical applications circuit note: 4 . c in is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nf ~ 100nf. r l is the pull - up resistor . pin description s package: sot23 and sip - 3 pin number pin name function 1 v dd power supply input 2 gnd ground 3 output output pin functional block diagram a h 3 7 7 7 3 . 0 v t o 2 8 v o u t p u t g n d r l c i n v d d c o n t r o l c u r r e n t l i m i t s a m p l e a n d h o l d l o w - p a s s f i l t e r a m p a m p p o w e r s w i t c h t o a l l s u b c i r c u i t s o u t p u t v d d g n d d y n a m i c o f f s e t c a n c e l l a t i o n
ah3777 document number: ds37902 rev. 1 - 2 3 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 absolute maximum ratings ( note s 5 & 6 ) ( @ t a = +25 c , unless otherwise specified.) symbol characteristic value unit v dd supply v oltage (note 6 ) 32 v v ddr reverse supply v oltage - 32 v v out_max output off v oltage (note 6) 32v v i out continuous output c urrent 60 ma i out_r reverse output c urrent - 50 ma b magnetic f lux d ensity unlimited p d package power dissipation sip - 3 550 mw sot23 230 mw ts storage temperature range - 65 to + 1 65 c t j maximum junction temperature + 150 c esd electros tatic discharge withstand capability - human body model 6 kv 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 exceeding those indicated in this speci fication 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 32 v is a transient stress rating and is not meant as a functional operating con dition. it is not recommended to operate the device at the absolute maximum rated conditions for any period of time. recommended operating conditions (@ t a = - 40 c to + 1 25 c , unless otherwise specified.) symbol parameter conditions rating unit v dd supply voltage operating 3.0 to 28 v t a operating temperature range operating - 40 to +125 c electrical characteristics (note s 7 & 8) (@ t a = - 40 c to +125 c , v dd = 3v to 28v, unless otherwise specified.) symbol parameter conditions min typ max unit v out_on output o n v o ltage i out = 20ma, b > bop - 0.2 0.4 v i out_off output leakage current v out = 28v, b < brp, output off - < 0.1 10 a i dd supply c urrent output open, t a = 25 c - 3 3 .5 ma output open, t a = - 40 c to +125 c - - 4 ma i dd_r reverse battery c urrent v dd = - 18 v , t a = - 40 c to +125 c - - 0.01 1 ma v dd = - 28v , t a = - 40 c to +125 c - - 0.01 1.5 ma t st device start - up time v dd >= 3 v , b > bop (note 7) - 10 s f c chopping frequency v dd = 3v to 28v - 800 - khz t d the time delay from magnetic threshold reached to the start of the output rise or fall (note 9) - 3.75 - s t r output rising time (external pull - up resistor r l and load capacitance dependent) r l =1 k? , c l = 20 pf - 0.2 1 s t f output falling time (internal switch resistance and load capacitance dependent) r l =1 k? , c l = 20 pf - 0.1 1 s i ocl output current limit b>bop , (note 10 ) 30 - 55 ma v z zener clamp v oltage i dd = 5ma 28 - - v notes: 7. when power is initially turned on, v dd must be within its correct operating range (3.0v to 28v) to guarantee the output sampling. the output state is valid after the start - up time of 10 s typical from the operating voltage reaching 3v. 8. typical values are defined at t a = +25 ? c, v dd = 12v. maximum and minimum values over the operating temperature range is not tested in production but guaranteed by design, process control and characterization . 9. guaranteed by design, process control and characterization, not tested in production. 10. the device will limit the output current i out to current limit of i ocl .
ah3777 document number: ds37902 rev. 1 - 2 4 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 magnetic characteristics (note s 11 &12 ) (t a = - 40 c to +125 c , v dd = 3.0 v to 28 v, unless otherwise specified ) (1mt=10 gauss) symbol parameter conditions min typ max unit b op (s outh pole to part marking side) operat ion point v dd = 12v, t a = + 25 c - 1 40 - gauss t a = - 40 c to +125 c 110 140 170 b rp (north pole to part marking side ) release point v dd = 12v, t a = + 25 c - - 140 - t a = - 40 c to +125 c - 170 - 1 40 - 110 b hy ( |b opx | - |b rpx |) hysteresis (note 1 3 ) v dd = 12v, t a = + 25 c - 280 - t a = - 40 c to +125 c 220 280 340 notes: 11. when power is initially turned on, v dd must be within its correct operating range (3.0v to 28v) to guarantee the output sampling. the output state is valid after the start - up time of 10us typical from the operating voltage reaching 3v. 12. typical values are defined at t a = +25 c , v dd = 12v . maximum and minimum values over the operating temperature range is not tested in production but guaranteed by design, process control and characterization . 13. maximum and minimum hysteresis is guaranteed by design, proces s control and characterization. v d d ( o u t p u t v o l t a g e ) b r p b o p 0 ( m a g n e t i c f l u x d e n s i t y b ) o u t p u t t u r n o f f t u r n o n ( o f f - s t a t e ) v o u t _ o n = v s a t b h y ( o n - s t a t e ) p a r t m a r k n s ( s o t 2 3 ) p a r t m a r k s ( s i p - 3 ) n
ah3777 document number: ds37902 rev. 1 - 2 5 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 typical operating characteristics magnetic operating switch points C b op and b rp supply current - 350.0 - 300.0 - 250.0 - 200.0 - 150.0 - 100.0 - 50.0 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 gauss (g) supply voltage (v) switch points bop and brp vs supply voltage brp hyst bop t a = +25 o c - 350.0 - 300.0 - 250.0 - 200.0 - 150.0 - 100.0 - 50.0 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 - 50 - 25 0 25 50 75 100 125 150 gauss (g) temperature ( o c) switch points bop and brp vs temperature brp hyst bop v dd = 3v - 350.0 - 300.0 - 250.0 - 200.0 - 150.0 - 100.0 - 50.0 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 - 50 - 25 0 25 50 75 100 125 150 gauss (g) temperature ( o c) switch points bop and brp vs temperature brp hyst bop v dd = 12v - 350.0 - 300.0 - 250.0 - 200.0 - 150.0 - 100.0 - 50.0 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 - 50 - 25 0 25 50 75 100 125 150 gauss (g) temperature ( o c) switch points bop and brp vs temperature brp hyst bop v dd = 28v 0.0 1.0 2.0 3.0 4.0 5.0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 supply current i dd (ma) supply voltage (v) supply current vs supply voltage t a = +25 c 2.0 2.3 2.5 2.8 3.0 3.3 3.5 3.8 4.0 - 50 - 40 - 30 - 20 - 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 supply current i dd (ma) temperature ( o c) supply current vs temperature 3v 12v 28v
ah3777 document number: ds37902 rev. 1 - 2 6 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 typical operating characteristics output switch on voltage output switch leakage current supply reverse current 0.0 0.1 0.2 0.3 0.4 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 output on voltage v out_on (v) supply voltage (v) output on voltage vs supply voltage t a = +25 c 0.0 0.1 0.2 0.3 0.4 - 50 - 40 - 30 - 20 - 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 output on voltage v out_on (v) temperature ( o c) output on voltage vs temperature 3v 12v 28v 0.0 5.0 10.0 15.0 20.0 25.0 30.0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 output leakage current (na) supply voltage (v) output leakage current vs supply voltage t a = +25 c 0 25 50 75 100 125 150 175 200 225 250 275 300 - 50 - 25 0 25 50 75 100 125 150 output leakage current (na) temperature ( o c) output leakage current vs temperature 3v 12v 28v 0.0 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0 2.3 2.5 2.8 3.0 - 30 - 28 - 26 - 24 - 22 - 20 - 18 - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 supply reverse current ( m a) supply voltage (v) supply reverse current vs supply voltage t a = +25 c 0 125 250 375 500 625 750 - 50 - 25 0 25 50 75 100 125 150 supply reverse current ( m a) temperature ( o c) supply reverse current vs temperature - 18v - 24v - 28v
ah3777 document number: ds37902 rev. 1 - 2 7 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 thermal performance characteristics (1) package type: sot 23 t a ( c ) 25 50 60 70 80 85 90 100 105 110 120 12 5 130 140 150 p d (mw) 230 184 166 147 129 120 110 92 83 74 55 46 37 18 0 (2) package type: s ip - 3 t a ( c ) 25 50 60 70 80 85 90 100 105 110 120 12 5 130 140 150 p d (mw) 550 440 396 362 308 286 264 220 198 176 132 110 88 44 0 0 100 200 300 0 25 50 75 100 125 150 power dissipation pd (mw) ambient temperature t a ( o c) power dissipation curve - 40 0 100 200 300 400 500 600 0 25 50 75 100 125 150 p d (mw) t a ( c) power dissipation curve - 40
ah3777 document number: ds37902 rev. 1 - 2 8 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 ordering information part number package code packaging bulk 7 tape and reel ammo box quantity part number suffix quantity part number suffix quantity part number suffix ah 3777 - p - a p sip - 3 na na na na 4 , 000/box - a ah 3777 - p - b p sip - 3 1 , 000 - b na na na na ah 3777 - sa - 7 sa sot23 na na 3 , 000/tape & reel - 7 na na note s: 14 . ammo box is for sip - 3 spread lead . 15 . bulk is for sip - 3 straight lead . marking information (1) package type: sot 23 part number package identification code ah37 7 7 sot23 z g (2) package type: sip - 3 part number package identification code ah37 77 sip - 3 37 77 a h 3 7 7 7 - x x x - x p a c k i n g p a c k a g e p : s i p - 3 s a : s o t 2 3 7 : t a p e & r e e l a : a m m o b o x ( n o t e 1 4 ) b : b u l k ( n o t e 1 5 ) x x y w x ( t o p v i e w ) x x : i d e n t i f i c a t i o n c o d e w : w e e k : a t o z : 1 t o 2 6 w e e k ; x : i n t e r n a l c o d e y : y e a r 0 t o 9 a t o z : 2 7 t o 5 2 w e e k ; z r e p r e s e n t s 5 2 a n d 5 3 w e e k 3 7 7 7 p a r t n u m b e r ( t o p v i e w ) y w w x x : i n t e r n a l c o d e y : y e a r : 0 ~ 9 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
ah3777 document number: ds37902 rev. 1 - 2 9 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 package outline dimensions (all d imensions in mm . ) please see ap02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. (1) package type: s ot 23 sensor location sot23 dim min max typ a 0.37 0.51 0.40 b 1.20 1.40 1.30 c 2.30 2.50 2.40 d 0.89 1.03 0.915 f 0.45 0.60 0.535 g 1.78 2.05 1.83 h 2.80 3.00 2.90 j 0.013 0.10 0.05 k 0. 890 1. 0 0 0.975 k1 0.903 1.10 1.0 25 l 0.45 0.61 0.55 l 1 0. 2 5 0. 55 0. 40 m 0.085 0.1 50 0.11 0 a ? all dimensions in mm 0 . 1 7 / 0 . 3 7 0 . 5 / 0 . 7 1 . 4 / 1 . 5 h a l l s e n s o r p a r t m a r k i n g s u r f a c e m i n / m a x p i n 1 d i e j k1 k l1 gauge plane 0.25 h l m all 7 a c b d g f a
ah3777 document number: ds37902 rev. 1 - 2 10 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 package outline dimensions (cont.) (all d imensions in mm . ) please see ap02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. (2) package type: sip - 3 bulk sensor location sip - 3 (bulk) dim min max a 3.9 4.3 a1 5 typ a2 5 typ a3 45 typ a4 3 typ b 2.8 3.2 c 1.40 1.60 d 0.33 0.432 e 0.40 0.508 f 0 0.2 g 1.24 1.30 h 2.51 2.57 j 0.35 0.43 l 14.0 15.0 n 0.63 0.84 p 1.55 - all dimensions in mm d i e p a r t m a r k i n g s u r f a c e 0 . 6 3 / 0 . 8 4 0 . 2 7 / 0 . 4 8 h a l l s e n s o r 1 . 9 0 / 2 . 1 0 1 . 0 5 / 1 . 2 5 1 2 3 p a r t m a r k i n g s u r f a c e m i n / m a x l j n d c g h b p a e f a 3 a4 a 1 a 2
ah3777 document number: ds37902 rev. 1 - 2 11 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 package outline dimensions (cont.) (all d imensions in mm . ) please see ap02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. (3) package type: sip - 3 ammo pack sensor location sip - 3 (ammo pack) dim min max a 3.9 4.3 a1 45 typ a2 3 typ b 2.8 3.2 c 1.40 1.60 d 0.35 0.41 e 0.43 0.48 f 0 0.2 g 2.4 2.9 n 0.63 0.84 p 1.55 - all dimensions in mm d i e p a r t m a r k i n g s u r f a c e 0 . 6 3 / 0 . 8 4 0 . 2 7 / 0 . 4 8 h a l l s e n s o r 1 . 9 0 / 2 . 1 0 1 . 0 5 / 1 . 2 5 1 2 3 p a r t m a r k i n g s u r f a c e m i n / m a x g a b p e f d a2 a1 n c
ah3777 document number: ds37902 rev. 1 - 2 12 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 suggested pad layout please see ap02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. (1) package t ype: sot23 dimensions value (in mm) z 2.9 x 0.8 y 0.9 c 2. 0 e 1.35 x e y c z
ah3777 document number: ds37902 rev. 1 - 2 13 of 13 www.diodes.com september 2015 ? diodes incorporated ah3777 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 other 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 incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of t his document or products 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 diod es incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized 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 ou t 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 fore ign 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 incorp orated 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 syst ems 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 i n 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 expe cted 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 d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safe ty - 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 in corporated. 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 ? 201 5 , diodes incorporated www.diodes.com

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