AH477/480 single phase hall effect latch this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev.0.1 a ug 9, 2004 1/9 ? features - on-chip hall sensor - bi-direction h type output drivers for single coil - internal bandgap regulator allows temperature compensated operations and a wide operating voltage range - high output sourcing/sinking capability up to 350ma - operating voltage: 3.5v~20v - low output switching current noise - auto-shutdown and auto-restart provided (ah480) - sip-4l package for AH477; sip-5l, msop-8l packages for ah480 ? applications - single-coil brush-less dc fan - single-coil brush-less dc motor ? pin configuration front view AH477 14 3 2 sip-4l front view ah480 15 4 3 2 sip-5l 1 3 2 4 8 6 7 5 msop-8l ah480 ? general description AH477/480 is the integrated hall sensor with output drivers designed for electrical commutation of brush-less dc motor application. the devices are included as follows: on-chip hall voltage generator for magnetic sensing; the error amplifier that amplifies the hall voltage; a comparator is to provide switching hysteresis for noise rejection; the bi-direction drivers for sinking and driving large current load. internal bandgap regulator is used to provide temperature compensated bias for internal circuits and allows a wide operating supply voltage range. on top of that, ah480 provides auto shutdown and auto restart function for the dc fan to consume less power in the lock up condition. if a magnetic flux density larger than threshold bop, do is turned to sink and dob is turned to drive. the output state is held until a magnetic flux density reversal falls below brp causing do to be turned to drive and dob turned to sink. AH477/480 is rated for operation over-temperature range from -20 o c to 85 o c and voltage range from 3.5v to 20v. the devices are available in low cost die forms or rugged sip-4/5l and msop-8l. ? pin descriptions (1) sip-4l(AH477) name p/i/o pin # description vcc p 1 positive power supply do o 2 output pin dob o 3 output pin vss p 4 ground (2) sip-5l(ah480) name p/i/o pin # description ct i/o 1 timing capacitor vcc p 2 positive power supply do o 3 output pin dob o 4 output pin vss p 5 ground (3) msop-8l(ah480) name p/i/o pin # description vss p 1, 2 ground ct i/o 3 timing capacitor fg o 4 frequency generator vcc p 5, 6 positive power supply do o 7 output pin dob o 8 output pin
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 2/9 ? ordering information AH477/480 x -x x x - x packing blank : tube or bulk a : tape & reel p4: sip-4l m : msop-8l package lead l : lead free blank: normal wafer body blank or a~z : if necessary to specify p5: sip-5l magnetic characteristics a or b ? block diagrams (1) sip-4l(AH477) 1 reg. hall sensor amp vss 3 2 output(dob) 4 ctl ckt 1 1 output(do) vcc do dob (2) sip-5l(ah480) hall sensor control logic regulator lock shutdown auto restart circuits 1 vcc ct vss dob do 2 4 3 output(dob) 5 2 2 output(do)
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 3/9 ? block diagrams (continued) (3) msop-8l (ah480) hall sensor control logic regulator lock shutdown auto restart circuits 3 vcc ct dob do 5 8 7 output(dob) 2 6 6 output(do) 4 fg 1 vss ? application circuit 1 2 3 coil 4 0.1uf AH477 vcc AH477, sip-4l vcc 12 3 4 coil 5 0.1uf c t ah480 0.47uf ah480, sip-5l
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 4/9 ? absolute maximum ratings ( at ta=25 o c ) characteristics symbol values unit supply voltage v cc 20 v magnetic flux density b unlimited continuous 250 hold 300 output ?on? current peak (start up) ic 600 ma output junction breakdown voltage v ceo v cc + 3v be v operating temperature range ta -20~+85 c storage temperature range ts -65~+150 c sip-4l 550 sip-5l 550 mw package power dissipation msop-8l p d 350 mw (note 1) (note 1) ground pin must connect to large area copper on pcb as possible. ? electrical characteristics ( ta=+25 c, vcc=14v ) characteristic symbol test conditions min typ max unit supply voltage vcc 3.5 20 v vce(sink) vcc=14v, ic=200ma 500 800 mv output saturation voltage vce(drive) vcc=14v, ic=200ma vcc-1.5 vcc v fg saturation voltage vce vcc=14v, i fg =20ma 0.3 0.7 v supply current icc vcc=20v, output open 12 25 ma output rise time tr vcc=14v, rl=820 ? , cl=20pf 1.0 5.0 s output falling time tf vcc=14v, rl=820 ? , cl=20pf 0.3 1.5 s switch time differential ? t vcc=14v, rl=820 ? , cl=20pf 1.0 5.0 s charge current i ct 2.8 ua limiting voltage v ctl1 2.8 v limiting voltage v ctl2 1.8 v on time t on c t =0.47f 150 ms duty ratio d r t off / t on 6 7 8 ? magnetic characteristics (ta=+25 c) (1mt = 10 gauss) a grade characteristic symbol min. typ. max. unit operate point bop 5 - 70 gauss release point brp -70 - -5 gauss hysteresis bhy - 70 - gauss b grade characteristic symbol min. typ. max. unit operate point bop - - 100 gauss release point brp -100 - - gauss hysteresis bhy - 70 - gauss
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 5/9 ? operation characteristics marking side s marking side s (sip4/5) ( msop-8 ) n n off op rp on output voltage in volts op on off rp output voltage in volts -200 200 100 -100 0 -200 200 100 -100 0 hystercsis characteristics magnetic flux density in gauss magnetic flux density in gauss dob do vsat vsat ? performance characteristics ta ( c) ~25 50 60 70 80 85 90 95 100 pd (mw) 550 440 396 352 308 286 264 242 220 ta ( c) 105 110 115 120 125 130 135 140 150 pd (mw) 198 176 154 132 110 88 66 44 0 power dissipation curve 0 100 200 300 400 500 600 -20 -5 10 25 40 55 70 85 100 115 130 145 ta ( c) pd (mw ) 150
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 6/9 ? marking information 477 part number year: ( top view ) "2" = 2002 "1" = 2001 x x x x x nth week: 01~52 id code: a ~ z blank : normal l : lead free package sip-4l 480 part number year: ( top view ) "2" = 2002 "1" = 2001 x x x x x nth week: 01~52 id code: a ~ z blank : normal l : lead free package sip-5 480 x yy ww x part number date code yy: year, "01"=2001 "02"=2002 ww: xth week,01-52 x: internal code 123 4 8765 (top view) blank : normal l : lead free package msop-8l
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 7/9 ? package information (1)package type: sip-4l active area depth package sensor location marking side 0.7mm 1.97mm 1.04mm 1234 package dimension 14.25mm +/-1.25mm 1.03mm +/-0.1 1.55mm +/-0.1mm 0.38mm +/-0.03mm 5.22mm +/-0.1mm 4.20mm +/-0.1mm 3.65mm +/-0.1mm 1.42mm+/-0.1mm 1.27mm +/-0.03mm 0.41mm +/-0.03mm 0.30mm +/-0.1mm 3.81mm +/-0.03mm AH477 0.46mm +/-0.03mm 0.2mm max. 5 o -7 o o 3 o -5 o 3 o -5 5 o -7 o
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 8/9 ? package information (continued) (2)package type: sip-5l (unit: mm / [inch]) 4.2 ref [0.165 ref] 0.001] [0.016 0.03 0.41 0.001] [0.037 0.03 0.95 0.003] [0.144 0.1 3.65 0.003] [0.019 0.1 0.48 ] 003 . 0 206 . 0 [ 1 . 0 22 . 5 2-0.3c [0.079-0.012c] 0.001] [0.015 0.03 0.38 3 ~ 2 0.012] [0.563 0.3 14.3 0.003] [0.061 0.1 1.55 0.003] [0.029 0.1 0.73 5 ~ 2 5 ~ 2 3 ~ 2 ah480 location of sensing point 1.016 mm [0.04 inch] 2.006 mm [0.079 inch] 12 345 ( top view)
AH477/480 single phase hall effect latch anachip corp. www.anachip.com.tw rev. 0.1 aug 9, 2004 9/9 ? package information (continued) (3)package type: msop-8l e1 e d l gage plane 0.25 detail a b a2 a1 a y c detail a e 12 (4x) 0.038dp surface polished pin 1 indicator 0.45 mm dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.81 1.02 1.22 0.032 0.040 0.048 a1 0.05 - 0.15 0.002 - 0.006 a2 0.76 0.86 0.97 0.030 0.034 0.038 b 0.28 0.30 0.38 0.011 0.012 0.015 c 0.13 0.15 0.23 0.005 0.006 0.009 d 2.90 3.00 3.10 0.114 0.118 0.122 e 4.80 4.90 5.00 0.189 0.193 0.197 e1 2.90 3.00 3.10 0.114 0.118 0.122 e - 0.65 - - 0.0256 - l 0.40 0.53 0.66 0.016 0.021 0.026 y - - 0.076 - - 0.003 0o 3o 6o 0o 3o 6o ? location of sensing point 1.209mm 0.858mm 1 2 3 4 8 7 6 5
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