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BD7903FS ???? ic 1/16 cd-rom / dvd-rom ; 5ch ????? BD7903FS BD7903FS ? cd-rom dvd-rom ???????? 1 ???e 5ch ? ic ?? l? 180 pwm l??????X?gF??X`l? ??? btl ????? ???????W???? ! ! ! ! ? ? ? ? cd-rom / dvd-rom ! ! ! ! L L L L 1) ??`?``???`?`??????? ?? 1 ???d 2) 2 ?`??`???? 4ch on/off ??????`` ?`?xk???? 3) ?ki 4) S?p??? ssop-a54 ??` 5) `????i ?? ??? ?? ? pwm l????????? ? ?????`???` fg ????i ? ??R? ( r on ( ) = 0.85 ? ) ?? ?`???`???? ?? ? ?R??? btl ? ?? X`? ?? ? ??? btl ? ? ??????????W???? ! ! ! ! ~?? ~?? ~?? ~?? (ta=25 c) parameter symbol unit power mos ?o?y ? ? /btl ?? ??o?y e??? ?
m??o?y ?0? ?^9s c? -9s c? spv m 1,2 prev cc , v m act spv cc pd topr tstg limits ? 55~ + 150 15 15 7 2.6 ? 1 ? 35~ + 85 v v v w c c ? 1 pcb (70mm 70mm 1.6mm z??3, x ) ?
{ ta = 25 c ? p?;b? ?xz 1 c tmv 20.8mw ?na?{
BD7903FS ???? ic 2/16 ! ! ! ! ?X ?X ?X ?X (ta=25 c) ( ??Rv??S?p???]O? ) parameter symbol max. typ. min. unit ?? mos ?o?y 1 spv m 1, 2 14 12 spv cc v ?????o?y ??????o?y prev cc prev cc v m act 14 12 v m act 5.0 4.5 v v e???
m??o?y 6.0 spv cc 5.0 4.5 v ! ! ! ! ?? ?? ?? ?? 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2 3 10 9 12 13 11 6 4 5 7 8 54 41 40 39 38 37 36 35 34 33 32 31 30 29 28 53 52 45 46 43 42 44 49 51 50 48 47 duty control current detector hall bias 3fg out level shift break mode stand-by control level shift tsd matrix + ? + ? + ? spv cc fg hb spv m 1 v m hu ? hw + hw ? hu + hv ? hv + v u gnd gnd gnd gnd gnd spgnd spgnd w sprnf spin ldin cfcerr2 cfcerr1 vinfc spv m 2 vintx v c v c slin opout ctl2 powgnd prev cc ctl1 ldo + ldo ? vofc ? vofc + votk ? votk + vnffc gnd gnd gnd gnd gnd pregnd slo + slo ? vnftk v m act cfil ctkerr2 ctkerr1 prev cc powgnd pregnd v m act spv cc + ? + ? + ? + ? 7.5k 7.5k 7.5k 60k 30k 10k 15k + ? + ? 10k 25k 20k 20k 10k 10k 7.5k hall amp/reverce protect 2 2
BD7903FS ???? ic 3/16 ! ! ! ! h h h h pin no. pin name function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 fg hb spvm1 hu ? hu + hv ? hv + hw ? hw + v u gnd gnd gnd gnd gnd spgnd w sprnf spin ldin cfcerr2 cfcerr1 vinfc spvm2 vintk v c fg ?? z? ???? e??? ????o?? ?? ?? u ? ?? ?? ?? u + ?? ?? ?? v ? ?? ?? ?? v + ?? ?? ?? w ? ?? ?? ?? w + ?? e?????? v
z? e?????? u
z? gnd gnd gnd gnd gnd e??? ??? gnd e?????? w
z? e???????vu z?? e???
m??? ??????? ????????;???
?z? ????????;???
?z? ??????? e??? ????o?? 2 ???????????
m?, j?y?? pin no. pin name function 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 ctkerr1 ctkerr2 cfil vnffc vmact vnftk votk + votk ? vofc + vofc ? pregnd gnd gnd gnd gnd gnd powgnd ldo ? ldo + slo1 ? slo1 + ctl1 prev cc ctl2 opout slin spv cc ????????;???
?z? ????????;???
?z? e?????????;???
?z? ?????<z? ???????????o ?????????<z? ?????????
y z? ????????? ? z? ?????
y z? ????? ? z? ? gnd gnd gnd gnd gnd gnd btl ??? gnd ???????? ? z? ????????
y z?
?t????? ? z?
?t?????
y z? ?????
m??? 1 ????? ??o ?????
m??? 2 |??? z?
?t??????? e??? ?
m??o ? ???w
y z?z ? z?x??t0b??
q
BD7903FS ???? ic 4/16 ! ! ! ! three-phase motor driver output hall signal input current feedback btl driver output fo, tk current feedback btl driver input fo, tk btl driver input ld btl driver input sl btl driver output sl, ld pwm driver input spindle spindle driver current detection input spindle driver feedback filter pin hall bias fg signal output 46 48 45 47 50pin 50pin 50pin 2 50pin 3 17 25 18 11 10 wu v 19 50pin 2.5k ? 7 5 9 54pin 50k ? 50k ? 54pin 54pin 6 4 8 30 54pin 5.4k ? 5k ? 10k ? 10k ? 21 54pin 100 ? 34 36 35 37 32pin 10k ? 20k ? v ref 20 54pin 54pin 60k ? 24 26 50pin 50pin 10k ? 21 50pin 50pin 10k ? 53 50pin 50pin 100 ?
BD7903FS ???? ic 5/16 connection with capacitor for error amp 2 feedback for fc, tk / connection with capacitor for error amplifier 1 control signal input op amp output reference voltage input 49 51 50pin 50k ? 50k ? 21 50pin 50pin 10k ? 31 33 23 28 50pin 50pin 50pin 50pin 10k ? 20k ? 7.5k ? 7.5k ? 22 29 51pin 10k ? 27 50pin 4ch 10k ? 50k ? 50k ? 60k ? 100 ? 10k ?
BD7903FS ???? ic 6/16 ! ! ! ! ?? ?? ?? ?? ???? ta = 25 c, prev cc = spvm1/2 = 12v, spv cc = v m act = 5v, v c =1.65v, rnf = 0.33 ? , rd = 0.5 ? s??v ??s??v 1 ??s??v 2 ??s??v 3 ???s??v 1 ???s??v 2 e?????? ? ? ???? ? ?????y e?????? ? ? ???? ? ?????v )????? ?
???y c? e?????? ? ? ???|?? z? ? ?? ?3 ? 1 ( " ) ? z???? z? on ? ( ) z? on ? ( < ) z??????v pwm *t
: e?????? ? ? fg z? ? high ?y low ?y
?t????? ? ?
2? op ?? ? ?? c? ?????v ??? z??y 7g z?1??v 7g z?3???v
?t????? ? z?|????y z?^?y? z?^?y? ?yb? ???????? ? z?|????y 7g z? ? ;a??? i q1 i q2 i q3 i st1 i st2 v hb i hib v him v hicm v dzsp gmsp v ohsp v omsp i limsp fosc v fgh v fgl v icmop i bop v olop i soop iisiop voofsl vomsl volsl gvsl i oo v om gm ? ? ? ? ? 0.5 ? 50 1 20 1.2 ? ? 1.5 ? 4.7 ? 0.3 ? ? ? ? ? 100 ? ? 18.0 ? 8 3.6 1.4 26 20 2.9 ? ? 1.0 1 200 ~ 50 1.5 0.6 0.25 1.8 100 4.9 0.1 ~ 80 0.1 ? ? 0 1.3 0.5 20.0 0 4.0 1.7 40 32 4.5 1 1 1.5 5 ? 4 100 1.8 1.0 0.5 2.0 ? ? 0.2 11 300 0.5 0.3 1 100 1.6 0.85 22.0 8 ? 2.0 ma ma ma ma ma v a mv v mv arms/v ? ? a khz v v v na v ma ma mv v v db ma v a/v parameter symbol min. typ. max. unit conditions circuit v cc (loading off ) v cc (loading on ) spv cc v cc spv cc ihb = 10ma rnf = 0.33 ? io = 500ma il =? 500ma rnf = 0.33 ? fg z?? 100k ? p 5v t
? io = 500ma io = 500ma
2? opamp x 0db
? rl = 8 ? rl = 8 ? vin = bias 0.2v fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 fig.1, 2 1l
?-x`os??d?{
BD7903FS ???? ic 7/16 ???????? ? z?|????y z?^?y h z?^?y l ?yb? ctl1, ctl2 ?? high ?y ?? low ?y fw v c ??-x`os??d?{
BD7903FS ???? ic 8/16 ! ! ! ! y y y y 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2 3 10 9 12 13 11 6 4 5 7 8 54 41 40 39 38 37 36 35 34 33 32 31 30 29 28 53 52 45 46 43 42 44 49 51 50 48 47 duty control current detector hall bias 3fg out level shift break mode stand-by control level shift tsd matrix + ? + ? + ? v m spgnd v c prev cc powgnd pregnd v m act spv cc + ? + ? + ? + ? 7.5k 7.5k 7.5k 60k 30k 10k 15k + ? + ? 10k 25k 20k 20k 10k 10k 7.5k hall amp/reverce protect 2 2 iu + iu ? iw ? iv ? iv + hu + + + + + hv + iw + ihb hw + h ? + + v cc v cc vsprnf sprnf 2 1 sw-sp vu w spout ldin 100p spin v c acin acin v cc dv cc vol.out out + out ? sled vol.out out + out ? loading act.out nf out ? out + focus tracking 0.1 fig.1 sw-op 10k 10k 2 1 a v a a a a a dv cc vfg vmb vmsp vov vou vspgnd vow vdet vspin vldin veofc vfilfc vinfc vmsp vintk v c 100k ? v ctl1 iqvc iqdv opin opout ctl2 + + a v a vmact iqac + a iop slin voop + v vofop opout opin + 100p act.out out ? out + nf vopinsl voposl vv cc voslp voslm voldp voldm vpowgnd pregnd vofcm vofcp votkm votkp vnftk vmact vnffc vcnf veotk vfiltk
BD7903FS ???? ic 9/16 fig.2 sw-rl sw-rl sw-il sw-il out + nf out ? v o 1 1 1 2 2 2 1 2 rl rd 47 h il il act.out v + sw-rl sw-il sw-il out + out ? v o 1 1 1 2 2 2 rl1 47 h il il vol.out v + sw-rl 1 2 47 h rlsp rlsp rlsp u v w ilsp spout sw-il 1 2 1 2 47 h 47 h 1 2-w 2-v 2-u
BD7903FS ???? ic 10/16 ! ! ! ! y? y? y? y? 1 (v cc = spvm = 12v, dv cc = vmact = 5v, vc = 1.65v, rl (act) = 8 ? , rl (sl) = 8 ?+ 47 h, rl (sp) = 2 ?+ 47 h, rd = 0.5 ? , sprnf=0.33 ? , h ?= 2.5v, hu += 2.6v, hv += hw += 2.4v) s??v iq1 iq2 iq3 ist1 ist2 ? ? ? ? ? l l l l l l l h h h 1 1 1 1 1 11 11 11 11 11 1 1 1 1 1 1 1 1 1 1 designation input vin switch ctl 12rl sp sl il op measure point conditions iqvc iqvc iqdv iqvc iqdv e?????? ? ? ???|?? z? ? ? ???? ? ? ???? ? vhb gmsp ronusp ronlsp ilimsp fosc 1.65v 0.65 ? 2 0v 0v 0v h h h h h h h l h h h h 2 2 2 1 1 1 1 1 1 2 2 1 1 1 1 1 vdzsp ? 1 h l 2111 1 1 1 2 2 111 ihib 1.65v hh1111 ? 1 check vrnf with no output at vin = vc 20mv check vrnf with output at vin = vc 100mv ihb = 10ma current flowing in each terminal at h ?= 2.5v, h += 2.7v (2.3v) ilsp = 500ma ilsp =? 500ma ron = 0.5a 12v ? vosp ron = 0.5a vosp pin 2 ? fg ? vfgl 1.65v h h 1111 hw += 2.6v, hv += 2.6v, hw += 2.4v vfgh 1.65v h h 1111 1 1 1 1 1 1 1 1 1 1 hw += 2.6v, hv += 2.4v, hw += 2.4v vfg vfg iu + ( ? ), iv + ( ? ), iw + ( ? ) vsprnf vsprnf vsprnf outu, v, w outu, v, w vospu ? 2 spindle driver vin =? 400mv, vin =? 900mv gm ( + ) = ( )/0.33 ? vsprnf1 ? vsprnf2 900mv ? 400mv
BD7903FS ???? ic 11/16 ! ! ! ! y? y? y? y? 2 (v cc = spvm = 12v, dv cc = vmact = 5v, vc = 1.65v, rl (act) = 8 ? , rl (sl) = 8 ?+ 47 h, rl (sp) = 2 ?+ 47 h, rd = 0.5 ? , sprnf=0.33 ? , h ?= 2.5v, hu += 2.6v, hv += hw += 2.4v) ???????? ibop iosoop iooac vomac gmac 1.65v ? 0.20v 1.65v 3.3v (0v) hh h h h h h h 2 2 1 2 1 1 1 1 1 1 1 1 1 1 1 1 11 hh111 designation input vin switch ctl 12rl sp sl il op measure point conditions (vo ? iooac 8) / 0.2 8 gvsl 0.25v h l 211 1 1 20log|(vo ? vofsl) / 0.25)| iooac = v o /8 20log |(vo ? vofld) / 0.25)| iop = 500 a il = 500ma il =? 500ma vof iopb vo vo vo vo 12 ? out + ( ? ) out + ( ? ) vo ????????
2?|??? ? iosiop ? h h 111 iop =? 1ma vof voop volop 5v h h 111 1 1 1 1 2 2 2 1 vih vil 1.65v 1.65v h l h l2 2 111 111 check active at "h" = 2.0 check stand-by at "l" = 0.5 iqvc iqvc ctl1, ctl2 vmvc vmv cc on 1.65v 1.65v h h h h1 1 111 111 1 1 1 1 check all output at vc = 0.5v check all output at v cc = 4.0v output output vmv cc off 1.65v hh11111 check all output at v cc = 4.4v output fw vofld vohld volld gvld 0.25v 1.65v 3.3v (0v) 0v (3.3v) l l l l h h h h 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2
?t????? vofsl vohsl volsl 1.65v 3.3v (0v) 0v (3.3v) h h h l l l 2 1 1 1 1 1 1 1 1 1 2 2 1 1 1 il = 500ma il =? 500ma vo 12 ? out + ( ? ) out + ( ? ) vo
BD7903FS ???? ic 12/16 ! ! ! ! h h h h 1. ? 1, 2 (49, 51pin) ? h ? (2v ) ?? l ? (0.5v ) ???????? on/off ? ?????``??? `??? ctl1 (22pin) ctl2 (23pin) e???
? ?? ??????????? ll hl ? h ctl1 (22pin) ctl2 (23pin) spin < v c spin > v c lh hh
y8t?? o8??t?? 3?????t??
y8t?? ... on ... off 1) 2) 3) 4) 1) ` ?B???CrM??????????? ?`????? 2) ????` `???? ????`???`????? 3) ??`` ( ?? ) spin > v c r???? ??? spin ??`???? spin < v c r?????? ??? gnd ?`?? 4) `??`` ( ?? ) spin > v c r?????? gnd ?`?? 2. ?` (4 9pin) / ?` (2pin) ( ?? ) ?`??`?A??A???????`?R 1.0 4.0v O ? hu hv hw v cc 2pin ? ??
? ? v cc 2pin ? 3???
? ? hu hv hw
BD7903FS ???? ic 13/16 3. ??? (20pin) / ? (19pin) ( ??? spin) ( ? sprnf) ????? vc spin sprnf
y8 ?? ?3 + ?? ?3 ? _ gm ??? ilim rnf ( ?? ) ?Q?? ???? ? ??`?`????A???????? spindle ? z???? z??????v ? ?z ?
?? z???? 0.5/rnf (arms/v) 0.6/rnf (a/v) 29.7k/ { rnf (rin + 60k) } (arms/v) rin : ? ?z3??? ? ???-? 4. pwm k ??? pwm k? k????k 100khz (typ.) ? 5. N ?` a) v c ?` v c (27pin) ?R 0.7v (typ.) ????????`???? ? v c ?R 1.0v ?O? b) v cc ?` spv cc (54pin) ? prev cc (50pin) ?R 4.0v (typ.) ??????? ?`????? ?R 4.25v (typ.) ??? ?? 6. `???? ic ? ?`???? ( ??o ) i?? ??`S?p ?? ??? ? S?p? ?B ???? ? N 175 c (typ.) ?`??????? ( ??? off ?? ) ?? ? 150 c (typ.) ??? ? _? ?
BD7903FS ???? ic 14/16 ! ! ! ! 1 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2 3 10 9 12 13 11 6 4 5 7 8 54 41 40 39 38 37 36 35 34 33 32 31 30 29 28 53 52 45 46 43 42 44 49 51 50 48 47 duty control current detector hall bias 3fg out level shift break mode stand-by control level shift tsd matrix + ? + ? + ? v m spgnd v c prev cc powgnd pregnd v m act spv cc + ? + ? + ? + ? 7.5k 7.5k 7.5k 60k 30k 10k 15k + ? + ? 10k 25k 20k 20k 10k 10k 7.5k hall amp/reverce protect 2 2 v cc vc opout slide in loading tracking prev cc = 12v v cc vmact = 5v fig.3 -com -com spindle input 0.1 loading input tracking input focus input 0.33 spindle fg 100k hall3 hall2 hall1 m slide m focus rd rd 0.1 0.1 spv cc = 5v 0.1 0.1
BD7903FS ???? ic 15/16 ! ! ! ! ?? ? ?? ? ?? ? ?? ? (1) sprnf ???? sprnf (19pin) ???]??? ic ? ?`??? ?A? 3 25 19 50 vm vm sprnf rnf 12v prev cc rnf w ic w \w c?uu z ?q_s^??b{
x xzyx{ (2) ???? cfil ???A??????? 0.1 f ?X??? pwm ? ????? ? ???? ??] ????? ? ?X ???????? ?? ?? ??? W r g L??? a ? (3) ?? o ? g ?? ic ? ? ??? (0.1 f) ?A?? `?? ? ???`??? ?? esr ? (10 f ) ? (4) j ?j g ` ? v cc g ` ( j ) ? gnd g ` ( ?j ) ?? g ` ( ??` ) ? ?? ic ? H ic ? ??? ic p ???? k ? ? ! ! ! ! ?? ?? ?? ?? 0 100 75 50 25 125 150 2 0 1 3 power dissipation : pd (w) ambient temperature : ta ( c) fig.4 ?0npa
2.6w ? 70mm 70mm z^ 1.6mm z? )
?p 25.7% ?z??3, x?

BD7903FS ???? ic 16/16 ! ! ! ! ? ? ? ? units : mm ssop-a54 0.1 11.4 0.2 13.4 0.3 2.2 0.1 0.1 0.8 127 54 28 22.0 0.2 4.0 0.2 6.0 0.2 0.36 0.1 0.15 0.1 0.3min.

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