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  BH6508FS ???? ic cd, md ; ; ; ; 4ch pwm ??? ??? ??? ??? BH6508FS BH6508FS xz cd z md ?w?????? ?;t? c^?h 4ch w pwm ???pb{ z? ?t?? mosfet ??;`os?z??w ? ? ? ??=ud pb{ ! ; m ; m ; m ; m ??? cd z md ! ? ? ? ? ? ? ? ? 1  ? ? ? ??{ 2  ? on ?{ 3 ? ?z ? ?u ?sm{ 4  ? 3 ?u ?^m{ 5  ?y<s?t??z???
^ su?m{ !
? 07 g 
? 07 g 
? 07 g 
? 07 g  ta = 2 5 c  !
* ? ?^ e
* ? ?^ e
* ? ?^ e
* ? ?^ e (9(4,;,9 @4)63 040;: 50; 6> 

 

 ??705 6 + 679 :;. t t  y? ?? ?????? ????    4 4 ? ? ???(1?? p?;b? ?xz??tmvy??4?na?{ ? ? ?o ?y ? ???s? ?o ?y ? ??? ?o ?y ??? z? ?v ?0 ? ?^9 s c? - 9 s c? (9(4,;,9 @4)63 50; (?? @7? 05? 6> 

 

?? ??705 ??9,- ?y705 ?? ? y? ?? ?? ?? t? ?? ?? ?y ??  

??     ?? ?o ?y ????s? ?o ?y ???? ?o ?y , j ?y
BH6508FS ???? ic ! ??????? ??????? ??????? ??????? !  z?
?  z?
?  z?
?  z?
? 32 31 30 29 28 27 26 24 23 22 20 19 18 17 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 25 21   nf amp 20k clk fr rf 20k 20k vg vcc 1k 20k 3.75k h bridge4   nf amp logic3 logic4 saw osc h bridge3 thermal shut down pre driver3 pre driver4   nf amp 20k ct fr rf 20k 20k vref 1k 20k 1k h bridge1   nf amp logic2 logic1 mute4 h bridge2 pre driver2 pre driver1 pin. no z? ;y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 mute4 ct in1 cn1 powgnd1 out 1f powv cc 1 out 1r powgnd12 out 2r powv cc 2 out 2f powgnd2 cn2 in2 vref ch4 ??? z? ~ t z? z? ch1 ?? z? ch1 ???? z? ?? ? , ??? ????? ch1
y z? ?? ? ?o ?? ch1 ? z? ?? ????? ch2 ? z? ?? ? ?o ?? ch2
y z? ?? ? , ??? ????? ch2 ???? z? ch2 ?? z? , j ?y ?? z? pin. no z? ;y 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 v cc vg in3 cn3 powgnd3 out 3f powv cc 3 out 3r powgnd34 out 4r powv cc 4 out 4f cn4 in4 powgnd4 clk ????s? ?o ?? ????s? ?o ?? ch3 ?? z? ch3 ???? z? ?? ????? ch3
y z? ?? ? ?o ?? ch3 ? z? ?? ????? ch4 ? z? ?? ? ?o ?? ch4
y z? ch4 ???? z? ch4 ?? z? ?? ????? ? ???? ?? z? ????w
y z?z ? z?x ?? z?t 0b??
q{
BH6508FS ???? ic ! ? z?s?
$ ? z?s?
$ ? z?s?
$ ? z?s?
$ z? o ? sas?
$ pin. no in1 cn1 cn2 in2 in3 cn3 3 4 14 15 19 20 cn4 in4 29 30 powgnd1 out 1f powvcc1 out 1r powgnd12 out 2r powvcc2 out 2f powgnd2 5 6 7 8 9 10 11 12 13 v cc v cc 20k 20k 1k 3 15 19 4 14 20 v cc v cc v cc 20k 20k 3.75k 30 29 180k 180k 7 6 8 5 180k 180k 11 10 12 13 9
BH6508FS ???? ic z? o ? sas?
$ pin. no powgnd3 out 3f powvcc3 out 3r powgnd34 out 4r powvcc4 out 4f powgnd4 21 22 23 24 25 26 27 28 31 mute4 1 ct 2 180k 180k 23 22 24 21 180k 180k 27 26 28 31 25 v cc v cc 2 v cc v cc 30k 1
BH6508FS ???? ic z? o ? sas?
$ pin. no vref 16 vcc 17 vg 18 ? ???s? ?o z? ? ???s? ?o z? clk 32 v cc v cc 30k 32 v cc 40k 10k  4  3 10p 10p 30k 20k 46k 3.7k 16
BH6508FS ???? ic ! ?> $ ?
q ?> $ ?
q ?> $ ?
q ?> $ ?
q ?t| wsmv?y ta = 2 5 c | powv cc =2.4v | v cc =2.4v | vg=7v | vref=1.2v | yyyyyyy f clk =176.4khz | ct=220pf | r l =8 ?  47 h  parameter symbol min. typ. max. unit conditions ??? ?v  powv cc   ?? ?v  v cc  ?^ ?v  vg  a pwm ??? ? z? on ? ?? ? ? z?|?? ? ? y ?yb ?
y ? ?yb ?) ?? ? 3 ? z?
mv ?y z? on ? ?? ? ? z?|?? ? ? y ?yb ?
y ? ?yb ?) ?? ? 3 ? z?
mv ?y a~ t c
\s?? 1? ? v 3?? ? v ?8 ?? ?? * t
: 1 ?8 ?? ?? * t
: 2 a? ?? ? z ? ? 3?? ?? mute1on ?? ?? ?y yyy off ?? ?? ?y i st i cc1 i g r on r in v oo g vc ? g vc v db v ol r on4 r in4 v oo4 g vc4 ? g vc4 v db4 v ol4 i so i si f clk1 f clk2 v mton v mtoff     16.0  50 y 12.0  1.5 y  10 y 2.5  17.8  150 y 21.0  1.5 y  10 y 2.5 24 95 165 40 1.68  0 1.6 1.2 1.1 20.0 0 14.0 0 0 3 1.1 22.3 0 23.0 0 0 3 31 120 176 44.1   3 3 2 2.0 24.0 50 16.0 1.5 10 3.5 2.0 26.8 150 25.0 1.5 10 3.5 38 145 185 48  0.72  a ma ma 
k 
mv db db mv v 
k 
mv db db mv v  a  a khz khz v v v cc 1 off 4ch ? ? ??q??w on ?w powv cc 1 4.5v ??q??w on ?w powv cc 1 4.5v f clk 1 44.1khz ? 1l
?-x`os??d?{ ch1 ch2 ch3 ch4
BH6508FS ???? ic ! s?
$ s?
$ s?
$ s?
$ 32 31 30 29 28 27 26 24 23 22 20 19 18 17 1 3 4 5 8 9 10 11 13 12 14 15 16 6 7 2 25 21   nf amp 20k clk fr rf 20k 20k vg v cc 20k 3.75k h bridge4   nf amp logic3 logic4 saw osc h bridge3 thermal shut down pre driver3 pre driver4   nf amp 20k 8 mute4 imute 1  1k 1  1k 20k ct fr rf 20k 20k vref 1k 1k h bridge1   nf amp logic2 logic1 mute4 h bridge2 pre driver2 pre driver1 1k + + 
+ 
+ + v a a 47  vo1 r l 1 sw1 sw2 sw2 8 1  1k 1  1k + + + v 47  vo2 r l 2 220pf 220pf 220pf vct ict rin2 v in 2 vref powv cc i q pow 1  4700p 2 1 rin1 1 2 2 1 v in 1 4700p 8 1  1 2 rin4 clk 4700p v in 4 1k 1  1k + + v 47  vo4 r l 4 8 1  1k 1  1  1k + + v 47  vo3 r l 3 
sw2 sw2 + + 
rin3 v in 3 vg ig i q pre prevcc 1  4700p 2 1 + + fig.1 a a a
BH6508FS ???? ic ! ?^
? ?^
? ?^
? ?^
? (1) pwm ??? z? ?tz n  fet ? 4 m?lh h ?????pb{ vref ???i ??w) ? ?yq
? 0 ?t z?`oz z? w?
qz pwm ??a??d!`?b{ \w??a?w!=b?m tp ?y????? pwm ? ?`?b{ ????x ?y<??pbwpz?a?? ?y! ?t??cz???x qs??b{ (2) ~ t c
\s? clk z? 32pin tz 0-v cc  v p-p w? t? ??b?\qt??z~ tu c
\`?b{~ tw t? ?uz? 0.6v p-p qs??o ct ?
? `oxi^m{ ( ??? * t
:u 176khz wz ct 1 220pf  clk z? 32pin u dc ??w ? ct z? 2pin x? 2.3v { qs?z???w z?xb?o ?l? qs??b{ (3) ??3????? ??9 su 145 ? typ. ts?q z? ?vu??^?z6|??9 su 135 c  typ. ts?q ?<`?b{ v 0 vcc ??? q u??t ?8 t v ? 0.1v ? 0.7v ~ t t t
BH6508FS ???? ic !  ;?  ;?  ;?  ;? 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 20k clk fr rf 20k 20k vg v cc 2.4v 7v 4700p traverse spindle 4700p 1k 20k 3.75k saw osc   nf amp nf amp nf amp 20k 20k fe servo ic te vref trv spindle clk ct fr rf 20k 20k 1  powv cc vref 1k 1k logic1 logic4 logic2 logic3 dc / dc converter dc / dc converter mute4  -com mute4 pre driver1 pre driver4 pre driver3 pre driver2 h bridge1 h bridge4 h bridge3 h bridge2 nf amp         thermal shut down 220p 4700p focus tracking 4700p + fig.2
BH6508FS ???? ic 9, 

1?? 6> 

1??  1??   1t ?   4  0.?yy ? ? ?? ? z? ?
q*/? ?    ?   ?  ? ? ? ?? ?y ?? ?? ?? ?? ?y ?? ?   1
?t ?
?t ?
?t ! ?; w ?? ?; w ?? ?; w ?? ?; w ?? ?? ?otxz\w ic wit? 1 f  s? ?zoxi^m{ ! ?> $ ?
qa
?> $ ?
qa
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qa
! ? ? ? ?? unit mm ?? ?? ? ? ? ? ? ? ?? ?? ?y ?y  0.?y ? z? ?
q*/? ?    ?    9, 

1?? 6> 

1??  1??   1t   1 
?t ?
?t ?
?t ?? ?? ? ? ? ? ?? ?? ? ? ? ?  0.??y ? z? ?
q*/? ?    ?    9, 

1?? 6> 

1??  1??   1t   1 
?t ?
?t ?
?t ?   4  0.?y ? ? ?? ? z? ?
q*/? ?    ?   ?  ? ? ?? ?? ? ? ? ? 9, 

1?? 6> 

1??  1??   1t   1
?t ?
?t ?
?t ssop-a32 0.15 0.15 ? 0.1 0.3min. 7.8 ? 0.3 5.4 ? 0.2 1.8 ? 0.1 0.11 1 32 0.36 ? 0.1 16 17 13.6 ? 0.2 0.8


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