c o p y r igh t @ w i n s em i microelectronics c o . , lt d . , a l l ri g h t r e s er v ed . rev. 1.0 july .201 1 ws ws ws ws 2910 2910 2910 2910 ? ? led ??? ??? ? 8~450v ? ????????a?? ? pwm ? ??? ? dc/dc ac/dc led rgb led ?? ??? led ???? ?? ws 2910 ???? led ic ? ? rt ??? ws 2910 ?? ????? ???? ws 2910 ? 8~450v ? ????? ??? ??? pwm ????? 0~100% ? ?????? ? 0~250mv ? ? led ws 2910 ??? led ws 2910 ????? ???? pwm ? ?? ? ? ws 2910 ?? ? ??? led ???? led ws ws ws ws 2910 2910 2910 2910 ?? led led led led ws ws ws ws
steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 2 / 7 ws ws ws ws 2910 2910 2910 2910 ?? ?? ? vin 1 ? ?? (8-450v) cs 2 ??? fet ? ? 2 50m v l d ?? gate ?? gnd 3 ? g a te 4 ? mosfet ? pwmd 5 pwm ? pw m ? gat e ? vd d ?? vdd 6 ?? ? ? ? ? vd d gn d ? ? esr ( 0. 1 f) ld 7 ? ? ? ? 2 50 m v ? ? ? rt 8 ?? ? ? r t ? ? ? ? ? ??? r t gat e ? ? k ? ?????? ??? w w w w s s s s 2910s 2910s 2910s 2910s p p p p dvf dvf dvf dvf yww yww yww yww s = sop8 p: p = pb-free package d: ? v: ? ( ? 1-9) f: y: year code ( 1:2011; 2:2012 ) ww: week code (1-52) ws ws ws ws
steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 3 / 7 ws ws ws ws 2910 2910 2910 2910 ? ? ?? ? 8-pin sop8, pb-free WS2910sp WS2910sp ? ? vin ? 10-450 v rt rt ?? 226(1000) kohm ta ? -20 to 85 ? ? vin dc ? -0.5-470 v vdd ?? 12 v cs, ld, pwmd, gate, rt ? - 0 . 3 ~(vdd+0. 3 ) v tj -40 t o + 1 5 0 tstg ? -65 t o + 1 5 0 8-lead s o ic 6 3 0 m w ? : ?? ???? ?? ???????
steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 4 / 7 ws ws ws ws 2910 2910 2910 2910 ? ( ? t a = 2 5 vin= 12 v) min typ max vindc dc ? 1 1 1 1 dc ? 10 - 4 5 0 v iin s d ??? pwmd ? 0. 6 4 1 m a ?? vdd ??? v i n=10 v gat e 5 0 0 p f r o sc = 2 2 6 koh m pwmd v dd 7. 2 5 7.5 7. 7 5 v vdd, li n e vdd v i n=10 - 4 5 0 v gate 50 0pf ? r o sc= 2 2 6 k o h m pwmd v dd 0 1 m v vdd, l o ad vdd idd=0-1.0 ma gate 5 0 0pf ? r o sc= 2 2 6 k o h m pwmd v dd 0 1 0 0 m v uvlo vdd ?? ? vdd 6. 4 5 6. 6 7 6. 9 5 v uvlo vdd ?? vdd ? 5 0 0 5 9 0 6 6 0 m v iin,max ? u v lo ?? ?? v i n=10v 5 m a pwm ven pwmd ?? v i n=10v 0.8 1. 8 2 2.5 v ren pwm d v pw m d=5v 80 1 2 0 1 6 0 k ? ? vcs,th ocp ?? -40 steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 5 / 7 ws ws ws ws 2910 2910 2910 2910 ws 2910 ?????? ?? led ????? ?? led ?? ?? ????? ? led pwm ?? rt ??? ? ? ??? ? ws 2910 ? rs gate ?? leb ? ????? ?? fet ? ? rcs cs ? ? leb ? cs cs ?? ld ??? 250mv ? rs ? ? ???? rs gate ? ? rs gate ? ?? 30% 1?? ???????? ??? 50% ? ? ? ? ???? 2? ???? led ? ???? ????? ???? ??? 50% ? ? led ??? ? ????? ? xn2910 ?????? ????? ? ws 2910 ? vin ? ? ?? 8~450v ws 2910 vdd 7.5v ?? ? ???? ? ?? K vdd ?? esr ? ??? ws 2910 ? vdd ??? ?? ???? ? ? vdd ??? 12v ? vin ??? 450v ?? ?? ic ??? ws 2910 cs ???? ???? 250mv ? ? ?? ld ? ? ?? rs ??? ?????? gate ? ? 320ns ?? ????? ?? fet ???? ? ??? ?? rcs cs ?? rc ? ? ????? ??? ? 80ns ????? ? ?? ???? ?? ws 2910 rt ? ??? rt ?? ws 2910 ??? ? ? ??? rt gate ? ws 2910 ?????? ?? ??? gate ws 2910 gate ? fet ? 100khz ???? 25nc fet ? >100khz ? ??? 15nc fet ? ? led ???? a ??? 250mv ?? ? ? led ? rcs ??? vdd ??? ld ? ? 250mv ????? rcs ? ???
steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 6 / 7 ws ws ws ws 2910 2910 2910 2910 b ??? led ld ?? 0~250mv ?? ?? led ?? 250mv ?? ld vdd ?? ? ld ? gnd ? 0 ? 420ns ??? ?????? fet ? 420ns ? ld=gnd ? led ? 0 ?? ? led ? ? 0 led ? pwmd pwm pwmd ?????? pwm pwm ?? 0 ? gate ? pwmd ? ? ? gate pwmd ?? ? ? ws 2910 pwmd ? ?? led ??? ?? ?? pwm ? ? ws 2910 pwmd vdd
steady, steady, steady, steady, keep keep keep keep you you you you advance advance advance advance 7 / 7 ws ws ws ws 2910 2910 2910 2910 sop8 sop8 sop8 sop8 package package package package outline outline outline outline dimensions dimensions dimensions dimensions s s s s y y y y mbol mbol mbol mbol dimensions dimensions dimensions dimensions in in in in milimeters milimeters milimeters milimeters dimensions dimensions dimensions dimensions in in in in inches inches inches inches min min min min t t t t y y y y p. p. p. p. max max max max min min min min t t t t y y y y p. p. p. p. max max max max a 1.346 1.752 0.053 0.069 a1 0.101 0.254 0.004 0.010 b 0.406 0.016 c 0.203 0.008 d 4.648 4.978 0.183 0.196 e 3.810 3.987 0.150 0.157 e 1.016 1.270 1.524 0.040 0.050 0.060 f 0.381* 4 5 0.015* 4 5 h 5.791 6.197 0.228 0.244 l 0.406 1.270 0.016 0.050 ? 0 8 0 8
|
