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300MS LT1086 HCPL7840 NJM25 HI580000 B0409 MUR12 BPC2508
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  Datasheet File OCR Text:
  ???? www . silicore. com . cn chmc 1/8 ?? mosfet ?? p w m ? ob2353 / 2354 / 2355 / 2358 ob2353 /2354 /2355 /2358 ??? ?? mosfet ?? p w m ?? ? ? ? ?? ?? ? ? ?? ? ?? 65kh z ? ? ? ?? e m i 4 m s ? ? ? ? ?? ? ? ? ??? ? ? ? ? ? ??? ??????? dip8-300-2.54 ob2353/2354/2355/2358 dip8 ???? ??? ??? mosfet 5 a ? 1.5ma ?2 ? 20w no y-cap ?? ??? emi ? ??? ? ?? (burst mode) ?? ?? dvd/dvb/ ? ?? / / ??? ??? tiger electronic co.,ltd
silicor e ???? d3873/d3874/d3875/d3876 ???? www . silicore. com . cn chmc 2/8 ?? d1 q 1 q 2 ? uv l o vc c cl a m p ? os c ? ? bu r s t m ode ol p de l a y 50 m s - + vt h - + oc s r q q __ _ le b so f t ocp st a r t vc c fb dr a i n se n s e gn d vc c - d 5v q 3 ??
silicore ???? d3873/d3874/d3875/d3876 ???? www. silicore. com. cn chmc 3/8 ? ?? ? 1 vcc-g mos? 2 vcc ? 3 fb 4 sense 5 6 drain ? 7 8 gnd ? 190v 260v 85v 265v ? ? ? ob2353 6w 8w 5w 7w ob2354 10w 14w 8w 12w OB2355 12w 18w 10w 15w ob2358 14w 20w 12w 18w ? ? ??? v drain 650 v ??? v gs 20 v ob2353 0.8 ob2354 1.0 OB2355 2.0 ? ob2358 i d 4.0 a ?? v vcc 25 v ? -0.3 ~ 7.0 v ? p d 1.5 w tj +160 ? tamb -20 ~ +85 ? tstg -55 ~ +150
silicore ???? d3873/d3874/d3875/d3876 ???? www. silicore. com. cn chmc 4/8 ? ( ta=25 ,vcc=13.5v) Z? ? istart vcc=12.5v 5 20 a icco v fb =3.0v 1.5 3.0 ma ? uvlo_ off 12.3 13.5 14.7 v ??? uvlo_ on 6.8 7.8 8.8 v ? ovp_ on cs=0v,fb=3.0v 23.0 25.0 27.0 v vcc ? vcc_ clamp icc=10ma 27.0 v fb ? v fb_open 4.9 5.2 5.5 v fb i fb_start 1.40 ma v th_0d ?? 1.15 v fb ?? v th_pl 3.70 v ?? t d_pl 50.0 ms z fb_in 3.70 k z sense_in 40.0 k ?? v th_oc fb=3v 0.70 0.75 0.80 v ?? t d_oc ? gate ?? 120 ns ? t sst 4 ms ?? t_ leb 270 ns ?? ? fosc 59 65 71 khz ?? f_temp 25 tamb +85 5 10 % ??? f_vcc 5 % ?? d_max fb=3.0v,cs=0v 70 80 90 % ??? f_burst 30 khz ?? f mod 1.5 2.0 3.0 khz mosfet ob2353 650 ob2354 650 OB2355 650 ??? ob2358 v ds v gs =0v i d =250ua 650 v ob2353 13 15 ob2354 9.5 11.5 OB2355 4.5 5.0 ? r ds on v gs =10v i d =0.5a 2.2 ob2353 0.8 ob2354 1.0 OB2355 2.0 ? i d 4.0 a ob2358 ob2358
silicore ???? d3873/d3874/d3875/d3876 ???? www. silicore. com. cn chmc 5/8 ob2353/2354/2355/2358 ????????pwm ?mosfet?????emi, ???? ?.??????????pwm????? ???????????????? ????????????????? ???mosfet??? ???????????? 1.?? ???vcc ?????? ???2m?,??????? ?vcc ?? vcc ??????1 2??? ??????????????? ?vfb????????????30khz ?????mosfet???????? ??????65khz,?????? ? 3 ????????4ms???? ??????????? v th_oc ? ??? 4?? ?? emi ????????? ?2khz ?????????? emi ? ? 5? ?? mosfet ?????? 270ns ?????????? sense ???? ???? pwm ???????? 6?2 ????/???/????
silicore ???? d3873/d3874/d3875/d3876 ???? www. silicore. com. cn chmc 6/8 ?????????2?? ?ob 387x ??2??????? 7? ??mosfet??????? mosfet???????emi?????? ???emi???vccvcc-g??k???? emi?? 8 ?????????????(cycle-by-cy cle current limit)?(over load protection)????? ??????? 1).? ????????????? ?? mosfet ???????? ??????????? ?? fb ? fb ?? 2). ? ?? fb ?? fb ??????? 50ms ?????????? 3). ? ????? l.e.b??? 270ns ????? ????? 0.75 ? ???? ??????? 4 . ????? v cc ?????25v??????? ???????? ????? d387x ????? 13.5v/7.8v ? vcc ?? cin ? 13.5v,?vcc ???? 5. ????? ? ??? 18v? mosfet ??
silicor e ???? d3873/d3874/d3875/d3876 ???? www . silicore. com . cn chmc 7/8 ??? u1 wl 43 1 1 2 3 4 d1 - 4 d5 t1 r2 c2 d6 c3 r1 r3 c8 vc c se n s e gn d fb c1 ac i n d7 r4 c4 c5 c7 r5 r6 c6 r7 r8 l1 dc o u t d3 8 7 4 r1 1 dr ai n vc c - d
silicor e ???? d3873/d3874/d3875/d3876 ???? www . silicore. com . cn chmc 8/8 ?? dip8 mm


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