HT9021S ? ??? led ? ? ? ? 85vac~265vac ?? 3w ? led ? HT9021S ?? 650v ??? ????? ????? ???????? HT9021S ????? ?? led ?? 3 % ?? ?????? ? HT9021S ?????? ? ocp led / cs vcc ???? ?? HT9021S sop8 ? ? ? 650v ? ? led ? 3 % ? ??????? ? ?? ? ?? ? led / ? cs ? vcc ? ??? ? uvlo ? ????? 130 ? ?? ? ? gu10 led ? led ? ? led ?? 1 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
?? HT9021S ? sop8 ??? ? ?? ?? ? so p - 8 , pb - free HT9021S HT9021S ?? ? ? cs 1 ????? vcc 2 ? gnd 3 rovp 4 ?? ? nc 5,6 ?? drain 7,8 ? ???? 2 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
??? ? ? 1 (symbol) parameter ? unit icc_max vcc ? 5 ma drain ??????? - 0.3~650 v cs cs ? - 0.3~6 v rovp ? ? - 0.3~6 v pdmax ?? ? 2 0.45 w t j - 40~ 150 t stg / ?? ? - 55 ~1 5 0 ? 1 ???? ?????? ? ??? ? 2 ??????????????? ? (symbol) parameter ? value unit pout1 (v in=230v 15%) @240ma < 3 w pout2 (vin=85v 265v) @180ma < 2 w fmax ??? 120 khz t a ? - 20~85 3 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
? ( ? t a =25 vcc = 7.5 v ) supply voltage ( vdd pin ) symbol parameter test condition min typ max unit ? vcc ?? vcc_clamp 1ma 7. 9 8. 5 v ?? uvlo_on vcc 6.8 7. 4 8.0 v ??? uvlo_off vcc ? 5.1 v ist vcc=uvlo_on - 1v 60 100 ua ? iop fop= 5 0khz 1 50 250 ua ? vcs_th 4 85 500 51 5 mv ? cs ? vcs_short 300 mv ?? tleb 500 ns ??? tdelay 1 00 ns ? ??? f max 120 khz d_max m ax duty 42 % ? fmin 3 khz rovp ? vrovp 0.5 v ? ??? rds_on vgs=14v/ids=0.5a 24 30 ???? bvdss vgs=0v/ids=250ua 650 v ??? tsd 160 tsd_hys 25 ?? t_comp 130 4 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
5 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
HT9021S ?? led ? ??????? 650v ????? ??????? HT9021S ? tl431 ? ?????? ??????? vcc vcc ?????? ?? HT9021S 7 .5 v ? ?? vcc ???? vcc ?r? HT9021S ???? dcm ??????? cs ??????? 500mv ???? cs ??? ?????? ???? ??? i_pk=0.5/rcs a cs ?? 500 ns ?? ? led ? io=0.5*i_pk*np/ns*tons/t =0.25*i_pk*np/ns =0.125v/rcs* np/ns (a) np ?? ns ?? rcs ?? rcs ??? ? ?? 0.8 a/650v ? nmos ? ????? HT9021S sop - 8 ?? 3 led ? ? ?????R ??? 42% ? ?? 100khz ????? led ???? led ? ?????? ?????????? ?????? f=np 2 *vled/(8*ns 2 *lp*io) lp ???? ? ocp ? leb HT9021S cycle - by - cycle current limiting ?? ?? cs ??? mosfet ? snubber ???????? cs ? rc ??? ?????? mosfet ? HT9021S ??? rovp ? ? rovp ??? 0.5v 6 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
led ???? ????? ??? ovp cs cs v r v l tovp ? ? ? vcs cs ??? (0.5v) vovp ????? tovp rovp ???? 6 10 * * 15 tovp rovp ? k ?? HT9021S ? 3kh z ?????? ?? otp ?? 130 ? HT9021S ?? ?? cs ??? ???????? ?? ?????? ??????? 160 ? HT9021S ? ??? 1 35 ?? HT9021S ??????? ocp led / cs vcc ??? vcc ?? led ?????? ????? led ??? 3kh z ?????? ? cs ?? ??????? ??????? led cs ????? vcc ??? vcc ??? ???????????? ????? pcb ht9 021 s pcb ????? ? vcc ?? vcc gnd ? ?????? ? ? bulk ???? ? ??? emi ?????? rovp s??? ? rovp ?? rovp pin ? ? rovp ?? drain ?????? ? 7 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S ovp cs cs v r v l tovp u u 6 10 * * 15 tovp rovp
?? sop8 ?? symbol dimensions in milimeters dimensions in inches min typ. max min typ. 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*45 0.015*45 h 5.791 6.197 0.228 0.244 l 0.406 1.270 0.016 0.050 ? 0 8 0 8 8 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification HT9021S
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