HT2358 ???????? pwm ???? ??? ?????? ????? burst mode ? ????? ? HT2358 ???? ?? ???? ????? HT2358 ?? ??? ?k?????? HT2358 ??2? pwm ???????? HT2358 ??? ?????? ????? HT2358 ???????? ?? ocp ? olp vdd ??????? uvlo ? ovp ? latch ? ??? mosfet ??? ?? 12v HT2358 ???? ???????? ??? emi ?????? ?? 20khz ??? ? ? ?????? HT2358 ???? rcc ??? ??????? ????? HT2358 ? dip8 ??? . ? burst mode ? 5ua ? ? 1.8ma ? ? ? ?2 ? ? ? 65khz ? ? ?? ocp ? vdd ?? ? ????? uvlo ? ? olp ? ovp ? latch ? ??? 12v ? ?? ? ?? zener ovp ? ? ?????? ac/dc ? ?? ? ? ? ? ? ??? ? ? sp2358 1 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
?? ? ? 230vac 15% 85-265vac open frame1 open frame1 HT2358 27w 16w ? 1 ?? 50 ??????? ?? HT2358 ? 8-pin dip8 ??? ? ?? ?? ? 8-dip8, pb-free HT2358 HT2358dp sp2358 2 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
?? ? ? nc 1 nc vdd 2 ? ? fb 3 ??? 4 ????? pwm ????? fb ???? ?????? pwm sense 4 ????? drian 5/6 ?? ????? gnd 7/8 ? ??? sp2358 3 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
? (symbol) parameter ? unit drain voltage(off-state) ??? -0.3~600 v vdd dc ? 30 v v fb fb ? -0.3~7 v v cs cs ? -0.3~7 v t j -20~150 t stg ? -40~150 v cv vdd ?? 28 v i cc vdd dc ? 10 ma ??????????? ?????? ? (symbol) parameter ? value unit vdd vdd ? 10~30 v t a ? -20~85 ? ( ? vdd=16v ta=25 ) supply voltage (vdd) symbol parameter test condition min typ max unit vdd_op operation voltage 30 v uvlo_on turn on threshold voltage 6 7 8 v uvlo_off turn-off threshold voltage 12.5 13.5 14.5 v i_vdd_st start up current vdd=13v 5 20 ua i_vdd_op operation current v fb =3v 1.8 2.5 ma vpull_up pull-up pmos active 13 vdd_clamp vdd zener clamp voltage ivdd=10ma 30 32 34 v ovp(on) over voltage protection voltage cs=0.3v,fb=3v, ramp up vdd until clock is off 26 28 30 vlatch_release latch release voltage 5 feedback input section v fb _open v fb open loop voltage 3.9 4.2 v sp2358 4 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
avcs pwm input gain vfb/ vcs 2 v/v vref_green the threshold enter green mode 2.1 v vref_burst_h the threshold exit burst mode 1.3 v vref_burst_l the threshold enter burst mode 1.2 v i fb _short fb pin short current fb shorted to gnd 0.4 ma v th _pl power limiting fb threshold 3.7 v t d _pl power limiting debounce 80 88 96 ms z fb _in input impedance 16 k ? max_duty maximum duty cycle 75 80 85 % current cs section sst soft start time 4 ms tleb leading edge blanking time 220 ns z cs input impedance 40 k ? t d _oc ocp control delay 120 ns v th _oc ocp threshold fb 3v 0.75 v vocp_clamping 0.9 v oscillator section fosc normal oscillation frequency vdd=14v,fb=3v, cs=0.3v 60 65 70 khz fosc_bm burst mode frequency 22 khz ? f_temp frequency variation versus temp. deviation temp = -20 to 85 1 % ? f_vdd frequency variation versus vdd vdd = 12 to 25v 1 % f_shuffling shuffling frequency 32 hz ? f_osc frequency jittering 4 % mosfet section bvdss mosfet drain-source breakdown voltage 600 v ron static drain to source on resistance 5 ? sp2358 5 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
sp2358 6 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
HT2358 ???????? pwm ?????? ??????? ??? burst mode ????????? ?????2 ?????????? ?????? ? HT2358 ?????? ?????? HT2358 ? 5ua vdd ?? uvlo ??? ???? ???? ???????? ac/dc ??? 90vac-264vac ? 2m ? 0.125w ?? vdd ?????? ? HT2358 ???? 1.8ma ? ? burst mode ?? ??????? vdd ? ? HT2358 4ms vdd ? uvlo(off) cs ????? 0.15v ???? ?? burst mode ??????? ? mosfet ???? ?????? ? mosfet ????? ?????? HT2358 ? burst mode ??? ???????? / ? fb ????? burst mode ????? ????? vdd ?????? fb ? 2?? ?????????? ??????? HT2358 ??? 65khz ???? ? ? HT2358 ??? cycle-by-cycle current limiting ??? ? cs ??? mosfet ? snubber ?? ?????? cs ? rc ? ?????? ?? mosfet pwm ??? ?? fb ??? ??2 pwm ?2? ??????? ? ccm ????? ?? sp2358 7 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
? ?????1???? emi HT2358 ??? ?????? ???? ???? emi ?? HT2358 ? 12v ?? ? mosfet ?? HT2358 ??????? ??? ocp olp ? vdd ????? uvlo ?? ovp ? latch ? fb ? ? td_pl ? ?? mosfet vdd uvlo ??? vdd ??? vdd uvlo ? mosfet ??? sp2358 8 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
?? dip8 ?? symbol dimensions in milimeters dimensions in inches min max min max a 3.710 4.310 0.146 0.170 a1 0.500 0.020 a2 3.200 3.600 0.126 0.142 b 0.350 0.650 0.014 0.026 b1 1.524(bsc) 0.060(bsc) c 0.204 0.360 0.008 0.014 d 9.000 9.500 0.354 0.374 e 6.200 6.600 0.244 0.260 e1 7.320 7.920 0.288 0.312 e 2.540(bsc) 0.100(bsc) l 3.000 3.600 0.118 0.142 e2 8.200 9.000 0.323 0.354 sp2358 9 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
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