ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 1 of 7 4 g28 n rev. f001 general description ec4512 dummy load ?? led y triac {? led lWq?r fe a tures sot 23 - 6l b ? ? 1 0 v zener diode , 110v/220v ?? appl i c a tions led bulb absolute m ax i mum r a tings i z =30ma i aux =40ma phase_in 8v pp note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. continuous operation of the device at the absolute rating level may affect device reliability. pin configura tion pin number pin name function 1 vz 10v zener diode 2 gnd ground 3 cap2 charge capacitor 4 phase_in rectifier wave phase input 5 aux auxiliary load output 6 source dummy load output
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 2 of 7 4 g28 n rev. f001 ordering inf o r mation part no. package type mar king information remark ec4512 nnb3r sot23 - 6l 451 2 llll lllll lot no electr i cal characterist i cs t a = 25 c u nless o the r w ise specif i ed functional description triac {???}c@?}c? triac {?_P? triac ? _P^ triac ?cP] ( on and off ) r?F? ck traic P (off) r???}c triac |l?^ triac ? hold current ^ triac hold current ?r triac ??P]?F y ?? ? triac ?{ KlWqm???? triac @?}c . ? led ? ?rgg?Fc? led ?b?yb triac {??? {r?lW qm ? triac {???}?Q?????d (dummy load) c led KB trica { led {rl Wqmr . fig - 1 parameter symbol min ty p. max unit input resistor ri 6.46 6.8 7.14 k zener current i z 2 25 35 ma sink current i sink 40 45 ma output resistor r o 4 .3 7 .2 10.1 k charge current i chg 36 40 4 7 ua zener voltage v z 10 1 1 .5 1 3 v
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 3 of 7 4 g28 n rev. f001 fig - 2 fig - 1 & fig - 2 dummy load block function c . ? fig - 1 fig - 2 f ?? y???B?{ , ?????^?? fi g - 3 waveform waveform ? 0v ? triac ?^ (off), c??? traic ?^ (on). fig - 3 2 watts ?? load
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 4 of 7 4 g28 n rev. f001 fig - 4 10 k resistance load led ? 60hz ??L?r (t) ?F ^ trai c {c led ? ^ led ?^?? traic {?^?? ? led b triac {?{ triac ?r? led ?` 60hz ???_ c led ? ??c led led led ?? ?r? 60hz ?? 60hz ??P] led P] led ??F }? , @ led b traic {?lWqm??? ??? led fig - 3 triac ?^ ^o triac M triac hold current triac _P_P (on off on off) ., dummy load ^ triac ?^??^?KB led ? led ` 60hz ??? { triac ?^rP dummy load led K ? triac ?^?rg??o?d @ ?^ triac M hold current. fig - 2 ??? r2 M fig - 1 ?? comparator comparator 1&2 ? logic gate zy triac ?^c zero cross ??? , ^??? m8 rl1 rl2 M?? dummy load ^ . ?rg??? zero cross ???|l? flip flop ? 40ua current source comparator 3 switch ?M? t imer , zero cross ??F?|l flip flop, ?? 40ua D fig - 2 c2 c2 ?_ 2.8v r??DB??? c2 _? 0v ??? zero cross ?|l flip flop ?h? c2=2.8v ? zero cross ????rg t ^g? ???? m1 M??? ?rg t ^g auxiliary load ^ t ^^ triac . fig - 2 m1 ?Y chip(fig 1) dummy load ?c auxiliary load ?y\
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 5 of 7 4 g28 n rev. f001 fig - 5 phase_in & 68nf fig - 6 phase_in & 68nf & aux_o, dummy load & auxiliary load ?B fig - 7 phase_in & 68nf & aux_o, dummy load & auxiliary load o?B
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 6 of 7 4 g28 n rev. f001 fig - 8. phase_in & 68nf & source fig - 9. phase_in & vp
ec 451 2 dummy load for led bulb with triac. e - cmos corp. ( ww w .ecmos.com.tw ) page 7 of 7 4 g28 n rev. f001 outline di m e nsions (di m ensions shown in m illi m eters) sot23 - 6l
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