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:
, LED PCB LED EMI 400V MOS TO-252-3
RM9003T
LED
:
LED T5/T8/T10 LED // LED
RM9003T :
RM9003T LED , MOS LED 。 RM9003T 。,,
,,。 130℃。 RM9003T IC,,, PF ; ,,PF 0.9,。
www.reactor-micro.com 2015-07-29
:
RM9003T
LED
1、 LED :
(1) : Vnor (Vrms) (2) LED :If(mA) (3) LED :Vf(V)
LED :N = (Vnor * 1.414-V1) /Vf ()。 V1 IC ,, 1.5W。 Vnor*1.414-V1<Vf*N.,V1 , , V1 。 2、
Vin AC,VLED LED ,ILED LED 。 LED N ,。
, V1,。 3、,
RM9003T 。 :
I=Vref/R2 : PCB 。 C1 ,Vin ,RM9003T Drive 。C1 LED :,C2 ,4.7uF/400V~22uF/400V。
www.reactor-micro.com 2015-07-29
RM9003T
LED
2 RM9003T ,LED LED 、
、; C1 , Vin ;C2 , Vin ;Rext LED 。
2. RM9003T
C1 AC LED LED n , 0uF ~ 4.7uF。 1.5W C1 。
C2 , Vin ,RM9003T OUT1 。C2 LED :,C2 , 4.7uF/400V~22uF/400V。 2)
3.