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R9128DS - SiRise

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R9128DS Non-isolated Buck LED Driver

LED R9128DS  550V MOSFET   DIP8 , 300mA  ,, EMI  PF 0.9         :-40 ~ 100℃  :DIP8 R9128DS LED ,,, EMI ,PF 0.9,, LED。 R9128DS 550V MOSFET, DIP8 , 300mA , 。 R9128DS ,,,, 。 R9128DS ,(85VAC~265VAC) LED。 LED 。 2.0 R9128DS AF -1- 2012-08 R9128DS 1 2 3 4 5,6 7,8 CS VCC FB S D GND I/O I POW I O POW MOS MOS.

Features

DS ,, LED。 R9128DS , 100uA( 150uA), 85V , =801K. 2.0 -3- 2012-08 R9128DS R9128DS ,, D6 。 R4 :R4 = ( ,D ,1mA ,VLED 。:PR4 ,: : 180-260, 36-80V,240mA。 R4 , 1,,(),D , R4=(1-0.167) =22.49K; 2, 260V, 80V(),。 D , , R9128DS LED ,, 。,CS , 420mV , CS ,。 :IPK = (mA),Rcs LED :ILED = (mA) R9128DS ,,, IPK ,。 : TON = ,L ,VIN ,VLED LED ,, 0 ,。 : TOFF = : L= ( f , L,VLED,IPK , VIN 。 , VIN ,( 20k~25kHz), VIN , 100kHz(,)。 30-100KHz,, 60KHz 。 2.0 -4- 2012-08 R9128DS FB FB , FB 1.2V() ,R9128DS ,,: VOOVP = 1.2 R2,R3 , R3=10k,( 15k, 8.2K), 1.2, 1.0( VFB2) , V.

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