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R9128 Non-isolated Buck LED Driver

LED R9128  600V MOSFET   SOP-8 , 260mA  ,, EMI  PF 0.9         :-40 ~ 100℃ R9128 LED ,,, EMI ,PF 0.9,, LED。 R9128 600V MOSFET, SOP-8 , 260mA , 。 R9128 ,,,, 。 R9128 ,(85VAC~265VAC) LED。 LED 。 1.0 R9128CF -1- 2012-08 R9128 1 2 3 4 5,6 7,8 CS VCC FB S D GND I/O I POW I O POW MOS MOS D ( 25℃) CF.

Features

0uA), 85V , 1.0 =801K. -3- 2012-08 R9128 ,, D6 。 R9128 R4 :R4 = ( ,D ,1mA ,VLED 。:PR4 ,: : 180-260, 36-80V,240mA。 R4 , 1,,(),D , R4=(1-0.167) =22.49K; 2, 260V, 80V(),。 D , , R9128 LED ,, 。,CS , 420mV , CS ,。 :IPK = (mA),Rcs LED :ILED = (mA) R9128 ,,, IPK ,。 : TON = ,L ,VIN ,VLED LED ,, 0 ,。 : TOFF = : L= ( f , L,VLED,IPK , VIN 。 , VIN ,( 20k~25kHz), VIN , 100kHz(,)。 30-100KHz,, 60KHz 。 1.0 -4- 2012-08 R9128 FB FB , FB 1.2V() ,R9128 ,,: VOOVP = 1.2 R2,R3 , R3=10k,( 15k, 8.2K), 1.2, 1.0( VFB2) , VOOVP=90V, R2=890k , 910k () 。 VFB2 1.0-1.4 .

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