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| www..com PC SDC2921 SDC2921 PWM PG +3.3V+5V+12V / SDC2921 3.3V5V12V/ 280ms PG 280ms UVP PWM 16DIP-16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 V33 V5 V12 PT GND RT C1 C2 REM SS PG DET VCC OPOUT OPNEGIN 3.3V / 5V / 12V / 1 2 """" PG "" PG V1.0 www.sdc-semi.com 1 www..com 16 VADJ SDC2921 V33 1 V5 2 UVP V12 3 I OVP 250ms R O S R Q QN VCC 1.25V PT 4 0.62V VCC VCC REMOFF 280ms 11 PG REM 11 36ms 4.5ms REMON 10 SS DET 9 0.62V OSC R ERR AMP PWM C 2.45V QN 8 C2 RT 6 VADJ 16 IN- 15 OPOUT 14 D Q 7 C1 DEAD Vcc Vcc1,Vcc2 Icc1,Icc2 Pd Topr Tstg 5.5 5.5 200 200 -10~+70 -65~+150 V V mA mW V1.0 www.sdc-semi.com 2 www..com Vcc=5.0V,TEMP=25 1 2 3.3V 5V 12V PT 3.3V 5V 12V REM REM REM REM REM PG PG PG PG SS SS Vthdt Gv Bg Vn Vdssat Idoff Tr Tf V33ovp V5 ovp V12ovp VPT ovp V33uvp V5 uvp V12uvp VPTdis Tuvp Vremh Vreml Vremo Tremon Tremoff PG Vdet Rpup Rpg tpg Vsatpg Iss.sink Iss.source V1.0 www.sdc-semi.com Ipg=10mA 13 700 0.5 100 0.55 0.62 5 1 280 0.2 2 350 0.4 0.68 2.0 30 3.5 36 4.5 2.0 0.8 5.25 42 5.5 3.8 5.8 4.41 1.2 1.78 2.70 2.11 0.55 100 4.1 6.2 4.64 1.25 1.98 3.00 2.37 0.62 280 4.3 6.6 4.90 1.3 2.18 3.30 2.63 0.68 500 0.5V~3.5V 0dB OPNEG Id=100mA Vcc=Vs= Vd=0V 1.0 2 100 50 1.3 10 200 200 2.38 65 320 2.45 2.52 3.0 0.1 3.3 SDC2921 V V DB KHz V V uA ns ns V V V V V V V V ms V V V ms ms V KOHM KOHM ms V uA uA 3 www..com Icc Fosc RT=120KOhm 50 70 10 20 SDC2921 mA KHz V33 V5 V12 PT 47 KOHM 73 KOHM 47 KOHM TO VCC24 KOHMTO GND4.6 KOHM 1 2 3 4 V33 V33 V33 VCC 24K PT 4.6K 47K 73K 47K Rt Ct Ct 3.5V fosc=( Vrt / Rt ) / ( Vct * Ct )7200 / Rt ( fosc KHzRt Kohm) Rt=120K Fosc=60Khz REMOTE trem+toff SS V1.0 www.sdc-semi.com 4 www..com SDC2921 IssRT=120Kohm Iss 13uA Vss< Vthdt C1 C2 tss = Vthdt*Css/Iss250*Css tss ms, Css uF REMOTE trem+toff C1C2 SS +3.3V+5V+12V 0V tuvp REMOTEON tuvp IC CT SS V1.0 www.sdc-semi.com 5 www..com SDC2921 PT PTVptV CC Vcc=5VVpt=0.8V VPT>1.25VC1C2 PG PTVPT<0.62V DET DET 0.62V PG DET >0.62V IC PG V1.0 www.sdc-semi.com 6 www..com +5V SDC2921 +12V +3.3V 1 -12V 12V +5V +12V V33 V5 VIN+ VIN- 16 15 14 13 12 11 10 9 REM +5V PGout VS B OPP + 2 3 4 5 V12 OPOUT PT GND RT C1 C2 VCC DET PG SS REM -5V OPP 6 VS B 7 8 +12V VS B VS B R6 REM REM DIP16 V1.0 www.sdc-semi.com 7 www..com SDC2921 V1.0 www.sdc-semi.com 8 |
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