DK501

DK503 : Chip power pin Chip power pin Feedback foot Power supply pin Input Pin, external rectified DC input voltage http://www.dkpower.cn 2 EXTREME WORKING RANGE Project Symbols Min Supply voltage VDD US -0.3 PIN voltage UPV -0.3 Breakdown Voltage UPP -0.3 Peak current IPEAK Total dissipation power PTOT Operating temperature -25 TR range Storage temperature -55 TSTG range Welding temperature TW DK503 Typ 800 280/5S Max 7 VDD+0.3 700 700 125 150 Unit V V V mA mW ℃ ℃ ℃ ELECTRICAL CHARACTERISTICS（TA = 25℃ Unless otherwise stated） Description VDD operating voltage VDD startup voltage VDD restart voltage VDD protection voltage Power tube withstand voltage Peak current pr.