AP3917BUNIVERSAL AC VOLTAGE STEP DOWN POWER SWITCHERDescriptionPin Assignments The AP3917B is a universal AC voltage input step-down power (Top View) switcher, which is specially designed for home appliance and IoT
applications with non-isolated buck solution or offline flyback solution. NC 1 7 Drain The device integrates a 650V high performance Power MOSFET. Coordinating with a single-winding inductor, it uses fewer external NC 2 components and provides a low bill of material (BOM) cost solution. S 3 6 FB The AP3917B can achieve excellent regulation and high power efficiency. The peak current and switching frequency continuously S 4 5 BP reduce as the load decreases, so it can get excellent efficiency performance at light load and improve the overall system efficiency. The AP3917B has multiple protection features to enhance the system SO-7 safety and reliability. It has over temperature protection, under- voltage lock function, output short protection, overload protection, and Applications open-loop protection. Non-Isolated Home Appliances: AC Fans, Rice Cookers, Shavers; Milk Machines The AP3917B is available in the SO-7 package. IoT Applications Industrial Controls Features Standby and Auxiliary Universal 85V AC to 265VAC Input Range Internal MOSFET of 650V Maximal Peak Current: 280mA Typical Improved Constant Voltage: ±5%