AL17050WT-7 Diodes Incorporated

AL17050 UNIVERSAL HIGH VOLTAGE STEP DOWN CONVERTER Description Pin Assignments The AL17050 is a universal AC high voltage input step down regulator that provides accurate constant voltage (CV) and outstanding (Top View) dynamic performance without requiring an opto-coupler over line and Load regulation. Typical applications are offline low power applications including home appliance applications and IoT V 1 5 DRAIN CC applications. Working with a single winding inductor and integrating a 500V FB 2 MOSFET internal can make it use fewer external components and create a low Bill Of Material (BOM) cost solution. The AL17050 achieves excellent regulation and high power efficiency. 4 SOURCE 3 SOURCE The characteristics of max peak current and driving frequency vary as the load change can get excellent efficiency performance at light load and improve the overall average efficiency. SOT25 The AL17050 has rich protection features to enhance the system safety and reliability. It has Over Temperature Protection, V Under CC Voltage Lock function, Output Short Protection, Over Load Protection and Open Loop Protection. Applications The AL17050 is available in the SOT25 package. Home Appliance Applications IoT Applications Industrial Controls Features Standby Power Universal 85 to 265 V Input Range AC Constant Voltage (CV) Control Internal MOSFET up to 500V Low Operation Current: 100A (Static) Under Voltage Lock Out (UVLO) Output Short Protection Over Load Protection Over Temperature Protection (OTP) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See AL17050 Typical Applications Circuit D4 R1 U1 C5 FB RF1 D1 L1 DRAIN C4 L R2 Vcc Source L2 V OUT C2 C3 C1 D3 C6 R3 D2 N Gnd Pin Descriptions Pin Number Pin Name Function 1 Control Circuit Power Supply V CC 2 FB Regulator Feedback 3,4 SOURCE Internal power MOSFET Source. Ground reference for V and FB Pins CC 5 DRAIN Internal power MOSFET Drain. High voltage current source input Functional Block Diagram V Power DRAIN CC Driver Logic V REF FB CS Limit Control R V CS LIMIT FB Protection SOURCE 2 of 15 April 2018 AL17050 Diodes Incorporated www.diodes.com Document number: DS40584 Rev. 2 - 2 ADVANCED INFORMATION AL17050