AP3771BK6TR-CG1

A Product Line of Diodes Incorporated AP3771 LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER Description Pin Assignments NEW PRODUCT The AP3771 is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. (Top View) Pin 1 Mark The AP3771 provides accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and the secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining good stability. The AP3771 can achieve excellent regulation and high average efficiency, yet meets no-load consumption less than 30mW. It can also achieve excellent dynamic performance while maintaining 30mW standby power with AP4340. GATE 1 6 FB GND 2 5 CPC VCC 3 4 CS The AP3771 has a built-in fixed cable voltage drop compensation function. The cable compensation voltage is set as 7% and 3% of the rated output voltage. It also has an adjustable built-in line compensation function to achieve tight CC. The AP3771 drives MOSFET to achieve the high switching frequency and high efficiency. SOT26 Applications  The AP3771 is available in SOT26 package.   Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Devices LED Driver Standby and Auxiliary Power Supplies Features              Primary Side Control for Tight Constant Current and Constant Voltage 30mW No-load Input Power Excellent Dynamic Performance with AP4340 (For 5V Application) MOSFET Driving Proprietary Adjustable Line Compensation for CC Variation Constant and Built-in 7% and 3% Voltage Drop Compensation Enhanced Audio Noise Suppression Open Circuit Protection Over Voltage Protection Short Circuit Protection SOT26 Package 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) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain