AP3768MTR-G1

AP3768 LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER Description Pin Assignments NEW PRODUCT The AP3768 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) The AP3768 provides accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining stability. The AP3768 achieves excellent regulation and high average efficiency, yet meets the requirement for no-load consumption less than 30mW. CS 1 8 BIAS VCC 2 7 CPR OUT 3 6 FB GND 4 5 CPC The AP3768 has the built-in programmable cable voltage drop compensation function, which makes it flexible to accommodate various cables with different gauges and lengths. SO-8 The AP3768 is available in SO-8 package. Applications  Features            Primary Side Control for Eliminating Opto-coupler and Secondary CV/CC Control Circuitry 30mW No-load Input Power Programmable Output Cable Voltage Drop Compensation Proprietary CC Tightening Technique to Achieve Vertical CC Profile Compensation for External Component Temperature Variations Flyback Topology in DCM Operation Random Frequency Adjustment to Reduce System EMI Built-in Soft Start Over Voltage Protection Short Circuit Protection SO-8 Package Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)    Notes: Adapter/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Apparatus LED Driver Standby and Auxiliary Power Supplies 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