AP3983CP7-G1

NOT RECOMMENDED FOR NEW DESIGN CONTACT US AP3983B/C/D HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS Description Pin Assignments The DIODES™ AP3983B/C/D are series of high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions. Typical applications include charger, adapter for ADSL, home appliance power supply, LED lighting power supply and PC auxiliary power supplies. The AP3983B/C/D with built-in MOSFET, regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system output current. (Top View) CPC 1 7 FB 2 VCC 3 6 D CS 4 5 D GND SO-7 For AP3983B/C The AP3983B/C/D has good transient characteristics. Typically, minimal voltage of 4.3V at PCB side can be achieved for dynamic test of 5V application system. (Top View) The AP3983B/C/D provides operating frequency dithering function to improve EMC performance of power supply. The AP3983B/C/D also has built-in fixed cable voltage drop compensation and adjustable line voltage compensation. CPC 1 FB 2 The AP3983B/C/D solution has fewer component number, smaller size, and lower total cost. VCC CS The AP3983B/C is packaged in SO-7. The AP3983C/D is packaged in PDIP-7. 7 GND 3 6 D 4 5 D PDIP-7 For AP3983C/D Features              Primary Side Control for Eliminating Opto-Coupler Better Transient Characteristics Built-in N Channel MOSFET with 650 BVDSS Low Start-up Current: 0.2µA (Typ.) Internal Output Cable Voltage Drop Compensation Hiccup Function to Improve Short Circuit Protection Better Over Voltage Protection Better Over Temperature Protection Low Total Cost Solution Output Power Range (Note 1): AP3983B for 6W Adapter AP3983C (SO-7) for 7.5W AP3983C (PDIP-7) for 10W Adapter AP3983D for 18W Adapter Totally Lead-Free & Fully RoHS Compliant (Notes 2 & 3) Halogen and Antimony Free. “Green” Device (Note 4) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Notes: Applications      Adapters Set top boxes Auxiliary supplies Appliances LED drivers 1. Typical continuous power in a non-ventilated enclosed adapter measured at +50°C ambient. 2. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 3. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 4. Halogen- and Antimony-free "Green” products are defined as those which contain