AP3983C Datasheet | Diodes Incorporated

Description Pin Assignments The 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. 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. 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 pensation and adjustable line voltage pensation. The AP3983B/C/D solution has fewer ponent number, smaller size, and lower total cost. The AP3983B/C is packaged in SO-7. The AP3983C/D is packaged in PDIP-7. (Top View) CPC 1 FB 2 VCC 3 CS 4 7 GND 6D 5D SO-7 For AP3983B/C (Top View) CPC 1 FB 2 VCC 3 CS 4 7 GND 6D 5D 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: 0.2A (Typ.) - Internal Output Cable Voltage Drop pensation - 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 Ro HS pliant (Notes 2 & 3) - Halogen...