General Description
The AP3765 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.
   
Features
• Primary Side Control for Rectangular Constant
    Current and Constant Voltage Output
• Sub-microampere Start-up Current
• 30mW No-load Input Power Feasible
• Tight CV Regulation Performance
• Eliminates Opto-coupler and Secondary CV/CC
    Control Circuitry
• Eliminates Control Loop Compensation Circuitry
• Flyback Topology in DCM Operation
• Random Frequency Modulation to Reduce
    System EMI
• Built-in Soft Start
• Open Feedback Protection
• Short Circuit Protection
• SOT-23-6 Package
   
Applications
• Adapters/Chargers for Cell/Cordless Phones,
    PDAs, MP3 and Other Portable Apparatus
• LED Drivers
• Standby and Auxiliary Power Supplies