The NCP1205 combines a true Current Mode Control modulator and a demagnetization detector to ensure full Discontinuous Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi−Resonant operation, also called critical conduction operation). With its inherent Variable Frequency Mode (VFM), the controller decreases its operating frequency at constant peak current whenever the output power demand diminishes

FEATUREs
• Natural Drain Valley Switching for Lower EMI and Quasi−Resonant
   Operation (QR)
• Smooth Frequency Foldback for Low Standby and Minimum Ripple
   at Light−Load
• Adjustable Maximum Switching Frequency
• Internal 200 ns Leading Edge Blanking on Current Sense
• 250 mA Sink and Source Driver
• Wide Operating Voltages: 8.0 to 30 V
• Wide UVLO Levels: 7.2 to 15 V Typical
• Auto−Recovery Internal Short−Circuit Protection (OCP)
• Integrated 3.0 mA Typ Startup Source
• Current Mode Control
• Adjustable Overvoltage Level
• Pb−Free Packages are Available*

APPLICATIONs
• High Power AC/DC Adapters for Notebooks, etc.
• Offline Battery Chargers
• Power Supplies for DVD, CD Players, TVs, Set−Top Boxes, etc.
• Auxiliary Power Supplies (USB, Appliances, etc.)