onsemi NCP1250BP65G

The NCP1250 implements a standard current mode architecture where the switch−off event is dictated by the peak current setpoint. This component represents the ideal candidate where low part−count and cost effectiveness are the key parameters, particularly in low−cost ac−dc adapters, open−frame power supplies etc. Capitalizing on the NCP120X series success, the NCP1250 packs all the necessary components normally needed in today modern power supply designs, bringing several enhancements such as a non−dissipative OPP.

• Fixed−Frequency 65 or 100 kHz Current−Mode Control Operation
• Internal and Adjustable Over Power Protection (OPP) Circuit
• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions
• Internal Ramp Compensation
• Internal Fixed 4 ms Soft−Start
• 100 ms Timer−Based Auto−Recovery Short−Circuit Protection
• Frequency Jittering in Normal and Frequency Foldback Modes
• Option for Auto−Recovery or Latched Short−Circuit Protection
• OVP Input for Improved Robustness
• Up to 28 V VCC Operation
• +300 mA/−500 mA Source/Sink Drive Capability
• Less than 100 mW Standby Power at High Line
• EPS 2.0 Compliant
• These are Pb−Free Devices

• ac−dc Converters for TVs, Set−top Boxes and Printers
• Offline Adapters for Notebooks and Netbooks