onsemi

NCP1249AD65R2G  

AC DC Converters, Offline Switches

NCP1249AD65R2G Description

The NCP1249AD65R2G is an offline switch designed for flyback topology applications, manufactured by onsemi. This integrated circuit (IC) is specifically engineered for AC-DC conversion and is housed in a 9-lead SOIC package, suitable for surface mount applications. Despite being marked as obsolete, the NCP1249AD65R2G remains a robust solution for various power conversion needs, offering a comprehensive suite of fault protection features and a wide input voltage range.

NCP1249AD65R2G Features

The NCP1249AD65R2G several boasts key technical specifications that make it a reliable choice for power conversion applications:

• Topology: Flyback, which is ideal for isolated power supplies and offers high efficiency and simplicity.
• Mounting Type: Surface Mount, facilitating easy integration into compact and high-density designs.
• Fault Protection: Comprehensive protection against over load, over power, over temperature, over voltage, and short circuit conditions ensures robustness and reliability.
• Frequency - Switching: Operates at a of frequency 65kHz, balancing efficiency and electromagnetic interference (EMI) considerations.
• Voltage - Start Up: Requires a minimum startup voltage of 18V, ensuring reliable operation in various input conditions.
• Duty Cycle: Capable of up to 80% duty cycle, providing flexibility in design and operation.
• Voltage - Supply (Vcc/Vdd): Wide supply voltage range of 10V to 30V, accommodating a variety of input.
  sources- Package: Tape & Reel (TR), ensuring ease of handling and automated assembly processes.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), making it suitable for a wide range of environmental conditions without additional handling precautions.

NCP1249AD65R2G Applications

The NCP1249AD65R2G is well-suited for a variety of applications where isolated power supplies are required. Its flyback topology and comprehensive protection features make it ideal for:

• Consumer Electronics: Power supplies for devices such as televisions, monitors, and other consumer electronics where reliability and efficiency are paramount.
• Industrial Equipment: Isolated power supplies in industrial control systems, ensuring safe and reliable operation in harsh environments.
• Medical Devices: Power supplies in medical equipment where isolation is critical for patient safety and regulatory compliance.
• Telecommunications: Powering telecommunication equipment, including base stations and networking devices, where high efficiency and reliability are essential.

Conclusion of NCP1249AD65R2G

The NCP1249AD65R2G, despite its obsolete status, remains a viable option for designers seeking a reliable and efficient offline switch for flyback topology applications. Its wide input voltage range, comprehensive fault protection, and surface mount compatibility make it a versatile component suitable for a variety of power conversion needs. While newer models may offer enhanced features, the NCP1249AD65R2G continues to provide a robust and cost-effective solution for applications requiring isolated power supplies.

NCP1249AD65R2G Documents

Download datasheets and manufacturer documentation for NCP1249AD65R2G

Datasheets :

NCP1249      

PCN Obsolescence/ EOL :

Mult Devices 31/Jan/2019      

HTML Datasheet :

NCP1249      

Environmental Information :

onsemi RoHS       onsemi REACH       Material Declaration NCP1249AD65R2G