onsemi

NCP1249BD65R2G  

AC DC Converters, Offline Switches

NCP1249BD65R2G Description

The NCP1249BD65R2G is an offline switch flyback controller designed for high-efficiency power conversion in a variety of applications. Manufactured by onsemi, this IC is part of the Power Management (PMIC) category and is housed in a 9SOIC package. Despite its obsolete status, the NCP1249BD65R2G remains a robust solution for engineers seeking reliable power management in surface-mount applications.

This controller operates with a switching frequency of 65kHz, ensuring efficient power delivery while minimizing electromagnetic interference (EMI). It features a wide supply voltage range of 10V to 30V, making it suitable for various input voltage scenarios. The device also includes comprehensive fault protection mechanisms, including overload, over power, over temperature, over voltage, and short-circuit protection, ensuring reliable operation under diverse conditions.

NCP1249BD65R2G Features

• Topology: Flyback
• Frequency - Switching: 65kHz
• Voltage - Supply (Vcc/Vdd): 10V to 30V
• Voltage - Start Up: 18V
• Duty Cycle: 80%
• Fault Protection: Overload, Over Power, Over Temperature, Over Voltage, Short Circuit
• Output Isolation: Isolated
• Internal Switch(s): No
• Mounting Type: Surface Mount
• Package: Tape & Reel (TR)
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• ECCN: EAR99
• REACH Status: REACH Unaffected
• HTSUS: 8542.39.0001

The NCP1249BD65R2G stands out due to its high efficiency and robust fault protection features. The flyback topology ensures isolated output, which is crucial for applications requiring galvanic isolation. The wide supply voltage range and high duty cycle further enhance its versatility and efficiency in various power management tasks.

NCP1249BD65R2G Applications

The NCP1249BD65R2G is ideal for applications requiring efficient power conversion and isolation. Its features make it suitable for:

• Adaptive Power Supplies: The wide input voltage range and high efficiency make it ideal for adaptive power supplies that need to handle varying input voltages.
• Wall Adapters: The compact surface-mount package and robust fault protection mechanisms ensure reliable operation in wall adapters.
• Consumer Electronics: The isolated output and comprehensive protection features make it suitable for consumer electronics where safety and reliability are paramount.
• Industrial Applications: The high efficiency and robust fault protection mechanisms ensure reliable operation in industrial settings where power management is critical.

Conclusion of NCP1249BD65R2G

The NCP1249BD65R2G, despite being obsolete, remains a reliable choice for power management applications requiring high efficiency and robust fault protection. Its flyback topology and isolated output ensure safe and efficient power delivery, making it suitable for a wide range of applications, from adaptive power supplies to consumer electronics. Engineers looking for a reliable and efficient power management solution will find the NCP1249BD65R2G to be a valuable component in their design arsenal.

NCP1249BD65R2G Documents

Download datasheets and manufacturer documentation for NCP1249BD65R2G

Datasheets :

NCP1249A/B       NCP1249      

PCN Obsolescence/ EOL :

Mult Devices 31/Jan/2019      

HTML Datasheet :

NCP1249A/B       NCP1249      

Environmental Information :

onsemi RoHS       onsemi REACH       Material Declaration NCP1249BD65R2G