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NCP1239JD65R2G Description
NCP1239JD65R2G Description
The NCP1239JD65R2G is a high-performance offline switch flyback controller designed for power management applications. Manufactured by onsemi, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a 7SOIC package. Although it is marked as "Not For New Designs," the NCP1239JD65R2G remains a robust solution for existing systems requiring reliable power conversion.
NCP1239JD65R2G Features
- Operating Temperature: The NCP1239JD65R2G is rated for an operating junction temperature of up to 150°C, making it suitable for high-temperature environments.
- Topology: Utilizing a flyback topology, this controller offers efficient power conversion with minimal external components.
- Mounting Type: Surface mount technology ensures ease of integration into compact and high-density PCB designs.
- Control Features: The device includes an enable (EN) pin and soft start functionality, which helps in reducing inrush currents during startup.
- Fault Protection: Comprehensive protection features include current limiting, overload, over power, over temperature, over voltage, and short-circuit protection, ensuring reliable operation and safeguarding against various fault conditions.
- Frequency - Switching: A switching frequency of 65kHz allows for high-frequency operation, which is beneficial for reducing the size of external components.
- Voltage - Start Up: The device requires a startup voltage of 12V, ensuring stable operation from the beginning.
- Duty Cycle: With a maximum duty cycle of 80%, the NCP1239JD65R2G can handle a wide range of output power requirements efficiently.
- Output Isolation: The isolated output design ensures safety and reliability in applications where galvanic isolation is necessary.
- Voltage - Supply (Vcc/Vdd): The wide input supply voltage range of 8.8V to 35V provides flexibility in power source selection.
- Compliance: The NCP1239JD65R2G is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards.
- Packaging: Available in a tape and reel (TR) package, it is suitable for automated assembly processes.
NCP1239JD65R2G Applications
The NCP1239JD65R2G is ideal for a variety of applications where efficient power conversion and robust protection features are required. Key applications include:
- Adaptive Voltage Controllers: Suitable for systems requiring dynamic voltage adjustments to optimize power consumption.
- Battery Chargers: Provides efficient power conversion for charging batteries in portable devices.
- Power Supplies: Ideal for offline power supplies in consumer electronics, medical devices, and industrial equipment.
- Telecommunications: Can be used in telecom infrastructure to provide stable and isolated power to critical components.
- Automotive: Suitable for automotive applications where high-temperature operation and fault protection are essential.
Conclusion of NCP1239JD65R2G
The NCP1239JD65R2G is a versatile and reliable offline switch flyback controller that offers a comprehensive set of features and protections. Despite being marked as "Not For New Designs," its robust performance and wide range of applications make it a valuable component for existing systems. The combination of high-temperature operation, efficient power conversion, and comprehensive fault protection ensures that the NCP1239JD65R2G remains a reliable choice for various power management needs.



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