The NCP1231D65R2 is a high-performance, fixed-frequency current-mode controller designed by ON Semiconductor for AC-DC converters. This product is specifically tailored for the demanding requirements of offline power supplies, including those found in desktop monitors, televisions, and other consumer electronics that require high levels of reliability and efficiency.

Key Features

• High-Efficiency Operation: The NCP1231D65R2 is engineered to optimize power efficiency, which reduces energy consumption and heat generation, thereby extending the life of the end product.
• Fixed-Frequency Operation: With its fixed-frequency operation, this controller provides a stable switching frequency that simplifies the design of the magnetic components and the overall power supply design.
• Current-Mode Control: The current-mode control offers excellent output load regulation and a reduced component count, which can lead to cost savings in the manufacturing process.
• Frequency Foldback: The inclusion of frequency foldback improves the efficiency at light loads and provides a soft-start capability, minimizing stress on the power supply during startup.
• Auto-Recovery Overcurrent Protection: This feature helps in protecting the power supply and the end device from damage due to overcurrent conditions.
• Brown-Out Protection: The NCP1231D65R2 is equipped with brown-out protection, ensuring stable operation during abnormal input voltage conditions.

Applications

The controller's robust design and feature set make it suitable for a wide range of applications, including but not limited to:

• Power supplies for LCD TVs and monitors
• Offline adapters
• Power supplies for printers and other office equipment
• Consumer electronics power supplies

Technical Specifications

The NCP1231D65R2 operates at a fixed frequency of 65 kHz and is available in a compact PDIP-7 package. Its high level of integration allows for a reduced external component count, which can be beneficial in designing compact power supplies.

ON Semiconductor's commitment to quality and performance is evident in the NCP1231D65R2, making it a reliable choice for designers looking to create efficient and durable power solutions.