The ON Semiconductor NCP1247AD100R2G is a highly integrated PWM controller designed for high-performance, off-line switched-mode power supplies. This controller is part of ON Semiconductor's extensive range of power management devices, known for their reliability and efficiency. The NCP1247AD100R2G is particularly well-suited for applications such as AC-DC adapters, open-frame SMPS, and LCD TV power supplies.

Key Features

• Fixed-Frequency Operation: The device operates at a fixed frequency, which simplifies the design of the magnetic components and the noise filtering network.
• Current-Mode Control: Offers inherent line compensation and excellent audio susceptibility performance.
• Frequency Foldback: Reduces the switching frequency under light load conditions to improve efficiency and minimize standby power consumption.
• Adjustable Overpower Compensation: Ensures robust operation under varying load conditions.
• Skip-Cycle Capability: Enhances efficiency at light loads by skipping unnecessary cycles.
• High-Voltage Startup: The integrated high-voltage startup circuitry allows for a quick and efficient startup with minimal standby power dissipation.
• Auto-Recovery Protections: Features include Overvoltage Protection (OVP), Overload Protection (OLP), and Short-Circuit Protection (SCP) to ensure the safety and reliability of the power supply and the end application.

Applications

The NCP1247AD100R2G is versatile and can be used in a variety of power supply designs due to its robust feature set. Its applications include:

• AC-DC Adapters for Laptops and Portable Electronics
• Open-Frame Switched-Mode Power Supplies (SMPS)
• Power Supplies for LCD TVs and Monitors
• Standby and Auxiliary Power Supplies

Quality and Environmental Compliance

ON Semiconductor is committed to providing environmentally friendly solutions. The NCP1247AD100R2G is RoHS compliant and lead-free, ensuring that it meets current environmental standards for electronic components. Additionally, it is designed to meet the rigorous demands of the industry, providing a reliable solution for power supply designs.