onsemi

NCP1244AD100R2G

NCP1244AD100R2G Description

The NCP1244AD100R2G from onsemi is a high-performance offline switch IC designed for flyback topology applications. This surface-mount device operates with a 100kHz switching frequency and supports an input voltage range of 8.9V to 28V, making it suitable for a variety of power supply designs. With a 12V startup voltage and an 80% duty cycle, it ensures efficient power conversion while maintaining stability. The IC is isolated and complies with ROHS3 and REACH environmental standards, though it is marked as obsolete in the product lifecycle. Packaged in 7SOIC and supplied in Tape & Reel (TR), it is optimized for automated assembly processes.

NCP1244AD100R2G Features

• Comprehensive Fault Protection: Integrates current limiting, overload, over-power, over-temperature, and over-voltage protection for robust operation.
• Wide Input Voltage Range (8.9V–28V): Enhances flexibility in diverse power supply designs.
• High Switching Frequency (100kHz): Enables compact magnetics and improved power density.
• Isolated Output: Ensures safety and compliance in offline applications.
• RoHS3 Compliant & REACH Unaffected: Meets stringent environmental regulations.
• 80% Duty Cycle: Maximizes efficiency in high-load conditions.

NCP1244AD100R2G Applications

This IC is ideal for low-to-medium power offline power supplies, including:

• AC/DC adapters for consumer electronics.
• Auxiliary power supplies in industrial systems.
• LED drivers requiring stable isolated outputs.
• Household appliances with stringent safety requirements.
  Its fault protection suite makes it particularly suitable for mission-critical applications where reliability is paramount.

Conclusion of NCP1244AD100R2G

The NCP1244AD100R2G offers a balanced combination of performance, protection, and efficiency, making it a strong choice for flyback-based power supplies. While obsolete, its wide input range, high switching frequency, and robust fault protection ensure it remains viable for legacy designs or specific applications demanding these features. Engineers should evaluate alternative onsemi solutions for new designs while considering this IC for maintenance or niche use cases.