onsemi

NCP1601BDR2G

NCP1601BDR2G Description

The NCP1601BDR2G from onsemi is a high-performance Power Factor Correction (PFC) controller designed for critical conduction (CRM) and discontinuous transition (DCM) modes, ensuring efficient power conversion with minimal harmonic distortion. Operating at a switching frequency of 58kHz, it supports an input voltage range of 9.6V to 18V, making it suitable for a variety of AC-DC power supply designs. Packaged in an 8-pin SOIC and available in Tape & Reel (TR), this IC is optimized for surface-mount applications. Although marked as obsolete, it remains a reliable choice for legacy systems requiring stable PFC performance.

NCP1601BDR2G Features

• Low Startup Current: Just 17 µA, reducing power consumption during initialization.
• Dual-Mode Operation: Supports CRM and DCM for flexible power management across varying load conditions.
• Wide Supply Range: 9.6V–18V compatibility ensures adaptability in diverse power environments.
• Compact & Robust: MSL 1 (Unlimited) moisture sensitivity allows for extended storage without degradation.
• Regulatory Compliance: EAR99 and REACH Unaffected status simplifies global deployment.

NCP1601BDR2G Applications

Ideal for offline power supplies, LED drivers, and industrial SMPS (Switched-Mode Power Supplies), the NCP1601BDR2G excels in systems requiring high power factor (>0.95) and low THD (Total Harmonic Distortion). Its CRM/DCM hybrid operation minimizes switching losses, making it particularly effective in:

• Server & Telecom PSUs: Enhances efficiency in high-load scenarios.
• Consumer Electronics: Reduces energy waste in TVs and adapters.
• Lighting Systems: Optimizes performance in high-brightness LED drivers.

Conclusion of NCP1601BDR2G

The NCP1601BDR2G stands out for its versatile PFC control, low standby power, and robust design, despite its obsolete status. Engineers leveraging this IC benefit from onsemi’s proven reliability in power management, particularly in applications demanding high efficiency and regulatory compliance. While newer alternatives exist, this model remains a pragmatic choice for legacy upgrades or cost-sensitive designs.