NCP1618JDR2G

Overview

The NCP1618JDR2G is a high-voltage multi-mode power factor controller from onsemi. It operates in SO-9 (SOIC-9) packages with 9 leads. The device supports switching frequencies of 65 kHz and 130 kHz, depending on the specific variant configuration within the series. It functions across a supply voltage range of 9.5V to 35V and withstands operating temperatures from -40°C to +125°C TJ. Designed for offline applications, it integrates critical conduction mode (CRM) and continuous conduction mode (CCM) capabilities.

Feature Summary

• Multi-mode operation automatically transitions between critical conduction mode (CRM) and continuous conduction mode (CCM) based on switch period duration to optimize efficiency across line and load ranges.
• Integrates robust protection features including overcurrent protection (OCP), overvoltage protection (OVP), brown-out detection (BO), undervoltage lockout (BUV), and surge detection.
• Includes an integrated EMI filter capacitor (X2) discharge circuit and a pfcOK signal for system status indication.

Applications

• Offline power supplies requiring power factor correction
• Consumer electronics adapters
• Industrial power systems

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the selected package matches the PCB footprint requirements. Confirm RoHS compliance status through official documentation before integration into regulated products.

Selection Notes

Select this component for designs requiring automatic mode transition to maintain high efficiency at light loads. Consider the SO-9 package size for space-constrained layouts. Evaluate the need for integrated X2 capacitor discharge if safety isolation standards require rapid voltage decay after power removal.

Part Context

This part belongs to the NCP1618 family of high-voltage PFC controllers. The family is characterized by its ability to minimize external components while providing comprehensive protection and efficiency optimization. It serves as a solution for modern offline power conversion applications demanding compact form factors.

Replacement Considerations

NCP1618BDR2G, NCP1618KDR2G, NCP1618ADR2G, NCP1618CDR2G, NCP1618FDR2G, NCP1618DDR2G.