NCP1618FDR2G

Overview

The NCP1618FDR2G is a high-voltage multi-mode power factor correction controller from onsemi, designed for offline applications. It operates with a switching frequency of 130 kHz and supports a supply voltage range from 9.6 V to 35 V. The device features a startup supply current of 4 mA, a maximum source current of 500 mA, and a maximum sink current of 800 mA. It is housed in a 10-pin SOIC package and functions within an operating temperature range of -40 °C to 125 °C.

Feature Summary

• Multi-mode operation enabling smooth transition between critical conduction mode (CRM) and continuous conduction mode (CCM) based on switching cycle duration.
• Integrated EMI filtering capacitor discharge circuit for X2 capacitors.
• Comprehensive protection suite including overcurrent protection (OCP), overvoltage protection (OVP), brown-out (BO), undervoltage lockout (BUV), and surge detection.
• Frequency foldback and soft skip modes to minimize losses during very light load conditions.

Applications

• Offline power supplies requiring power factor correction
• Consumer electronics AC-DC adapters
• Industrial power conversion systems

Procurement Notes

Verify the specific suffix 'F' against the manufacturer's official datasheet to confirm exact electrical tolerances or binning differences compared to other variants in the NCP1618 series. Ensure the SOIC-9/10 pin configuration matches the target PCB footprint. Confirm RoHS compliance status through the latest component certification documents provided by onsemi before finalizing procurement.

Selection Notes

Select this component for designs requiring adaptive efficiency optimization across varying line and load conditions. The integrated CRM-to-CCM transition reduces external component count compared to discrete solutions. Consider the 130 kHz fixed frequency for EMI filter design and verify that the 35 V maximum supply voltage accommodates the system's transient requirements.

Part Context

The NCP1618FDR2G belongs to the NCP1618 family of high-voltage PFC controllers. This series is engineered to replace traditional single-mode PFC designs by dynamically adjusting operation modes. The F variant shares the core architecture with other suffixes but may differ in specific manufacturing lot characteristics or minor parameter bins as defined by onsemi.

Replacement Considerations

Direct substitutes within the same family include NCP1618ADR2G, NCP1618BDR2G, NCP1618CDR2G, NCP1618DDR2G, NCP1618KDR2G, and NCP1618JDR2G. Verify functional equivalence regarding the specific 'F' suffix parameters before substitution.