NCP1611ADR2G

Overview

The NCP1611ADR2G is an enhanced, high-efficiency power factor controller manufactured by onsemi. It operates in Critical Conduction Mode (CRM) with Current Controlled Frequency Foldback (CCFF) technology to optimize performance across varying load conditions. The device features a boost topology and supports an operating voltage range of 9V to 35V DC. It is housed in an 8-SOIC package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates soft-start functionality for controlled power-up sequences
• Includes comprehensive protection mechanisms such as overvoltage, undervoltage, and over-temperature safeguards
• Utilizes Critical Conduction Mode with frequency foldback for improved efficiency at light loads

Applications

• Power Factor Correction circuits in consumer electronics
• Adapter and charger designs requiring high efficiency
• General-purpose AC/DC power supplies

Procurement Notes

Verify the specific suffix 'ADR2G' against the manufacturer's current datasheet to confirm pinout compatibility and environmental compliance status. Ensure that the 8-SOIC package dimensions match your PCB footprint requirements. Cross-reference the operating voltage limits with your system's input specifications to prevent damage during transient events.

Selection Notes

Select this component when designing systems that require critical conduction mode PFC for balanced efficiency and electromagnetic interference performance. It is suitable for applications where moderate output currents are needed alongside robust protection features. Consider the thermal characteristics of the SOIC package relative to your enclosure design constraints.

Part Context

This part belongs to the NCP1611A family of enhanced power factor controllers from onsemi. These devices are designed to replace older generation PFC solutions by offering higher efficiency through advanced control algorithms. The family targets cost-sensitive yet performance-driven applications in the general electronics market.

Replacement Considerations

Check for direct substitutes within the NCP1611 series or compatible CRM controllers from other manufacturers. Verify that alternative parts support the same boost topology and voltage range. Ensure pin-to-pin compatibility if physical replacement is required without redesigning the PCB.