NCP1655ADR2G

Overview

The NCP1655ADR2G is a multimode power factor correction controller designed for AC-DC power conversion. It operates with a supply voltage range of 9.5 V to 35 V and features a switching frequency of 130 kHz. The device draws an operating current of 2.2 mA and supports a maximum source current of 500 mA. It integrates brown-out protection and zero power detection capabilities. The component is housed in a 9-pin NSOIC package.

Feature Summary

• Supports multi-mode operation transitioning between critical conduction mode (CrM) and continuous conduction mode (CCM)
• Integrates brown-out protection for enhanced system reliability
• Includes zero power detection functionality for improved efficiency at light loads

Applications

• AC-DC power factor correction stages
• High-efficiency power supply designs
• Consumer electronics power adapters

Procurement Notes

Verify the specific ordering suffix and package variant against official onsemi documentation to ensure compatibility with design requirements. Confirm that the selected component meets all necessary regulatory standards for the intended application environment. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and availability status prior to procurement.

Selection Notes

Select this controller for applications requiring efficient power factor correction across varying load conditions. The multimode capability allows natural transition between CrM and CCM, optimizing performance. Ensure the input voltage range aligns with the 9.5 V to 35 V specification. Consider the 130 kHz switching frequency when designing magnetic components and filtering circuits for the target power supply architecture.

Part Context

This component belongs to the NCP1655 series of power factor correction controllers from onsemi. It is engineered to provide high efficiency and low standby power consumption. The device is suitable for single-stage PFC applications where compact size and high performance are required. It serves as a key element in modern power management systems aiming to meet energy efficiency regulations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative PFC controllers from other manufacturers or different series within the same product family.