NCP1608BDR2G

Overview

The NCP1608BDR2G is a critical conduction mode (CrM) power factor correction controller from onsemi, designed for AC-DC pre-converters up to 350W. It operates with a switching frequency of 70 kHz and supports a supply voltage range of 10.2 V to 20 V. The device features an ultra-low startup current consumption of 35 µA and dissipates up to 450 mW. It is housed in an SOIC-8 surface-mount package and functions within a temperature range of -40 °C to +125 °C.

Feature Summary

• Implements constant on-time voltage-mode control in critical conduction mode without requiring input voltage sensing.
• Integrates a high-drive capability gate driver capable of sourcing 500 mA and sinking 800 mA for fast MOSFET switching.
• Includes comprehensive protection mechanisms such as overvoltage, undervoltage, open-loop feedback, and overcurrent protection.

Applications

• AC-DC adapters for consumer electronics
• Electronic ballasts for lighting systems
• Power supplies for industrial equipment

Procurement Notes

Verify the specific ordering suffix 'D' indicates tape-and-reel packaging and 'R2G' confirms RoHS compliance when placing orders. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the selected distributor sources genuine onsemi components to avoid counterfeit risks associated with active power management ICs.

Selection Notes

Select this component for designs prioritizing high power factor without complex input sensing networks. It is suitable for applications requiring robust noise immunity at higher power levels above 150W. Consider the integrated safety features if minimizing external protection circuitry is a design goal. Evaluate the thermal dissipation capabilities relative to the 450 mW power rating in the chosen enclosure.

Part Context

This part belongs to the NCP1608 series of CrM PFC controllers. It serves as a cost-effective solution for medium-power offline converters. The series is characterized by its ability to maintain near unity power factor across wide input voltage ranges while reducing component count through high integration.

Replacement Considerations

Direct substitutes include other onsemi CrM controllers such as the NCP1606 or NCP1607 series, provided they meet the specific power and frequency requirements of the target application.