NCP2991FCT2G

Overview

The NCP2991FCT2G is a high-efficiency, synchronous step-down DC-DC converter from onsemi. It integrates two N-channel power MOSFETs and operates with an input voltage range of 3.8 V to 24 V. The device delivers up to 3 A of output current and supports adjustable output voltages. It features a fixed switching frequency of 500 kHz and includes comprehensive protection mechanisms such as overcurrent protection, thermal shutdown, and soft-start functionality.

Feature Summary

• Integrates dual N-channel power MOSFETs for high efficiency in a compact package
• Supports wide input voltage range suitable for various industrial applications
• Includes built-in overcurrent protection and thermal shutdown for system reliability

Applications

• Industrial point-of-load regulation
• Battery-powered equipment power management
• General-purpose DC-DC conversion in embedded systems

Procurement Notes

Verify the specific suffix 'FCT2G' against the manufacturer's official datasheet to confirm pinout compatibility and RoHS status. Ensure the ordering part number matches the exact tape-and-reel quantity specified in the latest procurement documents. Cross-reference the date code and lot traceability requirements with your supply chain standards before finalizing orders.

Selection Notes

Select this component when a compact solution is required for converting higher bus voltages down to lower logic or sensor rails. The integrated MOSFET design reduces external component count compared to non-integrated controllers. Consider the 500 kHz switching frequency for balancing size and efficiency, and verify that the 3 A output capability meets the peak load demands of the target application circuit.

Part Context

This device belongs to the NCP299x family of synchronous buck converters. It is designed by onsemi for applications requiring high efficiency and small footprint. The family typically shares similar control architectures but may vary in current ratings or packaging options. This specific model targets mid-range current applications within the broader portfolio of power management solutions.

Replacement Considerations

Check for direct replacements like the NCP2990 or NCP2992 if current requirements differ. Verify pin-to-pin compatibility before substitution. Ensure that any alternative device maintains the same input voltage range and switching frequency to avoid redesigning the passive components.