NCP391FCALT2G

Overview

The NCP391FCALT2G is a positive overvoltage protection controller manufactured by onsemi. It integrates an internal low RDS(on) NMOS FET to protect sensitive electronics from damaging voltage spikes. The device operates within a supply voltage range of 1.2V to 28V and functions across a temperature range of -40°C to +85°C. It utilizes a 6-UFBGA or WLCSP package for compact surface-mount installation.

Feature Summary

• Integrates an internal low resistance NMOS switch for efficient power path control
• Provides robust protection against potentially damaging positive voltage transients
• Designed for compact applications requiring minimal external component count

Applications

• Protection of sensitive electronic circuits from voltage spikes
• Overvoltage protection in portable consumer devices
• Power management systems requiring integrated switching capability

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary by distributor. Confirm that the component meets the required operating temperature range for your specific application environment. Ensure compatibility with your PCB footprint design for the 6-UFBGA/WLCSP package type before finalizing procurement plans.

Selection Notes

Select this component when an integrated solution for positive overvoltage protection is required without the need for external discrete switches. Consider the internal NMOS characteristics and input voltage range limits relative to your system's maximum operating conditions. Evaluate the thermal performance and package size constraints to ensure suitability for the target enclosure design.

Part Context

This part belongs to onsemi's portfolio of power management integrated circuits (PMIC). It falls under the category of power supply support circuits designed for fixed-channel operation. The device serves as a specialized protection controller within the broader ecosystem of semiconductor solutions for industrial and consumer electronics.

Replacement Considerations

Consult official onsemi documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical specifications before considering alternative components from other manufacturers.