NCP451FCT2G

Overview

The NCP451FCT2G is a single-channel, high-side power distribution switch manufactured by onsemi. It features an N-channel MOSFET capable of handling up to 3A output current with a typical on-resistance of 12 milliohms. The device operates within a load voltage range of 0.75V to 5.5V and requires no supply voltage (Vcc/Vdd). Packaged in a compact 6-WLCSP (1.4x0.9mm) surface-mount format, it supports non-inverting open/switch interfaces. The component is rated for operation between -40°C and +85°C ambient temperature.

Feature Summary

• Integrated controlled slew rate functionality to manage inrush current during turn-on events
• Built-in load release capability for efficient discharge of capacitive loads upon shutdown
• Ultra-low on-resistance design minimizes conduction losses and heat generation
• Compact 6-WLCSP package enables space-constrained board layouts

Applications

• Portable electronic devices requiring efficient power management
• Peripheral circuit protection in consumer electronics
• Battery-powered systems needing low quiescent current solutions
• General-purpose load switching in mobile communication equipment

Procurement Notes

Verify the specific suffix 'FCT2G' against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Ensure the 6-WLCSP footprint matches your PCB design constraints. Confirm that the 3A continuous current rating aligns with your system's peak load requirements without exceeding thermal limits.

Selection Notes

Select this component when a single-channel, high-side switch with integrated inrush control is required. It is suitable for applications where board space is limited due to its small WLCSP package. Consider the 12mOhm on-resistance for efficiency calculations and ensure the 0.75V minimum operating voltage meets your system's lowest supply rail conditions.

Part Context

This part belongs to the NCP451 series of power switches from onsemi. The series focuses on providing robust load protection and efficient power distribution in portable applications. The NCP451FCT2G variant specifically utilizes the FCT2G packaging code, indicating the 6-WLCSP form factor and tape-and-reel delivery method for automated assembly processes.

Replacement Considerations

Check for NCP451AFCT2G as a potential alternative within the same family, noting any differences in manufacturing lot or minor parameter variations. Verify functional equivalence before substitution, particularly regarding the controlled slew rate and load release features.