NCP45541IMNTWG-L

Overview

The NCP45541IMNTWG-L is a high-side load switch IC from onsemi's ecoSWITCH series, housed in a 12-DFN (3x3 mm) package. It integrates an N-channel MOSFET with a charge pump to support input voltages from 0.5 V to 13.5 V. The device delivers a maximum output current of 14 A with a typical on-resistance of 4.8 mΩ. It operates with a supply voltage of 3 V to 5.5 V and features adjustable soft-start via an external capacitor to limit inrush current. Key specifications include a power-good signal for system monitoring and a fast discharge function for rapid load de-energization.

Feature Summary

• Integrates an N-channel MOSFET with a charge pump for low on-resistance performance
• Features adjustable soft-start control to limit capacitive charging inrush currents
• Provides a power-good open-drain output signal for system status monitoring
• Includes internal bleed resistor and switch for rapid load discharge upon shutdown

Applications

• Power distribution in portable electronic devices
• Thermal hot-swap applications requiring controlled turn-on
• Battery-powered systems requiring ultra-low standby current
• Load switching for peripheral modules in industrial equipment

Procurement Notes

Verify the specific suffix 'L' against the manufacturer's official documentation to confirm if it denotes a lead-free variant or a specific tape-and-reel configuration distinct from the standard 'H' suffix. Ensure the ordering part number matches the exact package and marking requirements for your assembly process. Cross-reference the datasheet revision date to confirm the availability of the latest electrical characteristics and mechanical dimensions before finalizing procurement.

Selection Notes

Select this component when a compact solution is required for high-current switching with precise inrush control. The integrated charge pump allows operation with low input voltages while maintaining low Rds(on). Consider the external components needed for the slew rate and discharge functions during design. Verify that the 12-DFN thermal pad connection meets the PCB layout requirements for adequate heat dissipation under maximum load conditions.

Part Context

This part belongs to onsemi's ecoSWITCH family, designed for efficient power management in space-constrained applications. The NCP45541 series provides a complete load switch solution by combining the driver, protection logic, and power FET into a single small footprint. It serves as an alternative to discrete MOSFET solutions, offering simplified design and improved reliability through integrated monitoring features like the power-good signal.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.