NCP45541IMNTWG-H

Overview

The NCP45541IMNTWG-H is a high-side power switch from onsemi's ecoSWITCH series, featuring an integrated N-channel MOSFET with charge pump. It supports load voltages from 0.5V to 13.5V and operates with VCC supplies between 3V and 5.5V. The device delivers a maximum output current of 14A with a typical on-resistance of 4.8 mΩ. Packaged in a 12-DFN (3x3) surface-mount format, it includes features such as controlled slew rate for soft-start, power-good monitoring, and thermal protection.

Feature Summary

• Integrates an N-channel MOSFET with a charge pump for efficient high-side switching
• Provides controlled slew rate capability to limit inrush currents during startup
• Includes a power-good open-drain output signal for system status monitoring
• Features internal load discharge circuitry for rapid voltage decay upon shutdown

Applications

• Hot-swap applications requiring controlled power sequencing
• Power domain switching in portable electronic devices
• Load distribution in industrial equipment with space constraints
• Battery-powered systems requiring low standby current consumption

Procurement Notes

Verify the specific suffix H against the manufacturer datasheet to confirm material compliance and package variations. Ensure the 12-DFN footprint matches the PCB layout requirements. Confirm that the operating temperature range meets the application environment specifications. Check RoHS3 compliance status if required by regional regulations. Validate supply chain authenticity through authorized distributors.

Selection Notes

Select this component when a compact high-side switch with integrated protection is needed. The 14A current rating suits moderate load applications. The wide input voltage range allows flexibility across different power rails. Consider the 4.8 mΩ on-resistance for efficiency calculations. The controlled slew rate feature is critical for managing capacitive loads without triggering overcurrent protection.

Part Context

This part belongs to the NCP4554x family of load switches designed for efficient power management. It shares functional similarities with other ecoSWITCH devices but offers specific current and resistance characteristics. The 12-DFN package provides a small form factor suitable for dense PCB layouts. It complements onsemi's broader portfolio of PMIC solutions for consumer and industrial markets.

Replacement Considerations

Direct substitutes include other NCP45541 variants with different suffixes or packages. Cross-reference with NCP45540 for similar functionality with potentially different pinout or protection features. Verify electrical parameters match before substitution. Ensure thermal performance remains adequate in the new configuration.