NX2139ACMTR

Overview

The NX2139ACMTR is a Power Management IC (PMIC) manufactured by Microsemi Corporation, housed in a 16-MLPQ (3x3) surface-mount package. It integrates two output channels: one synchronous step-down (buck) converter and one linear low-dropout (LDO) regulator. The device operates with a supply voltage range of 4.5V to 22V. This dual-topology configuration allows for efficient power conversion alongside precise voltage regulation within a compact form factor suitable for space-constrained electronic designs.

Feature Summary

• Integrates a synchronous buck converter and an LDO regulator in a single package
• Supports wide input supply voltage operation up to 22V
• Utilizes a compact 16-MLPQ surface-mount footprint

Applications

• Portable electronic devices requiring mixed power topologies
• Embedded systems needing efficient buck conversion and stable LDO output
• Industrial control modules with moderate voltage requirements

Procurement Notes

Verify the manufacturer origin carefully, as Microsemi was acquired by Microchip Technology. Confirm the specific suffix 'CMTR' matches your required tape-and-reel packaging and temperature grade. Ensure the 16-MLPQ (3x3) package dimensions align with your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a design requires both high-efficiency switching regulation and low-noise linear regulation from a single source. The wide input voltage range makes it suitable for battery-powered or variable supply applications. Consider the thermal performance of the MLPQ package relative to your expected load currents for both outputs.

Part Context

This part belongs to the PMIC category, specifically combining linear and switching regulators. Microsemi, now part of Microchip, specializes in semiconductor solutions for aerospace, defense, and communications. The NX2139 series provides integrated power management solutions designed to reduce board space and simplify power distribution networks in complex electronic systems.

Replacement Considerations

The NX2138CMTR is listed as a related switching controller variant. Verify if the NX2139A bare die or other series members offer compatible pinouts and electrical characteristics. Cross-reference specifications thoroughly to ensure functional equivalence before substitution.