MP62181DD-LF-Z

Overview

The MP62181DD-LF-Z is a single-channel power distribution switch IC from Monolithic Power Systems, designed for 3.3V and 5V systems. It features an active-high enable input and supports a continuous output current of 2A with a hard current limit set at 2.8A. The device operates within a supply voltage range of 2.7V to 5.5V and exhibits a maximum on-resistance of 120mΩ. Key timing parameters include a maximum turn-on time of 10ms and a maximum off-time of 3ms. It is rated for operation between -40°C and +85°C and is housed in a DD package.

Feature Summary

• Integrates a single high-side power switch with active-high control logic for simplified interface design.
• Provides robust overcurrent protection through a fixed 2.8A current limit threshold to safeguard downstream loads.
• Ensures low power loss during conduction via a minimized 120mΩ maximum on-resistance specification.

Applications

• Power distribution switching in 3.3V and 5V embedded system architectures
• Load management and protection for peripheral devices in industrial equipment
• Current-limited channel activation in consumer electronics hardware

Procurement Notes

Verify the specific suffix LF-Z against the manufacturer's official documentation to confirm lead-free compliance and packaging details. Confirm the NRND status with the supplier prior to finalizing procurement plans, as this designation indicates the component is not recommended for new designs. Ensure that the DD package footprint matches the target PCB layout requirements before placing orders.

Selection Notes

Select this component when a single-channel solution with a 2A continuous rating and 2.8A limit is required for 3.3V or 5V rails. The active-high enable feature simplifies control logic compared to active-low alternatives. Consider the 120mΩ on-resistance for thermal management calculations. Verify compatibility with the -40°C to +85°C operating temperature range for the intended application environment.

Part Context

This part belongs to the MPS power switch IC family focused on power distribution. It serves as a protective switching element within PMIC subsystems. The DD package variant offers surface-mount integration suitable for compact board designs. It functions alongside other MPS components to manage power routing and load isolation in multi-rail systems.

Replacement Considerations

The MP62180DS-LF-Z is a documented alternative within the same product line. Note that the MP62180DS-LF-Z utilizes an active-low enable configuration and a slightly higher on-resistance of 130mΩ. These differences require evaluation of control logic polarity and thermal performance before substitution.