MP5423GN-Z

Overview

The MP5423GN-Z is a multi-channel power management IC from Monolithic Power Systems, designed for high-voltage applications. It integrates one synchronous buck converter and two low-dropout regulators (LDOs). The device operates with an input voltage range of 25 V to 100 V. The buck converter provides up to 300 mA output current, while the LDOs deliver 650 mA and 100 mA respectively. It utilizes a fixed 200 kHz switching frequency and is housed in an 8-SOIC package with an exposed pad.

Feature Summary

• Integrates a 300 mA synchronous buck converter alongside two linear regulators within a single chip
• Supports wide input voltage ranges suitable for high-voltage system architectures
• Features a compact surface-mount package design to minimize board space requirements

Applications

• Electric-bike power management systems
• Industrial control power distribution
• High-voltage sensor node powering

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to ensure correct pinout and thermal characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Cross-reference the ordering number with official distributor catalogs to validate availability and lead times associated with the specific packaging configuration.

Selection Notes

Select this component when a single solution is required to manage multiple voltage rails from a high-voltage source. The integrated topology reduces external component count compared to discrete designs. Ensure the total load current across all three outputs does not exceed individual channel limits while maintaining adequate thermal dissipation through the exposed pad.

Part Context

This part belongs to the MP series of specialized power management integrated circuits. It addresses the need for consolidated power distribution in environments where space is constrained and input voltages significantly exceed standard logic levels. The integration of both switching and linear regulation allows for efficient primary conversion followed by precise secondary regulation.

Replacement Considerations

Direct substitutes include the MP5423GN-P variant, which shares identical electrical specifications but differs in packaging format. Verify pin compatibility and thermal performance when transitioning between reel and cut-tape configurations or different package styles within the same functional family.