MP5408MGU-Z

Voltage Regulators - DC DC Switching Regulators Overview

The MP5408MGU-Z is a monolithic step-down switching regulator manufactured by Monolithic Power Systems. It integrates a buck converter with dual smart USB charging ports, supporting an input voltage range of 6V to 36V and delivering up to 6A output current. The device offers selectable fixed output voltages of 5.1V, 5.17V, or 5.3V. Its switching frequency is programmable from 235kHz to 2.2MHz. Key electrical specifications include a maximum load regulation of 1%, a typical quiescent current of 1mA, and an operating temperature range spanning -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates dual intelligent USB charging port identification circuits supporting BC1.2 DCP, Divider, 1.2V/1.2V, and USB Type-C 5V@3A DFP modes without external intervention.
• Features low on-resistance internal power MOSFETs for the main buck path and individual USB switches to minimize conduction losses.
• Includes comprehensive protection mechanisms such as hiccup current limiting for both the buck converter and USB outputs, overvoltage protection, and thermal shutdown.
• Provides line drop compensation to maintain accurate output voltage under varying load conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring high-current USB charging capabilities
• Consumer electronics utilizing USB Type-C interfaces
• Battery-powered equipment needing efficient DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels due to potential counterfeit risks. Confirm package integrity upon receipt, as the QFN-26 form factor requires careful handling during inspection. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match your design requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring integrated USB charging logic alongside high-current power delivery. The wide input voltage range accommodates various battery configurations. Consider the programmable switching frequency to optimize efficiency versus EMI performance based on specific application constraints. Verify that the selected output voltage option aligns with downstream load requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MP5408 series of power management ICs designed for mobile applications. It consolidates power stage components and charging controllers into a single compact QFN-26 package measuring 5mm x 5mm. This integration reduces the overall solution size compared to discrete implementations, making it suitable for space-constrained portable designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MP5408M is listed as an alternative for new designs, though MP5408MGU-Z remains in production for existing customers. Verify pin compatibility and electrical parameters before substitution. No other direct substitutes are confirmed in public documentation.