MP4571GQB-Z

Voltage Regulators - DC DC Switching Regulators Overview

The MP4571GQB-Z is a high-efficiency, fully integrated synchronous buck converter manufactured by Monolithic Power Systems. It supports an input voltage range of 4.5 V to 60 V and delivers up to 1 A of output current. The device operates at a fixed switching frequency of 2.2 MHz and features a low quiescent current of 40 uA. It is housed in a QFN-12 package and includes shutdown functionality for power management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fully integrated synchronous step-down topology
• Wide input voltage tolerance up to 60 V
• Fixed high-frequency operation for compact design
• Low standby current consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems
• Automotive electronics
• Point-of-load regulation
• Battery-powered equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and halogen-free status as per manufacturer standards. Confirm the QFN-12 package dimensions match your PCB footprint requirements. Ensure the 60 V maximum input rating aligns with your system's transient voltage conditions. Check for any specific automotive qualification requirements if deploying in vehicle applications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1 A output current is sufficient for the load. The 2.2 MHz frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance of the QFN-12 package under full load conditions. Verify that the 4.5 V minimum input voltage meets the lowest expected supply rail level.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MPS synchronous buck converter family designed for high efficiency and compact size. It serves as a DC-DC step-down solution for converting higher voltages to lower logic or sensor levels. The integration reduces the external component count, simplifying the overall power supply design.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MPQ4571GQB-AEC1-Z is an automotive-grade qualified version with identical electrical specifications. MP4321GDE-Z offers similar performance but with load dump tolerance up to 42 V. MP4573GQBE-Z provides higher current capability at 2.5 A.