MP9943AGQ-Z

Voltage Regulators - DC DC Switching Regulators Overview

The MP9943AGQ-Z is a high-efficiency synchronous step-down DC/DC converter manufactured by Monolithic Power Systems. It integrates low-side and high-side power MOSFETs within an 8-VDFN package to deliver up to 3A of output current. The device supports a wide input voltage range from 4V to 36V and provides an adjustable output voltage between 0.8V and 28.5V. Operating at a fixed switching frequency of 410kHz, it features external clock synchronization capabilities ranging from 200kHz to 2.2MHz. The component ensures robust performance with internal protections including overcurrent protection and thermal shutdown, suitable for industrial and automotive environments.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates low on-resistance high-side and low-side power MOSFETs for efficient synchronous rectification
• Supports external clock synchronization across a broad frequency range for system noise management
• Includes comprehensive protection mechanisms such as automatic recovery overcurrent protection and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment power distribution systems
• Automotive electronics requiring cold crank support
• Point-of-load regulation for digital signal processors

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation when ordering, as variations exist within the MP9943 family. Confirm that the AGQ-Z variant matches the required environmental compliance and packaging specifications for your assembly process. Cross-reference the manufacturer datasheet to ensure compatibility with your system's thermal and electrical requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for converting higher bus voltages down to lower logic levels. The integrated power stage reduces the need for external Schottky diodes, simplifying the bill of materials. Ensure the application benefits from the wide input range and the ability to synchronize the switching frequency to avoid interference with other system components.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MP9943 series of synchronous buck converters designed for space-constrained applications. It shares architectural similarities with the MP9943GQ-Z but may differ in specific manufacturing lot or minor parameter tolerances defined by the manufacturer. The series is characterized by its high integration level and suitability for demanding operating conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MP9943GQ-Z is listed as a parameter-equivalent alternative within the same product family.