MPQ6842

Overview

The MPQ6842 is a synchronous step-down DC/DC converter from onsemi, designed for high-efficiency power conversion in compact applications. It integrates two N-channel power MOSFETs and operates with an input voltage range of 3.8V to 28V. The device delivers up to 10A of continuous output current with adjustable output voltages. Key electrical parameters include a switching frequency selectable between 300kHz and 2.2MHz, ensuring compatibility with small external components. It features programmable soft-start time and precise current limit protection. The controller utilizes constant-on-time (COT) architecture with adaptive on-time control for fast transient response.

Feature Summary

• Integrated synchronous rectification with low RDS(on) MOSFETs for high efficiency
• Adaptive on-time COT control architecture for improved transient performance
• Wide input voltage range supporting various bus voltage levels
• Programmable switching frequency and soft-start capabilities

Applications

• Industrial automation controllers
• Infotainment systems
• Point-of-load regulation for FPGA or ASIC cores

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and packaging type. Ensure the ordering part number matches the required switching frequency option and package variant. Cross-reference the RoHS compliance status and lead times directly with authorized distributors before procurement.

Selection Notes

Select the MPQ6842 when a wide input voltage range and high current capability are required in a small footprint. Consider the available switching frequency options to balance efficiency against passive component size. Verify that the thermal requirements of the application can be met by the chosen package type, as power dissipation increases with higher load currents and duty cycles.

Part Context

This component belongs to the Monolithic Power Systems (MPS) portfolio, although distributed by onsemi in certain regions or through specific partnerships. It is part of a family of synchronous buck converters aimed at replacing multi-phase solutions in single-phase high-current applications. The device competes with similar high-current buck regulators offering integrated gate drivers and protection features.