Monolithic Power Systems

MP28257DD-LF-P

MP28257DD-LF-P Description

The MP28257DD-LF-P is a high-efficiency, synchronous buck regulator from Monolithic Power Systems (MPS), designed for applications requiring adjustable output voltage and high current delivery. This 4A output regulator operates over a 4.2V to 20V input range, making it suitable for a variety of power conversion tasks. With an adjustable output range of 0.815V to 13V, it offers flexibility for diverse system requirements. The device features a buck topology with synchronous rectification, enhancing efficiency and reducing power dissipation. Packaged in a 12-pin QFN and available in Tape & Reel (TR), it is optimized for surface-mount assembly in space-constrained designs.

MP28257DD-LF-P Features

• Wide Input Range (4.2V–20V): Supports multiple power sources, including 5V, 12V, and industrial rails.
• High Efficiency: Synchronous rectification minimizes conduction losses, improving thermal performance.
• Adjustable Output (0.815V–13V): Precision voltage setting for sensitive loads like FPGAs, ASICs, and processors.
• 4A Continuous Output Current: Robust power delivery for demanding applications.
• Compact 12QFN Package: Ideal for high-density PCB layouts.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• Not for New Designs: Suitable for existing systems but not recommended for new developments.

MP28257DD-LF-P Applications

The MP28257DD-LF-P excels in industrial, telecom, and embedded systems where stable, efficient power conversion is critical. Key applications include:

• Point-of-Load (POL) Regulation: Powering CPUs, GPUs, and memory in computing systems.
• Automotive Electronics: Infotainment and ADAS modules requiring high reliability.
• Portable Devices: Battery-powered equipment needing wide input voltage tolerance.
• Networking Equipment: Routers, switches, and servers benefiting from its high-current capability.

Conclusion of MP28257DD-LF-P

The MP28257DD-LF-P is a versatile, high-performance buck regulator offering efficiency, flexibility, and compact design. While it is not recommended for new designs, it remains a reliable choice for legacy systems requiring adjustable voltage, high current, and robust thermal performance. Its synchronous rectification and wide input range make it ideal for industrial and embedded applications where power integrity is paramount. Engineers should evaluate alternative MPS solutions for future-proof designs.