MIC2251YML-TR: A 2A, 24V, High-Efficiency Synchronous Buck Regulator in a 1.6x1.6mm µMLF Package
The relentless drive towards smaller, more powerful, and energy-efficient electronics demands power management solutions that are equally advanced. The MIC2251YML-TR from Microchip Technology stands out as a premier solution, expertly engineered to meet these challenges. This device is a high-efficiency, 2A synchronous step-down (buck) regulator capable of operating from an input voltage as high as 24V, all housed in an incredibly compact 1.6x1.6mm µMLF package.
A key strength of the MIC2251YML-TR is its ability to efficiently power a wide range of applications from diverse sources, including industrial 24V bus systems, automotive power supplies, and multi-cell Li-ion batteries. Its wide 4.4V to 24V input voltage range provides designers with exceptional flexibility. The regulator integrates both high-side and low-side MOSFETs, which eliminates the need for external switches, simplifies design, reduces the total component count, and saves valuable board space. This synchronous rectification architecture is fundamental to achieving its high efficiency, which peaks at over 95%, minimizing power loss and heat generation.
Despite its minuscule size, the MIC2251YML-TR is packed with robust features. It offers a fixed 1.0MHz switching frequency, allowing for the use of small external inductors and capacitors, further minimizing the overall solution footprint. The high switching frequency also enables fast transient response to sudden changes in load current. Additional built-in protection features, such as cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout (UVLO), ensure reliable and safe operation under fault conditions, making it suitable for harsh electrical environments.
The ultra-small µMLF (Micro Lead Frame) package is a critical aspect of this IC's value proposition. This package technology allows for a dramatically reduced PCB footprint, making it an ideal choice for space-constrained applications like portable medical devices, wearable technology, RF modules, and distributed power systems within larger server and telecom hardware. Its small size does not compromise thermal performance, as the package is designed to effectively transfer heat to the PCB.
In summary, the MIC2251YML-TR represents a significant achievement in power management integration and performance. It delivers robust power conversion capabilities in a form factor that pushes the boundaries of miniaturization.
ICGOODFIND: For engineers designing next-generation portable, battery-operated, and space-sensitive industrial equipment, the MIC2251YML-TR is a top-tier component. It masterfully combines high efficiency, a wide input voltage range, a 2A output current, and comprehensive protection features within one of the smallest available packages on the market. It is an optimal choice for optimizing power delivery and saving critical real estate in modern electronic designs.
Keywords: High-Efficiency, Synchronous Buck Regulator, 2A Output, 24V Input, µMLF Package
