High-Efficiency, 1.5A, 28V Input MIC2250-1YD5-TR Step-Down Regulator with Integrated Switches

In the realm of modern power management, the demand for compact, efficient, and robust voltage regulation is paramount. The MIC2250-1YD5-TR stands out as a premier solution, a high-performance, step-down (buck) DC-DC regulator engineered to meet these rigorous demands. This integrated circuit is specifically designed to deliver a stable output from input voltages as high as 28V, making it exceptionally versatile for a wide array of applications, from industrial equipment and automotive systems to networking hardware and portable devices.

A key highlight of the MIC2250-1YD5-TR is its impressive power conversion efficiency. By integrating both the control circuitry and the power switches—a high-side and a low-side MOSFET—into a single package, it minimizes external component count and power losses associated with interconnections. This monolithic design, coupled with its ability to operate at a 1.4MHz fixed switching frequency, allows for the use of smaller inductors and capacitors. The result is a significant reduction in the overall solution footprint without compromising performance. The high switching frequency also enables excellent transient response to rapid changes in load current.

The regulator is capable of delivering a continuous output current of up to 1.5A, providing ample power for a multitude of point-of-load (POL) applications. Its current-mode control architecture ensures stable operation across a wide range of conditions, offering superior line and load regulation. Furthermore, the device incorporates a comprehensive suite of protection features, including internal soft-start to limit inrush current, cycle-by-cycle current limiting, and thermal shutdown. These safeguards enhance system reliability by protecting both the IC and the load under fault conditions.

Housed in a space-saving, thermally efficient 5-pin D2PAK package, the MIC2250-1YD5-TR is designed for effective power dissipation in demanding environments. Its high 28V maximum input rating provides ample headroom for handling voltage spikes commonly encountered in 24V industrial systems or 12V automotive environments.

ICGOOODFIND: The MIC2250-1YD5-TR is a superior integrated step-down regulator that masterfully combines high efficiency, a high input voltage range, and a compact form factor. Its built-in protection mechanisms and high switching frequency make it an ideal, reliable choice for power-dense electronic designs requiring robust performance.

Keywords: High-Efficiency, Step-Down Regulator, 28V Input, 1.5A Output, Integrated Switches.