Monolithic Power Systems, Inc. Voltage Regulators - DC DC Switching Regulators MP38872DL-LF-Z

The MP38872DL-LF-Z is a monolithic step-down switching regulator designed to deliver a continuous output current of 6A. It operates over a wide input voltage range of 4.5V to 21V and features an internal power MOSFET with a low on-resistance of 45m,Ѷ, contributing to high efficiency levels of up to 95%. The device supports a fixed switching frequency of 600kHz and can be synchronized to an external clock exceeding 1MHz. Key features include cycle-by-cycle over-current protection, thermal shutdown, and an adjustable output voltage starting from 0.8V. The regulator is packaged in a thermally enhanced 14-pin QFN (3x4 mm) format, which includes an exposed pad for improved thermal performance. It is suitable for applications such as point-of-load regulation in distributed power systems, digital set-top boxes, personal video recorders, and flat panel televisions. Engineers considering this product should note its minimal external component requirements and stable operation with low ESR ceramic capacitors, making it a practical choice for various power management applications.