Monolithic Power Systems, Inc. Voltage Regulators - DC DC Switching Regulators MP4571GQB-Z

The MP4571GQB-Z is a high-efficiency, fully integrated synchronous buck converter designed for a wide input voltage range of 4.5V to 60V, making it suitable for various automotive and industrial applications. It can deliver up to 1A of continuous output current and features internal power MOSFETs with low on-resistance (250m,Ѷ for high-side and 45m,Ѷ for low-side), which enhances efficiency by eliminating the need for an external Schottky diode. This regulator supports a configurable switching frequency of up to 2.2MHz and offers advanced asynchronous modulation (AAM) for improved efficiency at light loads. It includes essential features such as a 40OºA quiescent current, a low shutdown mode current of 2OºA, built-in soft start, enable control, and a power good indicator. Protection mechanisms include over-current protection, short-circuit protection with hiccup mode, input under-voltage lockout, and thermal shutdown. The MP4571GQB-Z is packaged in a compact QFN-12 (2.5mm x 3mm) format, which is advantageous for space-constrained designs. Its specifications make it a viable option for engineers looking for a reliable and efficient voltage regulation solution in demanding environments.