Monolithic Power Systems, Inc. Voltage Regulators - DC DC Switching Regulators MPQ2178AGQHE-AEC1-P

The MPQ2178AGQHE-AEC1-P is a monolithic step-down switching regulator designed for automotive applications, capable of delivering up to 2A of continuous output current. It operates within a wide input voltage range of 2.5V to 5.5V and can regulate output voltage as low as 0.6V. The device features a constant-on-time control scheme that enhances transient response and simplifies loop stabilization. Key specifications include a 2.4MHz switching frequency, 1% feedback accuracy, and a junction temperature range from -40¬8C to +150¬8C. The regulator incorporates several fault protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown. It is packaged in a compact QFN-8 (1.5mm x 2mm) format, requiring minimal external components, which aids in optimizing board space and bill of materials (BOM) costs. The MPQ2178AGQHE-AEC1-P is AEC-Q100 Grade 1 qualified, making it suitable for use in automotive infotainment systems, camera modules, and other battery-powered devices. Its low quiescent current of 21OºA in sleep mode and advanced asynchronous mode (AAM) contribute to improved battery life and efficiency under light load conditions.