MP4473 Datasheet | Monolithic Power Systems

DESCRIPTION The MP4473 is a fully integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a pact solution to achieve a 3.5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It provides fast, transient response and good stability for wide input-supply and load range. The MP4473 operates at high efficiency over a wide-outputcurrent load range. MP4473 has full protection features including, short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown (TSD). The MP4473 requires minimal, readily available, standard, external ponents, and is available in a pact 3mmx4mm, 20-pin, QFN package. FEATURES - Wide 4.5V-to-36V Operating Input Range - Guaranteed 3.5A, Continuous Output Current - Internal 40mΩ High-Side, 20mΩ Low-Side Power MOSFETs - Proprietary Switching-Loss-Reduction Technology - 1% Reference Voltage - Programmable Soft-Start Time - Low Drop-Out Mode - 200k Hz-to-1MHz Switching Frequency - SCP, OCP, UVP, and Thermal Shutdown - Output Adjustable from 0.8V to 0.9×VIN - Available in a 3mmx4mm, 20-pin, QFN Package APPLICATIONS - Notebook Systems and I/O Power - Automotive Systems - Networking Systems - Industrial Supplies - Optical munications Systems - Distributed Power and POL Systems All MPS parts are lead-free and adhere to the Ro HS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION R5 499k EN R3 63.4k 8,19,21,22,23 IN C1 2 FREQ 20...