Monolithic Power Systems MP4470A

Description

The MP4470/4470A is a fully-integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compactsolution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input-supply and load range.The MP4470/4470A operates at high efficiency over a wide output current load range.MP4470 has full protection features include SCP, OCP, OVP latch, UVP, and thermal shutdown. MP4470A has the same protection features to MP4470 except has no OVP latch function.The MP4470/4470A requires a minimal number of readily-available, standard, external components, and is available in a space-saving 3mm×4mm, 20-pin, QFN package.

Features

• Wide 4.5V-to-36V Operating Input Range
• Guaranteed 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
• 200kHz-to-1MHz Switching Frequency
• SCP, OCP, OVP Latch(MP4470 only), UVP, and Thermal Shutdown
• Output Adjustable from 0.8V to 0.9×VIN
• Available in a 3×4mm 20-pin QFN Package

Typical applications

• Networking Systems
• Distributed Power and POL Systems
• Industrial Supplies
• Notebook Systems and I/O Power
• Optical Communications Systems
• Automotive Systems

More information

• Datasheet
• IC product information