MP4470/4470A

High-Efficiency, Fast-Transient, 5A, 36V

Synchronous, Step-Down Converter

MP4470/4470A Rev. 1.1

www.MonolithicPower.com

1

8/26/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP4470/4470A is a fully-integrated, high-

frequency, synchronous, rectified, step-down,

switch-mode converter. It offers a very compact

solution 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

• Available in a 3×4mm 20-pin QFN Package

APPLICATIONS

•

Notebook Systems and I/O Power

•

Automotive Systems

•

Networking Systems

•

Industrial Supplies

•

Optical Communications Systems

•

Distributed Power and POL Systems

All MPS parts are lead-free and adhere to the RoHS 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

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0.01

0.1

1

10

OUTPUT CURRENT (A)