MP4470/4470A
High-Efficiency, Fast-Transient, 5A, 36V
Synchronous, Step-Down Converter
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
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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×V
IN
Available in a 3×4mm 20-pin QFN Package
Notebook Systems and I/O Power
Automotive Systems
Networking Systems
Industrial Supplies
Optical Communications Systems
Distributed Power and POL Systems
APPLICATIONS
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
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
OUTPUT CURRENT (A)
10
MP4470/4470A Rev. 1.1
www.MonolithicPower.com
8/26/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
