MPQ4470 Datasheet, PDF (1/20 Pages) Monolithic Power Systems – High-Efficiency, Fast-Transient, 5A, 36V Synchronous, Step-Down Converter AEC-Q100 Qualified

The Future of Analog IC Technology
MPQ4470/4470A
High-Efficiency, Fast-Transient, 5A, 36V
Synchronous, Step-Down Converter
AEC-Q100 Qualified
DESCRIPTION
The MPQ4470/4470A 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 MPQ4470/4470A operates at high
efficiency over a wide output current load range.
MPQ4470 has full protection features include
SCP, OCP, OVP latch, UVP, and thermal
shutdown. MPQ4470A has the same protection
features to MPQ4470 except has no OVP latch
function.
The MPQ4470/4470A requires a minimal number
of readily-available, standard, external
components, and is available in a space-saving
3mm×4mm, 20-pin, QFN package.
TYPICAL APPLICATION
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 (MPQ4470 only),
UVP, and Thermal Shutdown
• Output Adjustable from 0.8V to 0.9×V_IN
• Available in a 3mm×4mm 20-pin QFN
Package
• Available in AEC-Q100 Grade 1
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.
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OUTPUT CURRENT (A)
MPQ4470/4470A Rev. 1.1
www.MonolithicPower.com
1
8/26/2013
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