MPQ4561
1.5A, 2MHz, 55V
Step-Down Converter
Available in AEC-Q100
DESCRIPTION
The MPQ4561 is a high-frequency, step-down,
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides up to a 1.5A output with current mode
control for fast loop response and easy
compensation.
The wide 3.8V-to-55V input range accommodates
a variety of step-down applications, including
those in automotive input environment. A 12µA
shutdown mode supply current makes it suitable
for battery-powered applications.
A scaled-down switching frequency in light-load
conditions provides high power-conversion
efficiency over a wide load range while reducing
switching and gate driver losses.
The frequency foldback prevents inductor current
runaway during startup and thermal shutdown
provides reliable, fault tolerant operation.
By switching at 2MHz, the MPQ4561 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MPQ4561 is available in a 3mm x 3mm
QFN10 package with an exposed pad.
FEATURES
Guaranteed Industrial/Automotive
Temperature Range Limits
Wide 3.8V to 55V Operating Input Range
300mΩ Internal Power MOSFET
Up to 2MHz Programmable Switching
Frequency
140μA Quiescent Current
Stable with Ceramic Capacitor
External Soft-Start
Up to 95% Efficiency
Output Adjustable from 0.8V to 52V
Available in QFN10 (3mmx3mm) package
AEC-Q100 Qualified
APPLICATIONS
High-Voltage Power Conversion
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered 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
MPQ4561 Rev. 1.11
www.MonolithicPower.com
3/29/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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