MP4462
3.5A, 4MHz, 36V
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP4462 is a high frequency step-down
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides 3.5A output with current mode control for
fast loop response and easy compensation.
The wide 3.8V to 36V input range accommodates
a variety of step-down applications, including
those in an automotive input environment. A
120µA operational quiescent current allows use in
battery-powered applications.
High power conversion efficiency over a wide
load range is achieved by scaling down the
switching frequency at light load condition to
reduce the switching and gate driving losses.
The frequency foldback helps prevent inductor
current runaway during startup and thermal
shutdown provides reliable, fault tolerant
operation.
In some applications, such as AM radio and
ADSL applications, in which the device is
sensitive to frequency band, the MP4462 can
avoid the related EMI problem by setting the
frequency at 4MHz.
The MP4462 is available in small 3x3mm QFN10
and SOIC8E packages.
FEATURES
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120μA Quiescent Current
Wide 3.8V to 36V Operating Input Range
150mΩ Internal Power MOSFET
Up to 4MHz Programmable Switching
Frequency
Ceramic Capacitor Stable
Internal Soft-Start
Internally Set Current Limit without a
Current Sensing Resistor
Output Adjustable from 0.8V to 30V
Available in 3x3mm QFN10 and SOIC8E
Packages.
High Voltage Power Conversion
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
APPLICATIONS
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All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
C4
100nF
10
V
IN
8,9
VIN
BST
SW
1,2
D1
EN
3
EN
FB
5
V
OUT
3.3V
MP4462
7
FREQ
GND
6
COMP
4
C3
220pF
C6
NS
MP4462 Rev. 1.02
3/4/2013
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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