MP2562
1A, 4MHz, 50V
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP2562 is a high frequency step-down
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides 1A output with current mode control for
fast loop response and easy compensation.
The wide 4.5V to 50V input range accommodates
a variety of step-down applications, including
those in an automotive input environment. A 12µA
shutdown mode 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.
By switching at 4MHz, the MP2562 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MP2562 is available in small 3mm x 3mm
QFN10 and SOIC8 packages.
FEATURES
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120μA Quiescent Current(12uA Shutdown)
Wide 4.5V to 50V Operating Input Range
460mΩ Internal Power MOSFET
Up to 4MHz Programmable Switching
Frequency
Stable with Ceramic Capacitor
Internal Soft-Start
Internally Set Current Limit without external
Current Sensing Resistor
Up to 95% Efficiency
Output Adjustable from 0.8V to 47V
Available in 3x3 QFN10 and SOIC8
Packages
High Voltage Power Conversion
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
APPLICATIONS
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“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
C1
100V
EN
R6
7
FREQ
GND
R4
6
R5
3
EN
VIN
BST
SW
1,2
D1
FB
5
R2
COMP
4
C3
220pF
R3
R1
C2
6.3V
90
L1
V
OUT
3.3V
V
IN
=
8V
80
EFFICIENCY (%)
70
60
50
40
10
V
IN
=
12V
V
IN
=
24V
V
IN
=
50V
V
IN
=
36V
MP2562
C6
NS
100
OUTPUT CURRENT (mA)
1000
MP2562 Rev. 0.91
4/5/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
