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MP2560 Datasheet(PDF) 1 Page - Monolithic Power Systems

Part No. MP2560
Description  2.5A, 4MHz, 42V Step-Down Converter
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Maker  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
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MP2560 Datasheet(HTML) 1 Page - Monolithic Power Systems

 
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MP2560
2.5A, 4MHz, 42V
Step-Down Converter
MP2560 Rev. 1.2
www.MonolithicPower.com
1
1/25/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2560 is a high frequency step-down
switching regulator with an integrated internal
high-side high voltage power MOSFET. It
provides 2.5A output with current mode control for
fast loop response and easy compensation.
The wide 4.5V to 42V 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 MP2560 is able to
prevent EMI (Electromagnetic Interference) noise
problems, such as those found in AM radio and
ADSL applications.
The MP2560 is available in small 3mm x 3mm
QFN10 and thermally enhanced SOIC8 packages.
FEATURES
• 120µA Quiescent Current
• Wide 4.5V to 42V Operating Input Range
• 220mΩ 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 93% Efficiency
• Output Adjustable from 0.8V to 39V
• Available in 3x3 QFN10 and Thermally
Enhanced SOIC8 Packages
APPLICATIONS
• High Voltage Power Conversion
• Automotive Systems
• Industrial Power Systems
• Distributed Power Systems
• Battery Powered Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
C6
NS
D1
VOUT
3.3V
VIN
VIN
EN
FREQ
GND
BST
SW
FB
COMP
MP2560
EN
6
10
1,2
4
5
8,9
3
7
0.5
1
1.5
2
2.5
0
LOAD CURRENT (A)
95
90
85
80
75
70
65
60
55
50
Efficiency vs.
Load Current
VIN=36V
VIN=8V
VIN=24V
VIN=12V
VOUT
fs=500kHz
=3.3V


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