MP1472
2A, 18V Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
The MP1472 is a monolithic synchronous buck
regulator. The device integrates a 175mΩ high-
side MOSFET and a 115mΩ low-side MOSFET
that provide 2A of continuous load current over
a wide input voltage of 4.75V to 18V. Current
mode control provides fast transient response
and cycle-by-cycle current limit.
An adjustable soft-start prevents inrush current
at turn-on, and in shutdown mode the supply
current drops to 1µA.
This device, available in an 8-pin TSOT23-8
package, provides a very compact solution with
minimal external components.
FEATURES
2A Output Current
Wide 4.75V to 18V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.923V to 15V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output
Capacitors
Fixed 340kHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
8–Pin TSOT23-8
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
APPLICATIONS
EVALUATION BOARD REFERENCE
Board Number
EV1472GJ-00A
Dimensions
2.5”X x 2.5”Y x 0.5”Z
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“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs. Load Current
100
90
80
70
60
50
40
30
20
10
0
0.01
V
IN
=18V
0.1
1
LOAD CURRENT (A)
10
V
OUT
=3.3V
EFFICIENCY (%)
V
IN
=4.75V
V
IN
=12V
MP1472 Rev. 1.0
9/2/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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