The Future of Analog IC Technology
The MP28275 is a high frequency synchronous
rectified step-down switch mode converter with
built-in internal power MOSFETs. It offers a
very compact solution to achieve 5A continuous
output current with excellent load and line
regulation. The MP28275 operates at high
efficiency over a wide output current load range.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include OCP and thermal
The MP28275 requires a minimum number of
readily available standard external components
and is available in a space saving 3mm x 4mm
14-pin QFN package.
7V, 5A, 1.1MHz
Synchronous Step-down Converter
4.5V to 7V Operating Input Range
5A Output Current
Low RDS(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction
Fixed 1.1MHz Switching Frequency
Sync from 300kHz to 2MHz External Clock
Over-Current-Protection and Hiccup
Output Adjustable from 0.8V
Available in 3x4mm QFN14 Package
Notebook Systems and I/O Power
Digital Set Top Boxes
Personal Video Recorders
Flat Panel Television and Monitors
Distributed Power Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
The information in this datasheet about the product and its associated
technologies are proprietary and intellectual property of Monolithic Power
Systems and are protected by copyright and pending patent applications.
TYPICAL APPLICATION （FOR NOTEBOOK）
EN 7 EN/SYNC
12, 13, 14
OUTPUT CURRENT (A)
MP28275 Rev. 1.0
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.