The Future of Analog IC Technology
20V, 4A Synchronous
The MP28251 is a synchronous, rectified, step-
down, switch-mode converter with internal
power MOSFETs. It offers a very compact
solution to achieve a 4A continuous output
current over a wide input supply range with
excellent load and line regulation. The
MP28251 has synchronous mode operation for
higher efficiency over the output current load
Current-mode operation provides a fast
transient response and eases loop stabilization.
Full protection features include over-current
protection and thermal shutdown.
The MP28251 requires a minimal number of
readily-available standard external components
and is available in a space saving 2mm×3mm
14-pin QFN package.
Wide 4.75V-to-20V Operating Input Range
4A Output Current
Low RDS(ON) Internal Power MOSFETs
Programmable Switching Frequency
Programmable EN Delay
Frequency SYNC from 300kHz to 2MHz
Low Power Mode Selectable by an External
External Soft Start
OCP and Thermal Shutdown
Available in a 14-pin QFN2×3 Package
Set Top Boxes
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status, please visit MPS website under Products, Quality Assurance page.
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Monolithic Power Systems, Inc.
MP28251 Rev. 1.16
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