The Future of Analog IC Technology
21V, 3A, 500kHz, Synchronous
The MP28266 is a synchronous, rectified, step-
down, switch-mode converter with built in
internal power MOSFETs. It offers a very
compact solution to achieve a 3A continuous
output current over a wide input supply range,
with excellent load and line regulation. The
MP28266 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 MP28266 requires a minimal number of
readily-available standard external components,
and is available in a space-saving 3mm×4mm
14-pin QFN package.
Wide 6V-to-21V Operating Input Range
0.6V Internal Reference with 2% Accuracy
3A Output Current
Low-Rds(ON) Internal Power MOSFETs
Fixed 500kHz Switching Frequency
Frequency SYNC from a 300kHz-to-2MHz
AAM Power-Save Mode
OCP and Thermal Shutdown
Available in a 3mm×4mm QFN14 Package.
Set Top Boxes
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
0.1 F 2.8 H
R1 22 F
MP28266 Rev. 1.0
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