17A, 600kHz, 20V Wide Input Range,
Synchronous Boost Converter
in a small 3x4mm QFN Package
MPS CONFIDENTIAL AND PROPRIETARY INFORMATION– INTERNAL USE ONLY
The MP3428 is a 600kHz fixed-frequency, high-
efficiency, wide input range, current-mode
boost converter with optional internal or
external current-sensing configuration for high-
integration and high-power applications. With a
current limit above 17A, the MP3428 supports a
wide range of applications including POS,
Thunderbolt, Bluetooth Audio, Power Banks,
and Fuel Cells. The MP3428 features a 10mΩ,
24V power switch and a synchronous gate
driver for high efficiency. An external
compensation pin gives the user flexibility in
setting loop dynamics and obtaining optimal
transient performance at all conditions.
The MP3428 includes under-voltage lockout
(UVLO), switching-current limiting and thermal
shutdown (TSD) to prevent damage in the
event of an output overload.
The MP3428 is available in a low-profile 22-pin
3mmx4mm QFN package.
3V-to-20V Wide Input Range
Integrated 10mΩ Low-Side Power FET
SDR Driver for Synchronous Solution
>17A Switch-Current Limit
Up to 97.5% Efficiency
Optional Internal/External Current-
External Soft-Start and Compensation for
Programmable UVLO and Hysteresis
< 1µA Shutdown Current
Thermal Shutdown at 150℃
Available in a 3x4mm QFN-22 Package
Notebooks and Tablets
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
22μF x 2
22μF x 3
MP3428 Rev. 1.0
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.