MP3428

17A, 600kHz, 20V Wide Input Range,

Synchronous Boost Converter

in a small 3x4mm QFN Package

MP3428 Rev. 1.0

www.MonolithicPower.com

1

12/23/2014

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

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.

FEATURES

 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-

Sensing Configuration

 External Soft-Start and Compensation for

Higher Flexibility

 Programmable UVLO and Hysteresis

 < 1µA Shutdown Current

 Thermal Shutdown at 150℃

 Available in a 3x4mm QFN-22 Package

APPLICATIONS

 Thunderbolt Interface

 Notebooks and Tablets

 Bluetooth Audio

 Power Banks

 Fuel Cells

 POS Systems

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.

TYPICAL APPLICATION

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