MP5455

Peak Power Assist for Smart/AI-Enabled

Speakers and Low-Power Applications

MP5455 Rev. 1.01

www.MonolithicPower.com

1

2/2/2018

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

© 2018 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP5455 is intelligently designed as a

power storage system, releasing energy as

needed during peak loading events, providing

an efficient solution for smart speakers. It is

also capable of providing back-up power in the

event of a power failure targeting solid state

drive supplications.

The internal input current limit block with dV/dt

control prevents inrush current during system

start-up. The storage capacitors charge while

sufficient power load is applied. At peak loading,

energy is released to maintain adequate

power

MPS’s patented power back-up control circuit

minimizes the storage capacitor requirement.

This control circuit pumps the input voltage to a

higher storage voltage and releases the energy

over a hold-up time to the system in the case of

an input outage. Storage and release voltages

are both programmable for different system

requirements.

The MP5455 requires a minimal number of

readily

available,

standard,

external

components and is available in a QFN-20

(3mmx4mm) package.

FEATURES

 Power Back-Up Management Circuit

 Input Current Limiter with Integrated 60mΩ

MOSFET

 Wide 2.7V to 7V Operating Input Range

 Up to 4.5A Input Current Limit

 Reverse-Current Protection

 Adjustable dV/dt Slew Rate for Bus Voltage

Start-Up

 Over-Temperature Protection (OTP)

 Available in a QFN-20 (3mmx4mm)

Package

APPLICATIONS

 Peak Power Smoother for Smart Speakers

 Artificial Intelligence (AI)-Enabled Speakers

 Power Back-Up

 Battery Hold-Up Supplies

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality

Assurance. “MPS” and “The Future of Analog IC Technology” are registered

trademarks of Monolithic Power Systems, Inc.

TYPICAL APPLICATION

Storage Release

1V/div.

10V/div.

10V/div.

2A/div.

5ms/div.