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MP5455 2.7-7V Peak Power Assist QFN-20
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pMPS MP5455 — Peak Power Assist, 2.7-7V input, QFN-20./p
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MP5455 2.7-7V Peak Power Assist QFN-20
The MPS MP5455 is a Peak Power Assist. It operates from a 2.7 V to 7 V input. It is supplied in a QFN-20 package.
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.
Key Specifications
| Part Number | MP5455 |
| Function | Peak Power Assist |
| Input Voltage | 2.7 V to 7 V |
| Package | QFN-20 |
| Lifecycle | NRFND |
| Ordering Codes | MP5455 |
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
Typical Application Circuit
Applications
- Peak Power Smoother for Smart Speakers
- Artificial Intelligence (AI)-Enabled Speakers
- Power Back-Up
Design Notes
- Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
- In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
- Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
- Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.
Common Questions
What input voltage does the MP5455 support?
2.7 V to 7 V.
Which package and ordering codes apply to the MP5455?
QFN-20; order codes include MP5455.
What are the defining features of the MP5455?
Power Back-Up Management Circuit Input Current Limiter with Integrated 60mΩ MOSFET
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