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MPQ4481-AEC1 6-36V, 3A Step-Down Converter QFN-26
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pMPS MPQ4481-AEC1 — Step-Down Converter, 6-36V input, 3 A output, QFN-26, AEC-Q100./p
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MPQ4481-AEC1 6-36V, 3A Step-Down Converter QFN-26
The MPS MPQ4481-AEC1 is a Step-Down Converter. It operates from a 6 V to 36 V input and is rated for 3 A. It is supplied in a QFN-26 package. The part is AEC-Q100 qualified.
The MPQ4481 integrates a monolithic, step- down, switch-mode converter with a single USB current-limit switch and Type-C 5V @ 3A mode configuration channel for the USB port.
Key Specifications
| Part Number | MPQ4481-AEC1 |
| Function | Step-Down Converter |
| Input Voltage | 6 V to 36 V |
| Current Rating | 3 A |
| Package | QFN-26 |
| Qualification | AEC-Q100 |
| Lifecycle | NRFND |
| Ordering Codes | MPQ4481-AEC1 |
Features
- Supports DCP Schemes for BC1.2, Divider Mode, and 1.2V/1.2V Mode
- Supports USB Type-C 5V @ 3A DFP Mode
- Wide 6V to 36V Operating Input Range
- Selectable VOUT: 5.1V, 5.17V, and 5.3V
- Programmable Line Drop Compensation
- Accurate USB Output Current Limit
- Low Dropout Mode
- 25mΩ/20mΩ Low RDS(ON) Internal Buck Power MOSFETs
- 15mΩ Low RDS(ON) Internal USB Power MOSFETs
- Up to 2.2MHz Operation Frequency
Typical Application Circuit
Applications
- USB-Dedicated Charging Ports (DCP)
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 MPQ4481-AEC1 support?
6 V to 36 V. The rated output is 3 A.
Which package and ordering codes apply to the MPQ4481-AEC1?
QFN-26; order codes include MPQ4481-AEC1.
What are the defining features of the MPQ4481-AEC1?
Supports DCP Schemes for BC1.2, Divider Mode, and 1.2V/1.2V Mode Supports USB Type-C 5V @ 3A DFP Mode
Is the MPQ4481-AEC1 qualified for automotive designs?
Yes — it is AEC-Q100 qualified. Confirm the grade against the qualification summary in the datasheet before specifying it on a safety-related rail.
Shenzhen Gaorunxin Technology Co., Ltd
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