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MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26
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pMPS MPQ4485-AEC1 — Step-Down Converter, 6-36V input, 6 A output, QFN-26, AEC-Q100./p
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MPQ4485-AEC1 6-36V, 6A Step-Down Converter QFN-26
The MPS MPQ4485-AEC1 is a Step-Down Converter. It operates from a 6 V to 36 V input, is rated for 6 A and switches at 450 kHz. It is supplied in a QFN-26 package. The part is AEC-Q100 qualified.
The MPQ4485 integrates a monolithic, step- down, switch-mode converter with two USB current-limit switches and charging port identification circuitry.
Key Specifications
| Part Number | MPQ4485-AEC1 |
| Function | Step-Down Converter |
| Input Voltage | 6 V to 36 V |
| Output Voltage | 5.17 V |
| Current Rating | 6 A |
| Switching Frequency | 450 kHz |
| Package | QFN-26 |
| Qualification | AEC-Q100 |
| Ordering Codes | MPQ4485-AEC1 |
Features
- Wide 6V to 36V Operating Input Voltage Range
- Fixed 5.17V Output Voltage
- 90mV Line Drop Compensation
- Accurate USB1/USB2 Output Current Limit
- 18mΩ/15mΩ Low RDS(ON) Internal Buck Power MOSFETs
- 18mΩ/18mΩ Low RDS(ON) Internal USB1/USB2 Power MOSFETs
- 450kHz Switching Frequency
- Forced CCM Operation
- Load Shedding versus Temperature for MPQ4485GU-LS-AEC1
- USB Output Over-Voltage Protection (OVP)
Typical Application Circuit
Applications
- USB Charging Downstream Port (CDP)
- 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 MPQ4485-AEC1 support?
6 V to 36 V. The rated output is 6 A.
Which package and ordering codes apply to the MPQ4485-AEC1?
QFN-26; order codes include MPQ4485-AEC1.
What are the defining features of the MPQ4485-AEC1?
Wide 6V to 36V Operating Input Voltage Range Fixed 5.17V Output Voltage
Is the MPQ4485-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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