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MPQ4348-AEC1 3.3-36V, 5A, 350kHz Synchronous Step-Down Converter QFN-17
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pMPS MPQ4348-AEC1 — synchronous step-down converter, 3.3-36V input, 5A output, 350 kHz, QFN-17./p
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MPQ4348-AEC1 3.3-36V, 5A, 350kHz Synchronous Step-Down Converter QFN-17
MPS MPQ4348-AEC1 is a synchronous step-down converter that accepts 3.3 V to 36 V input, delivers 5 A, switches at 350 kHz, supplied in a QFN-17 package.
Key Specifications
| Part Number | MPQ4348-AEC1 |
| Input Voltage | 3.3 V to 36 V |
| Output Current | 5 A |
| Switching Frequency | 350 kHz |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-17 |
| Ordering Codes | MPQ4348-AEC1 |
Features
- High Performance for Improved Thermals: o Internal 60mΩ HS-FET and 35mΩ LS- FET
- Additional Features:
- Fixed Output Options (1): 1V, 1.1V, 1.8V, 2.5V, 3.0V, 3.3V, 3.8V, and 5V
- Power Good (PG) Output
- Synchronizable to an External Clock
- Synchronized Clock Output
- External Soft Start (SS)
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-17 (3mmx4mm) Package for the MPQ4348 and a QFN- 19 (3mmx4mm) Package for the MPQ4348J
Applications
- Automotive Clusters
- Automotive Infotainment
- Advanced Driver Assistance Systems (ADAS)
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- AEC-Q100 qualification suits this part to automotive rails.
- Package QFN-17 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MPQ4348-AEC1?
3.3–36 V input and 5 A output.
What switching frequency does the MPQ4348-AEC1 run at?
350 kHz.
Which package is the MPQ4348-AEC1 available in?
QFN-17.
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