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MP4576 4.5-60V, 400kHz Synchronous Buck Converter QFN-12
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pMPS MP4576 — synchronous buck converter, 4.5-60V input, 400 kHz, QFN-12./p
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MP4576 4.5-60V, 400kHz Synchronous Buck Converter QFN-12
MPS MP4576 is a synchronous buck converter that accepts 4.5 V to 60 V input, switches at 400 kHz, supplied in a QFN-12 package.
Key Specifications
| Part Number | MP4576 |
| Input Voltage | 4.5 V to 60 V |
| Switching Frequency | 400 kHz |
| Topology | Synchronous Buck Converter |
| Package | QFN-12 |
| Ordering Codes | MP4576 |
Features
- Extends Vehicle Battery Life: o Low Quiescent Current in Standby Mode (40µA)
- Cooler Thermals: o Less than 8°C TJ Rise at 600mA / 400kHz o 91% Efficiency (24V to 5V, 600mA, 400kHz) o Low-Ohmic MPS BCD FET Technology
- Low-Noise EMI/EMC: o MeshConnectTM Flip Chip Packaging o Operates Outside of AM Radio Band
- Reduces Board Size and BOM: o Integrated Compensation Network o Available in a Small QFN-12 (2.5mmx3mm) Package
Applications
- Infotainment
- Lamps and LEDs
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-12 — check the land pattern in the datasheet before layout.
Common Questions
What switching frequency does the MP4576 run at?
400 kHz.
Which package is the MP4576 available in?
QFN-12, with ordering codes MP4576GQBE-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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