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MP4423 4-30V, 3A, 410kHz Step-Down Converter QFN-8
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pMPS MP4423 — step-down converter, 4-30V input, 3A output, 410 kHz, QFN-8./p
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MP4423 4-30V, 3A, 410kHz Step-Down Converter QFN-8
MPS MP4423 is a step-down converter that accepts 4 V to 30 V input, delivers 3 A, switches at 410 kHz, supplied in a QFN-8 package.
Key Specifications
| Part Number | MP4423 |
| Input Voltage | 4 V to 30 V |
| Output Current | 3 A |
| Switching Frequency | 410 kHz |
| Topology | Step-Down Converter |
| Package | QFN-8 |
| Ordering Codes | MP4423 |
Features
- Wide 4V to 30V Continuous Operating Input Range
- 36V Input Transient Tolerance for Automotive Load Dump
- 85mΩ/55mΩ Low RDS(ON) Internal Power MOSFETs
- High-Efficiency Synchronous Mode Operation
- Default 410kHz Switching Frequency
- Synchronizes to a 200kHz to 2.2MHz External Clock
- High Duty Cycle for Automotive Cold-crank
- Power-Save Mode
- Internal Soft-Start
- Power Good
Applications
- Automotive
- Industrial Control System
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-8 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP4423?
4–30 V input and 3 A output.
What switching frequency does the MP4423 run at?
410 kHz.
Which package is the MP4423 available in?
QFN-8, with ordering codes MP4423GQ-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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