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MPQ4569 4.5-75V, 0.3A Synchronous Step-Down Converter QFN-10
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pMPS MPQ4569 — synchronous step-down converter, 4.5-75V input, 0.3A output, QFN-10./p
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MPQ4569 4.5-75V, 0.3A Synchronous Step-Down Converter QFN-10
MPS MPQ4569 is a synchronous step-down converter that accepts 4.5 V to 75 V input, delivers 0.3 A, supplied in a QFN-10 package.
Key Specifications
| Part Number | MPQ4569 |
| Input Voltage | 4.5 V to 75 V |
| Output Current | 0.3 A |
| Quiescent Current | 20 uA |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-10 |
| Ordering Codes | MPQ4569 |
Features
- 20μA Quiescent Current (Active mode)
- Wide 4.5V to 75V Operating Input Range
- 1.2Ω/0.45Ω Internal Power MOSFETs
- Programmable Soft-Start
- FB-Tolerance: 1% at Room Temperature; 2% at Full Temperature.
- Adjustable Output Voltage
- 1V Reference Voltage Output for QFN Package
- Low Shutdown Mode Current: 5μA
- Available in QFN-10 (3mmx3mm) and SOIC-8 EP Packages
- Available in AEC-Q100 Grade 1
Applications
- Automotive Systems
- Industrial Power Systems
- Distributed Power Systems
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-10 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MPQ4569?
4.5–75 V input and 0.3 A output.
Which package is the MPQ4569 available in?
QFN-10.
Shenzhen Gaorunxin Technology Co., Ltd
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