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MP4566 4.5-36V, 0.6A, 1MHz Step-Down Converter QFN8
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pMPS MP4566 — step-down converter, 4.5-36V input, 0.6A output, 1 MHz, QFN8./p
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MP4566 4.5-36V, 0.6A, 1MHz Step-Down Converter QFN8
MPS MP4566 is a step-down converter that accepts 4.5 V to 36 V input, delivers 0.6 A, switches at 1 MHz, supplied in a QFN8 package.
Key Specifications
| Part Number | MP4566 |
| Input Voltage | 4.5 V to 36 V |
| Output Current | 0.6 A |
| Switching Frequency | 1 MHz |
| Quiescent Current | 35 uA |
| Topology | Step-Down Converter |
| Package | QFN8 |
| Ordering Codes | MP4566 |
Features
- 35μA Quiescent Current
- Low Shutdown Mode Current: <2μA
- Wide 4.5V to 36V Operating Input Range
- 450mΩ Internal Power MOSFET
- Fixed 1MHz Switching Frequency
- Internally compensated
- Stable with Ceramic Output Capacitors
- Internal Soft-Start
- Precision Current Limit Without Current Sensing Resistor
- High Light Load Efficiency up to 77% at 1mA
Applications
- Adapter-Based/Handheld Applications
- Notebook/Netbook PCs
- 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 QFN8 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP4566?
4.5–36 V input and 0.6 A output.
What switching frequency does the MP4566 run at?
1 MHz.
Which package is the MP4566 available in?
QFN8.
Shenzhen Gaorunxin Technology Co., Ltd
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