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MPQ4558 0.8-52V, 1A, 2MHz Step-Down Converter SOIC8E
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pMPS MPQ4558 — step-down converter, 0.8-52V input, 1A output, 2 MHz, SOIC8E./p
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MPQ4558 0.8-52V, 1A, 2MHz Step-Down Converter SOIC8E
MPS MPQ4558 is a step-down converter that accepts 0.8 V to 52 V input, delivers 1 A, switches at 2 MHz, supplied in a SOIC8E package.
Key Specifications
| Part Number | MPQ4558 |
| Input Voltage | 0.8 V to 52 V |
| Output Current | 1 A |
| Switching Frequency | 2 MHz |
| Quiescent Current | 140 uA |
| Topology | Step-Down Converter |
| Package | SOIC8E |
| Ordering Codes | MPQ4558 |
Features
- Guaranteed Industrial/Automotive Temperature Range Limits
- Wide 3.8V-to-55V Operating Input Range
- 250mΩ Internal Power MOSFET
- Up to 2MHz Programmable Switching Frequency
- 140μA Quiescent Current
- Stable with Ceramic Capacitors
- Internal Soft-Start
- Up to 95% Efficiency
- Output Adjustable from 0.8V to 52V
- Available in SOIC8E and 3mm x 3mm QFN10 Packages
Applications
- High-Voltage Power Conversion
- 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 SOIC8E — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MPQ4558?
0.8–52 V input and 1 A output.
What switching frequency does the MPQ4558 run at?
2 MHz, programmable.
Which package is the MPQ4558 available in?
SOIC8E.
Shenzhen Gaorunxin Technology Co., Ltd
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