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MP4570 4.5-55V, 3A Step-Down Converter TSSOP-20
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pMPS MP4570 — step-down converter, 4.5-55V input, 3A output, TSSOP-20./p
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MP4570 4.5-55V, 3A Step-Down Converter TSSOP-20
MPS MP4570 is a step-down converter that accepts 4.5 V to 55 V input, delivers 3 A, supplied in a TSSOP-20 package.
Key Specifications
| Part Number | MP4570 |
| Input Voltage | 4.5 V to 55 V |
| Output Current | 3 A |
| Topology | Step-Down Converter |
| Package | TSSOP-20 |
| Ordering Codes | MP4570 |
Features
- Wide Input Voltage Range: 4.5V to 55V
- 90mΩ and 70mΩ Internal High and Low Power MOSFETs
- Peak Current Mode Control
- Programmable Switching Frequency
- Stable Independent on Output Capacitors
- Optional External Soft Start
- OCP Protection with Valley Current Detection
- Support External SYNC Clock
- OVP Protection
- Current Limit Decreasing during Output Short for Better Thermal Performance
Applications
- PoE Input Non-isolated Buck
- Industrial Power Systems
- Printers and Scanners
- Automotive 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 TSSOP-20 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP4570?
4.5–55 V input and 3 A output.
Which package is the MP4570 available in?
TSSOP-20.
Shenzhen Gaorunxin Technology Co., Ltd
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