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MP4571 4.5-60V, 1A, 2.2MHz Synchronous Buck Converter QFN-12
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pMPS MP4571 — synchronous buck converter, 4.5-60V input, 1A output, 2.2 MHz, QFN-12./p
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MP4571 4.5-60V, 1A, 2.2MHz Synchronous Buck Converter QFN-12
MPS MP4571 is a synchronous buck converter that accepts 4.5 V to 60 V input, delivers 1 A, switches at 2.2 MHz, supplied in a QFN-12 package.
Key Specifications
| Part Number | MP4571 |
| Input Voltage | 4.5 V to 60 V |
| Output Current | 1 A |
| Switching Frequency | 2.2 MHz |
| Quiescent Current | 40 uA |
| Topology | Synchronous Buck Converter |
| Package | QFN-12 |
| Ordering Codes | MP4571 |
Features
- Wide 4.5V to 60V Operating Input Range
- 1A Continuous Output Current
- High-Efficiency Synchronous Mode Control
- 250mΩ/45mΩ Internal Power MOSFETs
- Configurable Frequency Up to 2.2MHz
- 180° Out-of-Phase SYNCO Clock
- 40μA Quiescent Current
- Low Shutdown Mode Current: 2μA
- FB Tolerance: 1% at Room Temp, 2% at Full Temp
- Selectable AAM or Forced CCM Operation at Light Load
Typical Application Circuit
Applications
- Automotive Infotainment
- Automotive Lamps and LEDs
- Automotive Motor Control
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-12 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP4571?
4.5–60 V input and 1 A output.
What switching frequency does the MP4571 run at?
2.2 MHz.
Which package is the MP4571 available in?
QFN-12, with ordering codes MP4571GQB-Z.
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