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MP4573 4.5-60V, 2.5A, 2.2MHz Synchronous Buck Converter QFN-12
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pMPS MP4573 — synchronous buck converter, 4.5-60V input, 2.5A output, 2.2 MHz, QFN-12./p
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MP4573 4.5-60V, 2.5A, 2.2MHz Synchronous Buck Converter QFN-12
MPS MP4573 is a synchronous buck converter that accepts 4.5 V to 60 V input, delivers 2.5 A, switches at 2.2 MHz, supplied in a QFN-12 package.
Key Specifications
| Part Number | MP4573 |
| Input Voltage | 4.5 V to 60 V |
| Output Current | 2.5 A |
| Switching Frequency | 2.2 MHz |
| Quiescent Current | 40 uA |
| Topology | Synchronous Buck Converter |
| Package | QFN-12 |
| Ordering Codes | MP4573 |
Features
- Wide 4.5V to 60V Operating Input Range
- 2.5A Continuous Output Current
- High-Efficiency, Synchronous Mode Control
- 250mΩ/45mΩ Internal Power MOSFETs
- Up to 2.2MHz Configurable Frequency
- 180° Out-of-Phase SYNCO Clock
- 40μA Quiescent Current (IQ)
- Low 2μA Shutdown Current
- FB Tolerance: 1% at Room Temp, 2% at across the Full Temperature Range (-40°C to +125°C)
- Selectable Advanced Asynchronous Modulation (AAM) Mode or Forced Continuous Conduction Mode (FCCM) during Light-Load Operation
Applications
- Infotainment Systems
- Lamps and LEDs
- Motor Controls
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 MP4573?
4.5–60 V input and 2.5 A output.
What switching frequency does the MP4573 run at?
2.2 MHz.
Which package is the MP4573 available in?
QFN-12.
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