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MPQ4568 4.5-45V Synchronous Step-Down Converter QFN10
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pMPS MPQ4568 — synchronous step-down converter, 4.5-45V input, QFN10./p
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MPQ4568 4.5-45V Synchronous Step-Down Converter QFN10
MPS MPQ4568 is a synchronous step-down converter that accepts 4.5 V to 45 V input, supplied in a QFN10 package.
Key Specifications
| Part Number | MPQ4568 |
| Input Voltage | 4.5 V to 45 V |
| Quiescent Current | 20 uA |
| Topology | Synchronous Step-Down Converter |
| Package | QFN10 |
| Ordering Codes | MPQ4568 |
Features
- 20μA Quiescent Current
- Wide 4.5V to 45V Operating Range with 50V Input OVP
- 60V Integrated MOSFETs with 0.7Ω and 2.25Ω Ron
- Programmable Switching Frequency
- Stable with Ceramic Output Capacitors
- Low Output Ripple
- Programmable Soft-Start
- Adjustable Input UVLO Hysteresis
- Precision Peak Current Limit without Current-Sensing Resistor
- Programmable Peak Current Limit
Applications
- 4mA to 20mA Current Loops
- 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 QFN10 — check the land pattern in the datasheet before layout.
Common Questions
Which package is the MPQ4568 available in?
QFN10.
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