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MP4350 4.5-20V, 2.5A, 4MHz Step-Down Converter QFN10
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pMPS MP4350 — step-down converter, 4.5-20V input, 2.5A output, 4 MHz, QFN10./p
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MP4350 4.5-20V, 2.5A, 4MHz Step-Down Converter QFN10
MPS MP4350 is a step-down converter that accepts 4.5 V to 20 V input, delivers 2.5 A, switches at 4 MHz, supplied in a QFN10 package.
Key Specifications
| Part Number | MP4350 |
| Input Voltage | 4.5 V to 20 V |
| Output Current | 2.5 A |
| Switching Frequency | 4 MHz |
| Quiescent Current | 100 uA |
| Topology | Step-Down Converter |
| Package | QFN10 |
| Ordering Codes | MP4350 |
Features
- 100μA Quiescent Current
- Wide 4.5V to 20V Operating Input Range
- 150mΩ Internal Power MOSFET
- Up to 4MHz Programmable Switching Frequency
- Ceramic Capacitor Stable
- Internal Soft-Start
- Internal Set Current Limit without a Current Sensing Resistor
- Up to 95% Efficiency
- Output Adjustable from 0.8V to 16V
- Available in a 10-Pin QFN (3mm x 3mm) Package
Applications
- DSL Power
- Set Top Boxes
- Battery Powered Systems "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.
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
What is the input and output rating of the MP4350?
4.5–20 V input and 2.5 A output.
What switching frequency does the MP4350 run at?
4 MHz, programmable.
Which package is the MP4350 available in?
QFN10.
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