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MP2131 2.7-5.5V, 4A, 1.2MHz Synchronous Step-Down Converter QFN-12
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pMPS MP2131 — synchronous step-down converter, 2.7-5.5V input, 4A output, 1.2 MHz, QFN-12./p
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MP2131 2.7-5.5V, 4A, 1.2MHz Synchronous Step-Down Converter QFN-12
MPS MP2131 is a synchronous step-down converter that accepts 2.7 V to 5.5 V input, delivers 4 A, switches at 1.2 MHz, supplied in a QFN-12 package.
Key Specifications
| Part Number | MP2131 |
| Input Voltage | 2.7 V to 5.5 V |
| Output Current | 4 A |
| Switching Frequency | 1.2 MHz |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-12 |
| Ordering Codes | MP2131 |
Features
- Wide 2.7 V to 5.5 V Operating Input Range
- Output Voltage as Low as 0.6 V
- 4 A Output Current
- 35 mΩ and 18 mΩ Internal Power MOSFET
- Above 96% Peak Efficiency
- Above 80% Light Load Efficiency
- Low IQ: 19 μA
- 1.2 MHz Frequency
- 100% Duty Cycle in Dropout
- 0.5 ms Internal Soft-Start Time
Applications
- Storage Drives
- Portable/Handheld Devices
- Wireless/Networking Cards
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.
- Package QFN-12 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2131?
2.7–5.5 V input and 4 A output.
What switching frequency does the MP2131 run at?
1.2 MHz.
Which package is the MP2131 available in?
QFN-12.
Shenzhen Gaorunxin Technology Co., Ltd
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