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MP2128 2.5-6V, 1A, 3MHz Synchronous Step-Down Converter SOT23
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pMPS MP2128 — synchronous step-down converter, 2.5-6V input, 1A output, 3 MHz, SOT23./p
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MP2128 2.5-6V, 1A, 3MHz Synchronous Step-Down Converter SOT23
MPS MP2128 is a synchronous step-down converter that accepts 2.5 V to 6 V input, delivers 1 A, switches at 3 MHz, supplied in a SOT23 package.
Key Specifications
| Part Number | MP2128 |
| Input Voltage | 2.5 V to 6 V |
| Output Current | 1 A |
| Switching Frequency | 3 MHz |
| Topology | Synchronous Step-Down Converter |
| Package | SOT23 |
| Ordering Codes | MP2128 |
Features
- High Efficiency: Up to 95%
- 3MHz Constant Switching Frequency
- 1A Available Load Current
- 2.5V to 6V Input Voltage Range
- Output Voltage as Low as 0.6V
- Current Mode Control
- Cycle-by-Cycle Over Current Protection
- Short Circuit Protection
- Thermal Shutdown
- <1µA Shutdown Current
Applications
- Cellular Phones
- Microprocessors and DSP Core Supplies
- PDAs and Smart Phones
- MP3 and Portable Media Players
- Digital Still and Video Cameras
- Portable Instruments "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.
- Package SOT23 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2128?
2.5–6 V input and 1 A output.
What switching frequency does the MP2128 run at?
3 MHz.
Which package is the MP2128 available in?
SOT23.
Shenzhen Gaorunxin Technology Co., Ltd
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