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MP2149 6V, 1A, 1MHz Buck Regulator TSOT23
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pMPS MP2149 — buck regulator, 6V input, 1A output, 1 MHz, TSOT23./p
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MP2149 6V, 1A, 1MHz Buck Regulator TSOT23
MPS MP2149 is a buck regulator that accepts up to 6 V input, delivers 1 A, switches at 1 MHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MP2149 |
| Input Voltage | up to 6 V |
| Output Current | 1 A |
| Switching Frequency | 1 MHz |
| Quiescent Current | 45 uA |
| Topology | Buck Regulator |
| Package | TSOT23 |
| Ordering Codes | MP2149 |
Features
- Dual 1A-Output Current
- >93% Peak Efficiency
- >80% Light-Load Efficiency
- Wide 2.7V-to-6V Operating Input Range
- 100mΩ and 40mΩ Internal Power MOSFET
- 1MHz Fixed Switching Frequency
- Adjustable Output from 0.608V to VIN
- 180° Phase-Shifted Operation
- 100% Duty-Cycle Operation
- 45µA Quiescent Current
Applications
- Small/Handhold Devices
- DVD Drivers
- Portable Instruments
- Smartphones and Feature Phones
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 TSOT23 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2149?
–6 V input and 1 A output.
What switching frequency does the MP2149 run at?
1 MHz.
Which package is the MP2149 available in?
TSOT23.
Shenzhen Gaorunxin Technology Co., Ltd
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