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Mini 360 DC-DC Buck Converter — 2A Step-Down, 4.75–23V to 1–17V, 96% Efficiency
Mini 360 DC-DC Buck Converter 2A Step-Down, 4.75–23V to 1–17V, 96% Efficiency
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Mini 360 DC-DC Buck Converter — 2A Step-Down, 4.75–23V to 1–17V, 96% Efficiency
The Mini 360 is an ultra-compact DC-DC step-down (buck) converter module based on the MP2307 switching regulator IC. With 96% peak efficiency, 2A output current, and an adjustable output from 1V to 17V via an onboard trimmer potentiometer, it is the most popular miniature buck converter for RC aircraft, Arduino power supplies, and portable electronics voltage regulation. Its 17×11mm footprint makes it the smallest adjustable buck converter available for breadboard and PCB integration.
Key Specifications
| Parameter | Value |
|---|---|
| Regulator IC | MP2307 (MPS) |
| Input Voltage | 4.75V – 23V |
| Output Voltage | 1.0V – 17V (adjustable, must be < Vin) |
| Max Output Current | 2A continuous (3A peak) |
| Switching Frequency | 340kHz |
| Efficiency | Up to 96% |
| Output Ripple | <30mV (at 2A) |
| Operating Temperature | -40°C to +85°C |
| PCB Size | ~17 × 11mm |
Mini 360 vs Common Buck Converter Alternatives
| Module | Max Current | Size | Efficiency | Best For |
|---|---|---|---|---|
| Mini 360 (this) | 2A | 17×11mm (ultra-compact) | 96% | RC, compact Arduino supply |
| LM2596 module | 3A | ~43×21mm | ~75% | General purpose, higher current |
| XL4015 CC/CV | 5A | ~54×23mm | ~96% | Battery charging, high power |
| MT3608 boost | 2A | ~36×17mm | ~93% | Step-up only |
Why Choose Mini 360?
- Ultra-compact 17×11mm — smallest adjustable buck converter, fits inside RC aircraft fuselages and tight enclosures
- 96% efficiency — minimal heat generation, no heatsink needed at 2A
- 340kHz switching — small inductor and capacitors, contributes to compact size
- -40°C to +85°C — wide temperature range for outdoor and RC applications
- 2A continuous — sufficient for Arduino + sensors, ESP32, servo, and small motors
Compatible With / Common Use Cases
- RC aircraft power: Step down 3S LiPo (11.1V) to 5V for flight controller, receiver, and servos
- Arduino power supply: Step down 12V to 5V for Arduino UNO or 3.3V for ESP32
- Raspberry Pi power: Step down 12V to 5.1V for Raspberry Pi 3/4 (requires stable 5.1V/2.5A)
- LED strip power: Step down 24V to 12V for 12V LED strips from 24V supply
- Solar power regulation: Step down 18V solar panel to 5V/12V for charging or direct use
Frequently Asked Questions
Q: How do I adjust the output voltage on Mini 360?
A: Connect input power and a voltmeter to the output. Use a small flat-head screwdriver to turn the onboard trimmer potentiometer (blue or white square component). Turn clockwise to increase voltage, counter-clockwise to decrease. Adjust slowly — the trimmer is sensitive. Set output voltage before connecting the load.
Q: Can Mini 360 output 5V from a 3S LiPo (11.1V) for an RC receiver?
A: Yes — Mini 360 handles 4.75–23V input, so 3S LiPo (9.9V–12.6V) is within range. Set output to 5.0V. At 2A output, efficiency is ~93–96%, so heat generation is minimal. For RC use, add a 100μF capacitor at the output to handle servo current spikes.
Q: What is the minimum input-output voltage difference (dropout) for Mini 360?
A: Mini 360 requires a minimum ~1V input-output differential (Vin ≥ Vout + 1V). For 5V output, minimum input is 6V. For 3.3V output, minimum input is 4.3V. Below this differential, the output voltage will drop below the set point.
Package Contents
- 1× Mini 360 DC-DC Buck Converter Module (MP2307, 17×11mm)
