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MT3608 DC-DC Step-Up Boost Converter Module — 2–24V to 5–28V, 2A, Adjustable (3-Pack)
MT3608 DC-DC Step-Up Boost Converter Module 2–24V to 5–28V, 2A, Adjustable (3-Pack)
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MT3608 DC-DC Step-Up Boost Converter Module — 2–24V to 5–28V, 2A, Adjustable (3-Pack)
The MT3608 boost converter module steps up input voltages from 2V to 24V to an adjustable output of 5V to 28V at up to 2A, with up to 93% conversion efficiency. Built around the MT3608 current-mode PWM boost controller IC with integrated 4A switch, it requires only an onboard potentiometer adjustment to set the output voltage. Compact, efficient, and ready to use, it is the most popular boost module for Arduino battery projects, USB 5V generation, and LED power supplies.
Key Specifications
| Parameter | Value |
|---|---|
| Controller IC | MT3608 |
| Input Voltage | 2V – 24V |
| Output Voltage | 5V – 28V (adjustable, must be > Vin) |
| Max Output Current | 2A (with adequate input current) |
| Peak Efficiency | 93% |
| Switching Frequency | 1.2MHz |
| Output Voltage Adjustment | Onboard potentiometer |
| PCB Size | ~36 × 17mm |
| Quantity | 3 modules |
Why Choose MT3608 Boost Module?
- 2V minimum input — works from a single Li-ion cell (3.7V), 2×AA batteries (3V), or even a depleted 3.7V cell
- 1.2MHz switching — high frequency allows compact onboard inductor and capacitor
- 93% peak efficiency — minimal heat generation compared to linear boost approaches
- Onboard potentiometer — screwdriver-adjustable output voltage, no soldering required
- 3-pack value — one for each project, plus spares
MT3608 vs Common Boost Modules
| Module | Input Range | Max Output | Max Current | Best For |
|---|---|---|---|---|
| MT3608 | 2–24V | 28V | 2A | General boost, USB 5V, LED supply |
| LTC1871 | 3–35V | 35V | ~3A | Higher voltage/current applications |
| XL6009 | 3–32V | 35V | 4A | High-current boost applications |
Compatible With / Common Use Cases
- Li-ion battery to USB 5V: Boost 3.7V single cell to 5V for USB power bank or Arduino supply
- 2×AA to 5V: Boost 3V alkaline batteries to 5V for portable Arduino/ESP8266 projects
- Arduino to 12V LED supply: Boost 5V Arduino supply to 12V for LED strip power
- Solar panel boost: Step up low-voltage solar panel output (2–5V) to 5V for charging
- Adjustable lab supply: Quick adjustable voltage source for bench testing
Frequently Asked Questions
Q: How do I set the output voltage on the MT3608 module?
A: Connect input power and a voltmeter to the output. Turn the onboard potentiometer clockwise to increase voltage, counterclockwise to decrease. Set to your target voltage before connecting the load. Always verify output voltage before connecting sensitive components.
Q: What is the actual maximum output current of the MT3608 module?
A: The MT3608 IC has a 4A internal switch, but the onboard inductor and PCB traces limit practical output current. At 3.7V input / 5V output, expect ~1.2A continuous output. At higher boost ratios (e.g., 3.7V to 12V), maximum output current drops to ~400mA. Derate for thermal safety.
Q: Can I use MT3608 to charge a Li-ion battery?
A: No — MT3608 is a boost converter, not a battery charger. It cannot regulate charging current or implement CC/CV charging profiles. For Li-ion charging, use a dedicated charger IC (TP4056, MCP73831) or a charging module.
Package Contents
- 3× MT3608 DC-DC Step-Up Boost Converter Module
