Overview: The MT3608 DC-DC Boost Converter Module is a compact, adjustable step-up power supply board designed to efficiently increase low input voltages to higher output levels, featuring a micro-USB input for convenient USB powering. Based on the MT3608 IC, this blue PCB module supports up to 2A output with adjustable voltage from 5V to 28V, making it ideal for boosting single-cell Li-ion batteries (3.7V) or other low-voltage sources to power devices like LEDs, microcontrollers, or portable gadgets. The design includes a blue electrolytic capacitor for stability and a trimmer potentiometer for precise output tuning.
Key Specifications:
Parameter
Value/Detail
IC Chip
MT3608 (Boost Converter)
Input Voltage Range
2V – 24V DC (via micro-USB or VIN pads)
Output Voltage Range
5V – 28V DC (adjustable via potentiometer)
Output Current
2A max (1A recommended for continuous use)
Output Power
Up to 15W max
Efficiency
Up to 93% (peak at mid-range loads)
Switching Frequency
1.2MHz (low ripple, compact inductor)
Dimensions
Approx. 36mm x 17mm x 6mm
Weight
~5g
Operating Temperature
-40°C to +85°C
Connections:
VIN+ / VIN-: Input pads for 2V-24V DC (or use micro-USB port for 5V USB input).
OUT+ / OUT-: Output pads or terminals for adjustable 5V-28V load connection.
Micro-USB: Standard Type-B port for 5V input from USB chargers or computers (data pins unused).
Adjustment: Blue trimmer potentiometer (turn clockwise to increase output voltage; use screwdriver).
Features and Benefits:
Wide Boost Range: Steps up from as low as 2V (e.g., single NiMH or Li-ion) to 28V, versatile for battery or solar applications.
USB Input Convenience: Micro-USB port allows easy powering from standard chargers without soldering.
High Efficiency: Low quiescent current and synchronous boost minimize energy loss; small 220µH inductor reduces size and noise.
Adjustable Precision: Onboard potentiometer enables fine voltage tuning (set with no load using a multimeter).
Compact and Durable: Blue PCB with SMD components and gold-plated pads for reliable soldering; includes Schottky diode for reverse protection.
Low Ripple Output: Provides stable DC for sensitive loads like audio circuits or sensors.
Applications:
Boosting 3.7V Li-Po batteries to 12V for motors or LEDs.
USB-powered adjustable supplies for Arduino/Raspberry Pi projects.
Portable device chargers or solar voltage stabilizers.
DIY electronics like LED drivers or fan controllers.
Field robotics and wearable power modules.
Note: Adjust output with no load connected to avoid damage; monitor for heat at high currents (add heatsink if >1A). Input must be at least 2V below desired output for efficient operation. Not suitable for high-precision or medical uses
