MT3608 Power Supply Module for Arduino

Key Specifications:

• Input Voltage: 2V to 24V DC.
• Output Voltage: 5V to 28V DC (Adjustable via potentiometer).
• Maximum Output Current: 2A (peak).
• Efficiency: >93% (up to 97% in some conditions).
• Switching Frequency: 1.2 MHz.
• Internal Switch Limit: 4A.
• Dimensions (approx.): 36mm x 17mm x 14mm.

How it Works:

1. Input: Connect your low-voltage battery (like a 3.7V Li-ion) or power source to IN+ (positive) and IN- (negative).
2. Adjust: Use a multimeter to measure the output while turning the small blue trimmer (potentiometer) to set your desired voltage (e.g., 5V, 9V, 12V).
3. Output: Connect OUT+ and OUT- to your Arduino or device, ensuring the output voltage matches the device’s requirements (e.g., Arduino Uno needs 5V).

Best Practices:

• Heat: For output currents over 1A, use a heatsink for better heat dissipation.
• Calibration: Always set the output voltage with a multimeter before connecting to sensitive components like an Arduino.

Safety: Don’t exceed the max input voltage (24V) or output current (2A) for sustained high power.