MT3608 DC-DC Step Up Boost Converter Module

The MT3608 DC-DC Step Up Boost Converter Module is a small, efficient and easy-to-use voltage booster for electronics projects that need a higher DC voltage from a lower DC source. Built around the popular MT3608 boost converter IC, this module can take an input supply from 2V to 24V and step it up to an adjustable output from 5V to 28V. It is widely used by makers, students, repair technicians and embedded developers for powering circuits from Li-ion cells, battery packs, solar panels and low-voltage adapters. This module works on a boost converter topology: the MT3608 switches an onboard inductor at high frequency, stores energy, and transfers it through a diode and output capacitor to create a higher output voltage. The output voltage is set using the onboard multi-turn potentiometer. Before connecting your load, power the module and adjust the trimpot with a screwdriver while measuring VOUT using a multimeter. The module is step-up only, so the input voltage must be lower than the required output voltage; it cannot reduce voltage like a buck converter. Typical applications include boosting a single 3.7V Li-ion cell to 5V for microcontroller projects, generating 9V or 12V rails for small sensors and modules, powering LEDs, DIY USB power supplies, portable instruments and low-power robotics. The rated maximum output current is up to 2A, but the usable current depends on input voltage, output voltage, cooling and load conditions, because higher voltage boost ratios require higher input current. Package includes one MT3608 adjustable DC-DC step up boost converter module. Pin connections are clearly marked: VIN+ and VIN- for DC input, and VOUT+ and VOUT- for boosted DC output. Always observe polarity and set the output voltage before connecting sensitive electronics.