From Makers Electronics's description

MT3608 DC-DC Boost Step up Converter 2A MT3608 DC-DC Boost Step up Converter 2A is a small sized highly efficient and low cost module is built for converting or boosting the voltage as low as 2V to max 28V DC with the maximum output current of 2 ampere. The output voltage can be adjusted with the variable resistor used in the module. The module is using very little amount of components and the main component of the module is MT3608 IC. It is a highly efficient voltage booster IC with many built in features like over heat protection, low quiescent current, soft start function, low external components, overheat shutdown etc. Other components used in this module are two ceramic capacitors, one variable resistor, one resistor and one schottky diod and a 22uH inductor which is an important part of all voltage booster circuits. Features Over heat protection Small size Up to 2 Ampere output current Input voltage can be from 2V DC to 24V DC The module can deliver 93% output accuracy Output voltage is adjustable from 5V DC to 28V DC Soft start function Less quiescent current only 200uA max. Low cost Using MT3608 high efficiency chip Specifications: Input Voltage 2V – 24V DC Output Voltage 5V – 28V DC Output Current 2A (max), 1A (recommended), <100mA (input <4.0V), <50mA (input <3.5V) Module Type Non-isolated step-up (boost) Rectification Non-synchronous rectification Conversion Efficiency 96% (highest) Switching Frequency 1.2MHz Maximum Output Ripple 100mV (factory specification) Load Regulation ±0.5% Voltage Regulation ±0.5% Short Circuit Protection No Working Temperature -45°C to +85°C Dimensions PCB 37 x 17 mm Pin Configuration: Applications: Solar related circuits Portable of battery operated devices Power supplies Power Banks Battery chargers PACKAGE INCLUDES: 1x MT3608 DC-DC Boost Step up Converter 2A Datasheet: MT3608 Datasheet Example Arduino project

From Micro Ohm's description

DC-DC Boster MT3608 3V~28Vdc Adjustable Step-Up Converter Module 2A Type C USB The MT3608 2A Max DC-DC Step Up Power Module Booster Power Module is a low-cost module that can step-up a 2 to 24V input voltage up to a 5 to 28V output at up to 2A. DC-DC boost converters step up the input voltage to a higher voltage while also stepping down the available current since the module can’t output more power than its inputs. This boost converter is adjustable and capable of outputting a voltage in the range of 5.0 to 28V at a continuous current of up to 1.5A depending on input/output voltage settings with 1A available with most settings. Since it is a boost converter, the input voltage must be lower than the output voltage. The device is able to use low ESR bulk ceramic capacitors rather than electrolytic caps which avoids long-term aging concerns and contributes to the compact packaging. The MT3608 converter IC has over-current and thermal limiting features built-in to safely shut the device down if driven too hard. Voltage Adjustment: The module has a single-turn potentiometer for adjustment of the output voltage. Turning the pot CW decreases the output voltage while turning it CCW increases the output voltage. The upper limit of the adjustment range will depend on the input voltage and the load. With a 9V input for instance, at 1A, the upper voltage limit will be approximately 20V. Module Connections These are compact boards with 4 solder pads for making connections. VIN+ = Input Voltage VIN- = Ground VOUT+ = Output Voltage VOUT- = Ground. Connected to VIN- on the module. Pad dimensions: Note: The input voltage should not exceed the maximum input voltage. Peak current output current is not more than 2A for input & output. Please be noted that the output voltage should be higher than the input voltage . Features : It’s efficient by up to 93%. It can source a good amount of current. It is an inexpensive converter module. It’s simple to adjust to get your desired increase in voltage. Package Include : 1Piece MT3608 2A Max DC-DC Step Up Power Module Booster. Datasheet DOWNLOAD Input Voltage (V): 2 ~ 24 Max. Output Current (A) 2 Operating Temperature (°C) -40 to 90 Efficiency 93% Length (mm): 37 Width (mm): 17 Height (mm): 7 Weight (g): 4 Shipping Weight 0.005 kg Shipping Dimensions 5 × 4 × 3 cm

From Most Electronic's description

MT3608 DC-DC Boost Step up Converter 2A MT3608 DC-DC Boost Step up Converter 2A is a small sized highly efficient and low cost module is built for converting or boosting the voltage as low as 2V to max 28V DC with the maximum output current of 2 ampere. The output voltage can be adjusted with the variable resistor used in the module. The module is using very little amount of components and the main component of the module is MT3608 IC. It is a highly efficient voltage booster IC with many built in features like over heat protection, low quiescent current, soft start function, low external components, overheat shutdown etc. Other components used in this module are two ceramic capacitors, one variable resistor, one resistor and one schottky diod and a 22uH inductor which is an important part of all voltage booster circuits. Features Over heat protection Small size Up to 2 Ampere output current Input voltage can be from 2V DC to 24V DC The module can deliver 93% output accuracy Output voltage is adjustable from 5V DC to 28V DC Soft start function Less quiescent current only 200uA max. Low cost Using MT3608 high efficiency chip Specifications: Input Voltage 2V – 24V DC Output Voltage 5V – 28V DC Output Current 2A (max), 1A (recommended), <100mA (input <4.0V), <50mA (input <3.5V) Module Type Non-isolated step-up (boost) Rectification Non-synchronous rectification Conversion Efficiency 96% (highest) Switching Frequency 1.2MHz Maximum Output Ripple 100mV (factory specification) Load Regulation ±0.5% Voltage Regulation ±0.5% Short Circuit Protection No Working Temperature -45°C to +85°C Dimensions PCB 37 x 17 mm Pin Configuration: Applications: Solar related circuits Portable of battery operated devices Power supplies Power Banks Battery chargers