Power module for Wemos D1 Mini

 Pololu 2831

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4854

An efficient step-down converter that reduces the input voltage to 12 V at a maximum current of 100 mA, offering high efficiency due to low quiescent current (<50 μA). It supports input voltage from 12 V to 65 V, has a Power Good (PGOOD) function, an EN input for system shutdown, and short circuit and overheat protection, making it a reliable and energy-efficient solution. Pololu 5377

Step-Up converter U3V70A with an output voltage from 4.5 to 20 V, an input voltage from 2.9 to VOUT and a maximum output current of 10 A. Pololu 2890

The Step-UpU1V11F3 Buck Voltage Regulator module with output voltage 3.3V, input voltage range of 0.5-5.5V and a maximum output current of 1.2A. Pololu 2561

The step-down converter module allows for voltage reduction from 8.4–60 V to a stable 8.4 V at currents up to 10 A. High efficiency of up to 95% and low power losses make it ideal for applications requiring high current and stable power. The device features built-in overcurrent, thermal, and reverse connection protection, as well as a soft-start function and a Power Good indication. Pololu 5675

5.0V Power Supply Module Board with Red Indicators, AMS1117-5.0V, RoHS

DC-DC Step-Up/Step-Down Converter Module. It has an input voltage of 1.4 to 16 V, an output voltage of 3.3 V and a maximum output current of 1 A to 1.5 A. Pololu 4964

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 6 V and a maximum output of 2.5 A to 3.5 A. Pololu 4981

The Step-Down D24V3F5 Buck Voltage Regulator module gives the output voltage of 5V with a wide input voltage range of 7-42V and a maximum output current of 300 mA. Pololu 2098

An efficient step-down converter that steps down the input voltage from as low as 45 V to a regulated output voltage range of 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.4 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4873

Pololu 5V Step-Up/Step-Down Voltage Regulator S18V20F5

The Step-UpU1V11A Buck Voltage Regulator module with adjustable output voltage 2-5.25V, input voltage range of 0.5-5.5V and a maximum output current of 1.2A. Pololu 2560

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 7.5 V and a maximum output of 2.5 A to 3.5 A. Pololu 4982

The S7V8F3 step-up/step-down converter regulates the voltage at 3.3 V, supporting an input voltage range of 2.7 V to 11.8 V, making it ideal for battery-powered applications. With an efficiency of over 90% and protection against short circuits and overheating, it provides reliable and energy-efficient operation in a wide range of conditions. Pololu 2122

The Step-Down converter module converts the input voltage of 5.3 - 26 V to a constant 3.3 V, with a maximum output current of 3 A, recommended up to 1.8 A for long-term operation. The conversion efficiency of the device is 96% and the module size is 22.3 x 17 x 4.2 mm