Step-Down DC-DC converter module based on the D36V6F5 chip. Input voltage 5.2..50V, output voltage 5V (max. 600mA). Pololu 3792

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 3.3 V and a maximum input of up to 2 A. Pololu 4940

Power multiplexer based on Texas Instruments TPS2113A. It enables smooth switching between two power sources from 2.8 V to 5.5 V. Pololu 2596

Step-Down converter D36V50F5 with an output voltage of 5 V, an input voltage from 5.5 to 50 V and a maximum output current of 8 A. Pololu 4091

DC-DC Step-Up converter U3V40F5 with an output voltage of 5 V, an input voltage of 1.3 to 5 V and a maximum output current of 4 A. Pololu 4012

Step-Down converter D36V28F5 with an output voltage of 5 V, an input voltage from 5.3 to 50 V and a maximum output current of 4 A. Pololu 3782

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 3.8 A. It has built-in reverse polarity, overload and short circuit protection, and the spread spectrum function reduces EMI interference. Pololu 4853

Efficient step-down converter that reduces the input voltage from up to 45 V to a regulated output voltage range from 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.8 A. It has built-in protection against reverse polarity, overload and short circuit, and the spread spectrum function reduces EMI interference. The module is equipped with an additional potentiometer for adjusting the cut-off voltage. Pololu 4852

Step-down voltage regulator module based on the APM81815 providing a fixed 5.35 V output at up to 1.1 A with an input voltage range of 5.4 - 72 V. Pololu 5268

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

DFRobot DFR0205 is a compact and efficient step-down DC-DC converter module with up to 25 W of power, allowing adjustment of the supply voltage to meet the needs of various electronic components. With a voltage regulation function, a quick 5 V selection switch, and an Ovout interface, it enables simultaneous power delivery to components with different voltage requirements. Ideal for prototyping, mobile projects, automation systems, and IoT applications.

Module based on the TPS2116 enabling automatic switching between two 1.6 - 5.5 V power sources with output through a USB Type-C connector, without USB priority, supporting up to 2.5 A continuous current and reverse current blocking. By default, it selects the higher input voltage with the option to switch between VIN1 and VIN2 by control signal. Pololu 3729

The compact (0.4″ × 0.5″) D24V5F1 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 1.8 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 75% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu 2830

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36V and efficiently reduces it to 5V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.5A and features reverse voltage protection. Pololu 2858

An efficient step-down converter that reduces the input voltage to 5 V at a maximum current of 100 mA, offering high efficiency due to low quiescent current (<20 μA). It supports input voltages from 5 V to 65 V, has short circuit and overheating protection, making it a reliable and energy-efficient solution. Pololu 5363

Safety system for two Li-Ion cells with 11.1V. The module has the function of charging cells with the balancer, discharging and the function of protecting the cells against discharge. Cells can be charged with continuous current up to 20A and discharged with current 40A. modBMS40A

Pololu 2833

High-performance step-down converter with a digital display for voltage and current monitoring. With CV/CC operation and up to 6 A output capability, it provides a versatile solution for laboratory, prototyping, and general electronic power applications. XYL3606S

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 6 V and a maximum input of up to 2 A. Pololu 4942