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.

A small DC - DC boost module that converts a 0.9..5V power source to standard 5V, making it capable of supplying power to an Arduino microcontroller and other small electronic devices that use a 5v input. It integrates a PFM DC-DC boost control chip. FIT0471

DC-DC Step-up converter module based on the U3V70F5 system. Input voltage 2.9 ... 5V, output voltage 5V, maximum current 10A. Two mounting holes. Polol 2891

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

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

The compact (0.4″ × 0.5″) D24V5F12 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 12 V while allowing for a maximum output current of 500 mA.

The compact (0.4″ × 0.5″) D24V5F6 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 6 V while allowing for a maximum output current of 500 mA. Pololu 2844

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 15 V and a maximum input of up to 2 A. Pololu 4946

This small synchronous switching step-down (or buck) regulator takes an input voltage from 4 V to 36 V and efficiently reduces it to 3.3 V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.6 A and features reverse voltage protection.

A handy way to power 12V powered devices with a center-positive 2.1mm DC barrel jack from a USB port. Adafruit 2778

Step-Up/Step-Down converter with an output voltage of 5 V, an input voltage from 3 to 15 V and a maximum current of up to 600 mA

A power supply based on a DC-DC converter with a current capacity of up to 5.1 A. The input voltage can range from 5 V to 30 V, while the output voltage is adjustable from 0 V to 36 V. It has built-in WiFi communication. XY3605

Step-Down DC-DC converter module based on the D24V150F9 chip. Input voltage 11 ... 40V, output voltage 9V (max 15A). Pololu 2884

BMS system for three Li-Ion cells with a voltage of 12 V. It has the function of charging with balancer, discharging and over-discharge protection. The cells can be charged with continuous current up to 60 A and discharged with current up to 80 A

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 D36V28F12 with an output voltage of 12 V, an input voltage from 12.9 to 50 V and a maximum output current of 3.3 A. Pololu 3786

Step-Down converter D36V28F9 with an output voltage of 9 V, an input voltage from 9.8 to 50 V and a maximum output current of 3.4 A. Pololu 3785

Step-Down Voltage Regulator D24V25F5. Pololu 2850

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors.

A power supply based on a DC-DC converter with a current capacity of up to 5.1 A. The input voltage can range from 5 V to 30 V, while the output voltage is adjustable from 0 V to 36 V. XY3605