Adapter with a voltage regulator 3.3V for NRF24L01

DC-DC Step-Up converter U3V40F9 with an output voltage of 9 V, an input voltage of 1.3 to 9 V and a maximum output current of 4 A. Pololu 4015

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

Step-Up converter module with adjustable output voltage in the range from 3 to 30 V with a wide input voltage range from 2 to 24 V and a maximum output current of 4 A. The board is equipped with a USB connector

The Step-Up converter module converts the voltage in the range of 3-35V to 5-40V with a power of 40-60W and an efficiency of over 90%. Works stably at temperatures from -40 to 85°C.

BMS protection circuit designed for 7 Li-Ion cells. It has a charging function with balancer option, a discharging function and an over-discharge protection function. HXYP-C47-MA18-7S

The Step-Down D24V6F3 Buck Voltage Regulator module gives the output voltage of 3.3V with a wide input voltage range of 4.8-42V and a maximum output current of 600 mA. Pololu 2106

High-power dual power supply module based on LT1083CP voltage regulators. It has an adjustable output voltage from 1.25 to 48 V DC and an output current of up to 10 A. It provides power for both channels in stereo audio amplifiers

Step-Down converter module with 3.4 V to 5.5 V input voltage, 3.3 V output voltage and 2 A output current. It is compatible with the popular LM1117-3.3V device in TO-220 package. Adafruit 4920

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V with an available output current of around 9 A.

Compact and efficient 5V 3A Step-Down converter module, ideal for voltage stabilization in demanding electronic projects

Step Down DC-DC converter module based on LM2596 circuit, input voltage 3-40V, regulated output voltage 1.5--35V

A switching converter that stabilizes a 15V voltage from an input range of 2.6V to 20V. It offers high efficiency of 70-95% and the ability to operate with a continuous input current of up to 900mA and a peak current limit of 2.2A. With a switching frequency of 1.6MHz and a power-saving mode, it is suitable for both high-performance and low-power applications. Pololu 5586

Breadboard power supply module, 5V, 3.3V, RoHS

The Step-Down D24V3F12 Buck Voltage Regulator module gives the output voltage of 12V with a wide input voltage range of 14.5-42V and a maximum output current of 300 mA. Pololu 2100

A step-down converter that reduces the input voltage from 9V to 60V to a stable 9V with up to 95% efficiency and 5A output current. It offers low standby current (<0.2mA), soft-start functionality, overcurrent, thermal, and reverse polarity protection. Compact and easy to integrate, it is ideal for microprocessor systems, IoT, and automation. Pololu 5576

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 4855