The S9V11F3S5C3 switching step-up/step-down regulator efficiently produces a fixed 3.3 V (default) or 5 V (selectable) output whether it is higher or lower than the input voltage, which can range from 3 V to 16 V. The regulator also has fixed 3.3 V low-voltage cutoff with hysteresis that can be used to prevent battery over-discharge.

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

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 3.4 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 4872

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

The protection circuit for one Li-Ion cell with a voltage of 3.2 V. It has the function of charging, discharging and over-discharge protection. The cells can be discharged with a continuous current of up to 12 A

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.

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

Step-Down XL4005 converter module with adjustable output voltage in the range from 0.8 to 30 V with a wide input voltage range from 4.5 to 30 V and a maximum output current of 5 A

Step-Up converter with an output voltage of 5 to 28 V, an input voltage of 2 to 24 V and a maximum current of 2 A

The BMS-3S-60A-INV board is designed for 3S lithium cell packs with a voltage of 12 V and a high current load. It is used in voltage converters and installations requiring reliable battery protection

DC-DC Step-Up converter U3V40F7 with an output voltage of 7.5 V, an input voltage of 1.3 to 7.5 V and a maximum output current of 4 A. Pololu 4014

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

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

Step-Down converter D36V28F7 with an output voltage of 7.5 V, an input voltage from 8 to 50 V and a maximum output current of 3.7 A. Pololu 3784

Shunt regulator with a fixed voltage of 26.4V, bypass resistance of 2.8 Ohms and a total of 32 SMT bypass resistors on both sides of the PCB with the possibility of adding an external potentiometer to adjust the preset voltage. Pololu 3775

Safety system for two Li-Ion cells with 7.4V. 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 5A. modBMS5A

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

The trigger module is designed for chargers PD 2.0 and PD 3.0. It is equipped with a USB type C input and an output in the form of pads. Allows powering devices with 12V. PDC004

The protection circuit for one Li-Ion cell with a voltage of 3.7 V. It has the function of charging, discharging and over-discharge protection. The cells can be discharged with a continuous current of up to 8 A