LTC1983ES6-5TRPBF (SOT-6)

Step-UP converter (increasing the voltage), allows you to start with a load at a supply voltage of 0.7V, while the power consumption at rest is 5.5 uA. TPS61220

DC/DC converter control circuits, SO8, STM, RoHS

Step Down MP2144GJ pulse converter; 2,5-5,5V; 2A; 1,2MHz; TSOT23-8; Microchip, RoHS

STBB1-APUR, Buck-Boost DC-DC converter, allows to lower and increase voltage, DFN10, STMicroelectronics, RoHS

The XL4015E1 converter is a step-down (buck) circuit that converts an input voltage of 8-36V to a regulated output of 1.25-32V, with a maximum current of up to 5A. It is characterized by high efficiency (up to 96%) and protection against short circuit and overheating, although it does not have protection against reverse polarity of the power supply.

36 V 400 mA synchronous step-down switching regulator, VFDFPN10, STM, RoHS

The MC34063AD is a versatile switching voltage regulator that can operate as a step-up, step-down, and inverting converter, ideal for flexible power management in a variety of electronics projects. It supports input voltages up to 40 V and output currents up to 1.5 A, and offers additional overload protection, current limiting, and thermal shutdown features for increased reliability.

MCP16301T-I/CHY, High-Voltage Input Integrated Switch Step-Down Regulator, SOT-23-6

MCP16301HT-E/CH, Voltage Regulator DC-DC Step-Down 1A, SOT23-6