MAX1771CSA+

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.

RT8064ZQW, Synchronous Step-Down Converter, WDFN-8

Synchronous buck converter, 1.2A, 1.5MHz, Vin max = 7V, RoHS

The ST1S09IPUR is a compact, synchronous buck regulator with a 2 A output current, designed for efficient power systems in mobile, industrial, and embedded applications. Integrated transistors and high switching frequency enable the design of miniature, low-noise converters with adjustable output voltage.

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

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

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

LM3668SD-4550/NOPB, 1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter, WSON-12

AM1S-0505SZ, DC-DC Converter, 1W, SIP-4

RT8289GSP, 5A, 32V, 500kHz Step-Down Converter, SOP-8