Linear & low-dropout (LDO) regulators are not a specific brand but a category of voltage regulators widely used in electronics. These components are produced by various companies globally, including Texas Instruments (USA), Analog Devices (USA), STMicroelectronics (Switzerland), and Infineon Technologies (Germany). LDO regulators serve industries like consumer electronics, automotive, industrial automation, and telecommunications by providing stable voltage with minimal input-output differential. Key products include ICs like the LM1117 (TI) and ADP3338 (Analog Devices), offering efficient power management for applications such as mobile devices, IoT, and embedded systems.