Power-supply filter ICs are not a specific brand but a category of electronic components used to stabilize and clean power supply signals in various circuits. These ICs are produced by multiple global semiconductor companies, such as Texas Instruments (USA), Analog Devices (USA), STMicroelectronics (Switzerland), and Infineon Technologies (Germany). They serve industries like automotive, industrial automation, consumer electronics, and telecommunications, providing noise suppression, voltage regulation, and EMI filtering. Key products include active/passive filters, low-dropout regulators (LDOs), and switching regulators. Manufacturers like Murata (Japan) and TDK (Japan) also offer integrated power-filter solutions. For precise branding, distributors like Radwell or Grainger list specific part numbers from these suppliers.

Power-supply filter ICs