The RT8819A RT8819AGQW KA= Marking KA= IC | CPU Power Controller Controller IC is a high-performance IMVP8-compliant CPU power controller designed for Intel platform voltage regulation. It provides multi-phase synchronous buck control, delivering accurate and stable voltage for the CPU core and graphics rails.
With its integrated Serial VID (SVID) interface, the RT8819A supports dynamic voltage scaling and fast transient response to meet modern CPU load demands. It includes complete protection features such as Over-Voltage (OVP), Under-Voltage (UVP), Over-Current (OCP), and Under-Voltage Lockout (UVLO), ensuring system reliability and safety.
Packaged in a compact QFN form factor, the RT8819A is identified by marking code “KA=” (⚠️ also used by RT6226A; verify by circuit position). It is ideal for desktop motherboards, notebooks, and VRM modules requiring precise IMVP8-compatible CPU power control.