While specific pin assignments can vary slightly by manufacturer implementation, a standard QFN-16 pinout diagram for this IC typically includes:

The Enable pin acts as a logic-level switch. Without a "High" signal here (usually above 2V), the IC will remain dormant, even if VIN is present. This is often controlled by the display controller's "Backlight On" signal.

The IN518 is a "backbone" component for display panel power distribution. You will most frequently encounter it in:

(T-CON boards), such as those from Innolux. Packaged in a compact 40-pin QFN