You know it’s a power management IC. You know it’s probably the reason Pin 1 of your main DC jack has 19V, but the BIOS chip is dead silent.
: Primarily interfaces via internal ribbon cables with the ILIF-473 V.A interface/scaler main board .
After repairing over 30 of these boards, here is the updated practical schematic—not a PDF, but a checklist.
A specialized multi-channel PWM controller regulates the backlight brightness via a Dimming (DIM) signal from the main logic board.
The ILPI-354 is typically structured as a high-efficiency power conversion board. The "VA" designation often refers to a specific version or adjustment in the voltage/amperage regulation stage.