The actual AW9523 IC comes in a QFN-24 or TSSOP-24 package:
While specific pin assignments can vary by exact manufacturer implementation (like Holtek), a typical HIGHWAY09A configuration focuses on regulation and protection: highway09a ic datasheet
While the internal logic operates at 5V, the LED power supply ($V_LED$) can technically differ if the IC is powered separately, though in most integrated strip designs, $V_DD$ and $V_LED$ share the same 5V rail. The actual AW9523 IC comes in a QFN-24