It is likely a manufacturer code or a house brand label. It does not affect the pinout or electrical function.
Based on its presumed LM358 equivalence:
If your circuit using Inx In518 is not working: Inx In518 Ic Pinout Diagram
Turn on the TV while keeping your multimeter probe firmly pressed onto the or AVDD test point. Watch the meter during the initial brief boot sequence:
The INX IN518 operates as a high-density, highly integrated subsystem packaged in a compact layout. Instead of spreading functions across multiple components, it combines power conversion and signal optimization into one silicon die: It is likely a manufacturer code or a house brand label
Are you seeing a (e.g., "JX518T", "YD518") other than just "IN518" on the chip?
While specific manufacturers can slightly adapt pinouts for proprietary package variants, the standard IN518 series utilizes an industry-standard 8-pin layout optimized for clear signal isolation and low noise. Watch the meter during the initial brief boot
The IN518 is typically found in an . Please note that pin configurations can vary slightly depending on the specific manufacturer (often branded as INX or Intersil variations). Always cross-reference with your specific chip marking.
The IN518 IC is widely available in a with 40 pins. This package is common for power management ICs due to its excellent thermal performance and compact footprint, which is critical for modern, space-constrained electronic devices.
If you can provide the package type (Black chip vs. Glass tube), I can refine the pinout diagram further.