If you are repairing a device and find that the is suspected to be faulty, consider the following:
: Counting progresses counter-clockwise around the perimeter of the package starting from the Pin 1 marker, down the left side, across the bottom, up the right edge, and closing along the upper margin.
If you need the (e.g., IN518A, IN518B) or a different package (QFN, BGA), please provide the full part marking and package type.
Understanding the is essential for technicians working on LCD panel repairs, particularly for Innolux panels. This specialized component is primarily a DC-to-DC converter or power management IC (PMIC) designed to generate the various voltages required for an LCD screen to function. Key Identification & Package inx in518 ic pinout diagram top
Below is the pin mapping (pins numbered counter-clockwise from index mark on top left).
When troubleshooting or designing with the INX IN518, locating "Pin 1" from the top view is critical to avoid reverse-polarity destruction during component replacement.
High-level gate drive voltage, often around 20V-30V. If you are repairing a device and find
TOP VIEW (Pins facing down, IC mark at top-left corner) ┌─────────────────────────────────────────────────────────────────┐ │ ●───┐ │ │ │ 1 │ 48 47 46 45 44 43 42 41 40 39 38 37 │ │ └───┘ │ │ 2 36 │ │ 3 35 │ │ 4 34 │ │ 5 IN518 33 │ │ 6 Top 32 │ │ 7 View 31 │ │ 8 30 │ │ 9 29 │ │ 10 28 │ │ 11 27 │ │ 12 26 │ │ 13 25 │ │ 14 15 16 17 18 19 20 21 22 23 24 │ └─────────────────────────────────────────────────────────────────┘
Understanding the is essential for troubleshooting or designing a board. In a typical 8-pin package, the top view (looking down on the component with the indentation/dot on the top-left) is configured as follows: TOP VIEW (SOIC-8/Similar) 1 o 8 2 7 3 6 4 5 Use code with caution. Detailed Pin Functionality Pin 1 (GND/Reference): Ground reference or feedback pin.
┌───┐ EN 1 -│ │- 6 OUT GND 2 -│ │- 5 NC (or FB) IN 3 -│ │- 4 BYPASS └───┘ Top Marking (e.g., IN518) This specialized component is primarily a DC-to-DC converter
The IN518 is a "game-changer" for LCD repair due to its stability and reliability in legacy and modern devices.
: This IC is also referenced in guides for Identifying 6-Pin SMD Power ICs which provides visual comparisons for similar components used in LED TV boards.
A completely white or black screen typically points to a failure in the VGHcap V sub cap G cap H end-sub VGLcap V sub cap G cap L end-sub