: High positive voltage for switching TFT gates on.
When disabled, it draws minimal power, making it excellent for battery-operated devices.
The switching nodes interface directly with external power inductors and Schottky diodes. Internal power MOSFETs cycle rapidly at high frequencies to pull current through the inductor, stepping up the input voltage to create high-voltage lines for LED strings or specific LCD bias grids ( VGHcap V sub cap G cap H end-sub VGLcap V sub cap G cap L end-sub 3. Control and Dimming Enable ( ENcap E cap N PWMcap P cap W cap M Enable ( ENcap E cap N inx in518 ic pinout diagram top
Obtain and follow the official INX IN518 datasheet and application notes for exact pin functions, electrical characteristics, package-specific pin numbering, recommended external components, and PCB layout diagrams. Do not rely on the generic mapping above for production.
_________________________________________________________________ / O (Pin 1 Indicator) \ | +-------------------------------------------------------------+ | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | | | | | | | | 40 16 | | | | | | L | | 39 INX IN518 17 | R e | | [Center Pad - GND] | i f | | 18 | g t | | 38 | h | | 19 | t | | 37 | | | | 20 | | | | 36 35 34 33 32 31 30 29 28 27 26 25 21 | | | +-------------------------------------------------------------+ | \_ _/ \_____________________________________________________________/ : High positive voltage for switching TFT gates on
These pins deliver raw operating voltage to the internal logic structures, error amplifiers, and gate drivers of the IC. For low-power mobile panels, this typically accepts a range. In desktop monitors or large TV panels (such as Innolux panel setups), the input line connects directly to a regulated 12V power rail . 2. Switching Regulators ( LXcap L cap X SWcap S cap W
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If your LCD has a blank screen after a power surge, the IN518 display driver may be damaged.
While an official datasheet is not publicly available from INX, field measurements and repair forum discussions have established a reliable set of operational parameters. The chip is powered by a 12V supply on the T-Con board and internally regulates and boosts voltages as follows: Internal power MOSFETs cycle rapidly at high frequencies
Beyond the DC-DC converter, the IN518 works in concert with other specialized ICs. On a typical T-Con board, you will frequently find the IN518 paired with:
: Frequently utilized as a focused DC-to-DC converter or subsystem driver. It manages the baseline voltage conversions (e.g., boosting a 5V or 12V mainboard input up to display-level potentials).