Inx In518 Ic Pinout Diagram Top !!link!! Jun 2026

Depending on the specific circuit parameters (voltage/current), similar 6-pin converters like the AP34063 or certain SOT-23-6 regulators may serve as alternatives, though direct replacement is always recommended to match the exact switching frequency. Are you troubleshooting a specific TV model power issue like a missing VGL/VGH voltage? Identifying 6-Pin SMD Power ICs | PDF - Scribd

Here is a standard application circuit for the IN518 as a 3.3V LDO regulator.

Interpreting the physical layout of the QFN-40 package is crucial for manual inspection and multimeter probing. Below is a textual representation of the pinout as seen from the top (component side) with the orientation mark located at Pin 1. inx in518 ic pinout diagram top

One of the most confusing aspects for technicians is the chip's "top marking." The reported markings vary, leading to doubts about compatibility. Confirmed markings include:

To ensure proper circuit design, each pin must be connected according to its specific electrical function: Interpreting the physical layout of the QFN-40 package

When a technician turns on a TV, the IN518 orchestrates a specific sequence of power deliveries. Disruptions in this sequence lead to classic "no picture" or "grey screen" issues.

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 Confirmed markings include: To ensure proper circuit design,

The is a highly specialized, surface-mount display power management and timing controller chip widely deployed in modern LCD/LED television panels and monitor T-CON (Timing Controller) boards . Manufactured primarily for high-density display assemblies like Innolux panels, this integrated circuit is crucial for generating the fundamental supply rails—such as VGH, VGL, AVDD, and DVDD—required to actuate thin-film transistors (TFTs) across a display grid. Because it manages delicate high-frequency switching nodes right alongside highly sensitive signal lines, understanding its exact top-view pin configuration is essential for television repair technicians, hardware engineers, and display component developers alike.

Pins that receive standard low-voltage signals (e.g., 1.2V1.2 cap V 3.3V3.3 cap V ) from the primary T-CON processor.

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

If you are performing a repair, it is worth noting that the IN518 is often interchangeable with other 6-pin PWM controllers like the , LD7536 , or SG6848 , provided the pin configurations match your specific PCB layout.