Receives timing and data signals from the main controller or T-CON.
| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | EN pin floating or low | Pull EN to VIN via a 100k resistor | | Output voltage is low (e.g., 1.2V) | Output shorted or overcurrent | Check load resistance; measure OUT to GND | | Output is noisy/oscillating | Missing bypass cap on pin 4 | Add 10nF – 100nF from pin 4 to GND | | IC overheats | Excessive dropout voltage or load | Reduce VIN - VOUT differential; add heatsink | | Wrong output voltage | Misidentified top marking | Measure with DMM; compare to expected suffix |
It is highly likely you are looking for the or a similar 8-pin surface mount component. inx in518 ic pinout diagram top
The is a highly specialized, multi-channel DC-to-DC power management and gamma reference integrated circuit primarily utilized on T-CON (Timing Controller) boards in LCD and LED television display panels . Manufactured for high-density panel applications (such as 24-inch to 50-inch displays produced by brands like Innolux/INX), the IN518 acts as the central power hub. It generates critical internal voltage rails ( VGHcap V sub cap G cap H end-sub VGLcap V sub cap G cap L end-sub AVDDcap A cap V sub cap D cap D end-sub VGHPcap V sub cap G cap H cap P end-sub
Depending on the specific variant of the IN518 architecture, this pin either directly drives the low-side string of LEDs or provides a gate drive signal to an external N-channel MOSFET in higher-power applications. Typical Application Circuit Layout Receives timing and data signals from the main
Integrates step-up converters (Boost), step-down regulators (Buck), charge pump controllers, and a Gamma buffer array. INX IN518 Pinout Diagram Configuration (Top View)
If the part is an (likely a MOSFET Driver or Gate Driver), it typically comes in a small surface-mount package. Identifying the "Top" view is critical for correct installation. INX IN518 Pinout Diagram Configuration (Top View) If
Sends processed voltage levels to the LCD panel pixels for image rendering.
As display technology evolves towards 4K, 8K, and OLED, the architecture of T-Con boards is shifting. However, for the vast install base of 1080p and 4K LCD TVs manufactured between 2018 and 2025, the IN518 will remain a crucial component. It represents a generation of highly integrated, cost-effective PMICs that simplified board design while centralizing the points of failure.