Detailed diagrams and schematic integration can be found at the following sources:
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: Reference start point for pin numbering.
The INX IN518 is frequently utilized as a robust alternative or functional replacement for legacy backlight and power management ICs such as the , TPS65130 , or APW8713 . When attempting bench diagnostics or executing structural repairs on an LCD board assembly, follow these best-practice guidelines:
Internal amplifiers provide a highly stable reference voltage crucial for controlling the reference bias of the liquid crystal pixels. 3. Reference Voltage Matrix inx in518 ic pinout diagram top
— Voltage feedback to regulate output.
IC enable pin; high enables the device, low puts it in shutdown mode. Pin 4 (GND): Ground reference for the entire IC. Pin 5 (GND): Ground reference (often tied with pin 4). Pin 6 (SW/OUT): Switching output or power output node.
If the above diagrams do not match your component, consider these possibilities:
Variants include T01, T02, T03, and NT02, which represent specific hardware revisions or performance improvements. Troubleshooting Insights Short Circuit Faults: Detailed diagrams and schematic integration can be found
When disabled, it draws minimal power, making it excellent for battery-operated devices.
While a full 40-pin table is often proprietary, technical analysis and live data sheets identify these critical functional pins and zones: Input Power (VCC/VIN): 12V DC input from the main board. AVDD Switching Pin:
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.
Understanding the pinout configuration of this IC is essential for engineers, hobbyists, and repair technicians looking to integrate it into custom circuit boards or diagnose faulty electronic devices. INX IN518 Pinout Diagram (Top View) Can’t copy the link right now
Connected to an external AVDD coil; it handles the internal switching to generate the primary boost voltage. High Voltage Outputs (AVDD/H-AVDD): Generates output voltages (often around ) required for driving the LCD panel. Gate Drive Output:
Use a multimeter to ensure no short circuits exist between pins, especially the ground pad.
The INX IN518 is not always listed on major distributor websites (Mouser, DigiKey) under "INX". To find the official datasheet:
: Analog supply voltage used for display panel gamma and grayscale voltages. Technical Specifications
Samples voltage or current lines to adjust internal regulation dynamically. Logic Input