For the independent repair professional, mastering the IN518's pinout and power tree is a highly valuable skill, as it enables the reliable diagnosis of a common failure mode that would otherwise render a screen useless. While a full official datasheet remains elusive, the collaborative knowledge built from repair logs provides a robust roadmap for repair.
: A dedicated 2-page pinout diagram for the INX IN518 is available for viewing and download on Scribd - INX IN518 IC Pinout .
If you have a or the model number of the device , I can help you confirm the exact placement and check for compatible replacements.
Feedback/Compensation. This pin receives the feedback signal from the optocoupler to regulate the output voltage. inx in518 ic pinout diagram top
| Pin # | Name | Type | Description | |-------|-----------|-----------|----------------------------------------------| | 1 | VDD | Power | Core logic supply (typically 3.3V or 5V) | | 2 | GND | Ground | Digital ground | | 3 | R0 | Input | Red pixel data LSB | | 4-10 | R[1:7] | Input | Red pixel data MSBs | | 11 | GND | Ground | Digital ground | | 12-19 | G[0:7] | Input | Green pixel data | | 20 | VDD | Power | I/O supply | | 21 | B0 | Input | Blue pixel data LSB | | 22-29 | B[1:7] | Input | Blue pixel data MSBs | | 30 | CLK | Input | Pixel clock input | | 31 | HSYNC | Input | Horizontal sync | | 32 | VSYNC | Input | Vertical sync | | 33 | DE | Input | Data enable | | 34 | POL | Output | Polarity inversion signal (to column driver) | | 35 | STH/STV | Output | Start pulse (horizontal or vertical) | | 36 | CPH1 | Output | Source driver clock phase 1 | | 37 | CPH2 | Output | Source driver clock phase 2 | | 38 | OE | Output | Output enable for source drivers | | 39 | VCOM | Output | Common electrode voltage reference | | 40 | GND | Ground | Analog ground |
If you are currently troubleshooting or designing a board with this chip, let me know:
Would you like a (top view with exact pad dimensions) or the I2C register map for this IN518 controller? If you have a or the model number
LCD monitor boards, power supplies, LED drivers, portable consumer electronics.
(also often marked simply as ) is a 6-pin SMD power management or DC-DC step-down converter IC, frequently used in the T-CON boards of LCD and LED televisions, such as those from Chi Mei Innolux (INX). Pinout Configuration (Top View)
: Common markings include versions such as T01, T02, T03, I01, I02, and NT03. Pinout Configuration (Top View) | Pin # | Name | Type |
Check for burn marks or cracked casing on the QFN package. Voltage Check: Verify that 3.3V is present at the VCC pins.
Ensuring the voltage-to-transmittance curve of the LCD pixel is accurate.
INNOLUX Panel Backlight ok No display,,in518 DC to DC ic change