These precise voltages are critical for the proper operation of the T-Con board and the LCD panel itself.
Understanding the is essential for troubleshooting or designing a board. In a typical 8-pin package, the top view (looking down on the component with the indentation/dot on the top-left) is configured as follows: TOP VIEW (SOIC-8/Similar) 1 o 8 2 7 3 6 4 5 Use code with caution. Detailed Pin Functionality Pin 1 (GND/Reference): Ground reference or feedback pin.
: High positive voltage for switching TFT gates on. inx in518 ic pinout diagram top
| Pin No. | Signal Name | Type | Description / Function | | :------ | :---------- | :------------ | :----------------------------------------------------------------------------------------------------------------- | | 1 | VCC / VIN | Power Input | Main power supply input; typically 12V from the mainboard. | | 2 | GND | Ground | Signal and power ground return path. | | 3 | EN / PWRON | Control Input | Enable pin; pulled high (3.3V) by the main processor to activate the DC-DC converter. | | 4-7 | LX1-LX4 | Switch Nodes | Switching node outputs for the internal boost/buck converters; connect to external inductors. | | 8-10 | BST1-BST3 | Bootstrap | Bootstrap pins for high-side gate drive; connect a small capacitor (typically 100nF) between LX and BST. | | 11 | FB1 | Feedback Input| Voltage feedback for output regulation (e.g., for the 3.3V rail). | | 12-15 | SW1-SW4 | Switch Outputs| Integrated power MOSFET switch outputs; similar function to LX pins. | | 16-18 | PGND1-3 | Power Ground | High-current ground return for the switching regulators; must be connected directly to the ground plane. | | 19 | VREF | Reference | Internal reference voltage; typically decoupled with a 100nF capacitor to ground. | | 20-25 | NC / GPIO | Not Connected | These pins are often unconnected (NC) or serve as general-purpose I/O for configuration in specific firmware. | | 26-30 | AGND | Analog Ground | Sensitive analog ground for internal control circuits; should be connected separately from PGND. | | 31-35 | SDA / SCL | I²C Interface | I²C bus pins for communication with the main timing controller (TCON) to report status and adjust outputs. | | 36-40 | VOUTx | Power Outputs | Various output voltage rails: AVDD (typically 17.9V), VGH (typically 30.4V), VGL (typically -7.5V). |
The INX IN518 is an integrated circuit commonly used in power management or logic control within electronic devices like laptops or monitors. Detailed technical reports specifically for the "IN518" are primarily found in specialized repair documentation and service manuals. IC Overview These precise voltages are critical for the proper
(6x6mm approximately) designed for space-constrained T-CON boards. Applications: Primarily used in Innolux (INX)
INNOLUX Panel Backlight ok No display,,in518 DC to DC ic change | Signal Name | Type | Description /
The IN518 integrates a high-voltage TX driver, low-noise RX amplifier, 12-bit ADC, and DSP for multi-touch detection.
: After soldering, perform a quick multi-meter continuity or diode-mode check from each surrounding board trace directly back to the top of the exposed lead side on the QFN to confirm clean electrical connectivity and check for shorts. If youg., T01, T03)?