Inx In518 Ic Pinout Diagram: Top
The INX IN518 IC (also frequently listed as 1N518 or IN518) is a specialized integrated circuit primarily utilized as a DC-to-DC converter or Display Driver in LCD panels, such as those manufactured by Innolux. This high-performance chip is essential for managing signal timing, voltage level shifting, and pixel data routing within modern LCD display modules. Technical Overview
The IN518 is favored in consumer and industrial electronics for its compact design and efficient power handling.
Package Type: Typically available in a QFN-16 (Quad Flat No-leads) package, measuring approximately 4mm x 4mm with a 0.5mm pitch. Operating Voltage: Operates on a standard 3.3V supply.
Operating Temperature: Rated for industrial use between -40°C and +85°C.
Functionality: Acts as a critical Display Driver IC or DC-DC converter, often found in T-CON boards for LCD panels. IN518 Pinout Configuration (QFN-16)
While specific internal pin assignments can vary slightly by manufacturer, the standard top-view configuration for a QFN-16 LCD driver IC like the IN518 typically includes the following functional pins: Description Power (VCC/VDD)
Supplies the necessary 3.3V to power the internal logic and display circuitry. Ground (GND)
Common ground connection for the chip, often connected to the central thermal pad. Input Signals
Receives timing and data signals from the main controller or T-CON. Output Channels
Sends processed voltage levels to the LCD panel pixels for image rendering. Feedback/Control
Used for monitoring output stability and adjusting voltage levels (FB pins). Common Applications
The IN518's reliability makes it a "game-changer" for various display-dependent technologies:
Consumer Electronics: Handheld meters, digital clocks, and small-screen gadgets. Medical Equipment: Monitors and diagnostic display panels. inx in518 ic pinout diagram top
Industrial Automation: Control panels that require low-power, high-stability display drivers.
LCD Repair: Frequently replaced in Innolux panels when "No Display" or backlight issues occur. Troubleshooting and Repair
In repair scenarios, such as those documented by technicians on YouTube, the IN518 is a common culprit for screen failure.
Visual Inspection: Check for burn marks or cracked casing on the QFN package. Voltage Check: Verify that 3.3V is present at the VCC pins.
Continuity: Use a multimeter to ensure no short circuits exist between pins, especially the ground pad.
Replacement: If the display is black but the backlight is functional, replacing the IN518 often restores signal routing to the pixels.
For further procurement, you can find the IN518 IC through global distributors such as AliExpress, Worldway Electronics, and IndiaMART.
Are you currently troubleshooting a specific LCD panel model or looking for a circuit schematic for this IC?
INNOLUX Panel Backlight ok No display,,in518 DC to DC ic change
INNOLUX Panel Backlight ok No display,,in518 DC to DC ic change - YouTube. This content isn't available. YouTube·khub singh chauhan Electronic
The INX IN518 (also often identified as the IN518) is a multi-channel power management integrated circuit (PMIC) typically used in LCD TV control boards (T-CON) to generate the various supply voltages required for the display panel. Core Features
Integrated Power Management: It is designed to regulate and provide multiple voltage rails from a single input source. The INX IN518 IC (also frequently listed as
Voltage Generation: Typically generates essential panel voltages including: VCC/VDD: Logic supply (usually 3.3V).
VGH (Gate High): High positive voltage for switching TFT gates on.
VGL (Gate Low): Negative voltage for switching TFT gates off. AVDD: Analog supply for the source driver.
Protection Circuits: Includes standard safety features like Over-Current Protection (OCP), Over-Voltage Protection (OVP), and thermal shutdown to prevent damage during circuit faults.
Compact Footprint: Usually found in a Surface Mount Device (SMD) package to fit slim display modules. Pinout and Diagram Overview
While exact pin numbering can vary by package type (e.g., QFN or TQFP), the following pin functions are standard for this class of IC: Pin Function Description VIN
Main power input (commonly 12V or 5V depending on the board) LX / SW
Switching node connection to the external inductor for the boost converter VGH / VGL Output pins for gate drive voltages FB (Feedback)
Feedback pins for each regulator to maintain stable output voltage EN (Enable) Control signal to turn the IC functions on or off GND System ground connection AVDD High-precision analog voltage output for source drivers Application Usage
The IN518 is most commonly used in repair and maintenance of television T-CON boards. When a TV has sound but no picture, or a "white screen" effect, technician's often check the output voltages of the IN518 to ensure the display panel is receiving its necessary power.
For a visual reference, you can find a downloadable pinout and wiring guide at Scribd's Inx In518 Pinout Document. Inx In518 Ic Pinout Diagram TOP | PDF - Scribd
The INX IN518 (also identified as IN518) is a 6-pin Power Management IC, commonly found in LED TV and monitor control boards. It often functions as a PWM controller or DC-DC converter. INX IN518 IC – Top View Pinout Diagram
The specific "pinout diagram top" you are searching for is documented in specialized service manuals and hardware repair guides. INX IN518 Pinout (Top View)
While specific pin functions can vary slightly by application (e.g., as a LED driver or buck converter), a typical 6-pin power IC configuration for this series includes: Pin 1: GND — System ground.
Pin 2: GATE / OUT — Output drive for the external MOSFET or internal power switch. Pin 3: VCC / VIN — Power supply input for the IC.
Pin 4: FB (Feedback) — Voltage feedback to regulate output.
Pin 5: CS (Current Sense) — Detects overcurrent or sets peak current.
Pin 6: EN / COMP — Enable pin or error amplifier compensation. Available Documents & Downloads
Detailed diagrams and schematic integration can be found at the following sources:
Technical Diagram: A dedicated 2-page pinout diagram for the INX IN518 is available for viewing and download on Scribd - INX IN518 IC Pinout.
Repair Guide Context: This IC is also referenced in guides for Identifying 6-Pin SMD Power ICs which provides visual comparisons for similar components used in LED TV boards.
Circuit Reference: It appears in broader schematic collections like the Electrical Components Datasheet Overview often used by technicians for inverter and power board repairs. Inx In518 Ic Pinout Diagram TOP | PDF - Scribd
INX IN518 IC – Top View Pinout Diagram
Orientation: Pins are numbered counter-clockwise from the index mark (dot or notch at top).
┌──────────────────────────────────┐
│ INX │
│ IN518 │
│ ○ ┌───┐ │
40 │ │ │ 21 │
┌─────┤ │ ├─────┐ │
│ │ │ │ │ │
│ └───┴───┘ │ │
│ │ │
39│ │22 │
┌─────┐ ┌─────┐ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
└─────┘ └─────┘ │
30│ 31│ │
│ │ │
│ ┌───────────┐ │ │
│ │ │ │ │
└─────┤ IN518 ├───┘ │
│ │ │
└───────────┘ │
│
Bottom View (pads underneath) │
└─────────────────────────────────────┘
Scenario B: Reverse Installation (Backward)
- Connection: Cathode to Signal Source, Anode to Load.
- Result: The diode acts as an open switch. It blocks the current.
- Protection Role: In some circuits, diodes are installed backward intentionally (Cathode to +V, Anode to Ground) across inductive loads (like relays) to act as Flyback Diodes. When the inductive load collapses, it creates a negative voltage spike; the backward-installed diode suddenly conducts this spike away, protecting the driving transistor.
7. Troubleshooting from Pinout Topology
| Symptom | Check top-view pins | |-----------------------------|----------------------------------------| | No I2C ACK | Pin 3 (RESET_N) high, Pin 5/6 pull-ups | | No touch detection | Pin 36 (CAP_INT) voltage ~1.8V? | | Random interrupts | Decoupling on Pin 1 & Pin 33 | | All coordinates zero | Pin 7 (TEST) = GND, not VDD |