Hx8872-c | Datasheet
The HX8872-C is a high-performance Timing Controller (T-CON) and TFT-LCD Gate Driver IC manufactured primarily by Himax Technologies. It is a critical component in modern display systems, bridging the gap between video input signals and the physical LCD panel to manage image refresh, timing, and power efficiency. Key Technical Specifications
The HX8872-C is designed for high-definition (HD) applications and is commonly found in the electronics of TVs, tablets, and industrial monitors. Specification Package Type TQFP-64 or QFP-64 Supported Resolution Up to 1366 x 768 (HD) Interface (Input/Output) LVDS / mini-LVDS Supply Voltage (VDD) 2.3V to 3.6V (Typical 3.3V) Clock Frequency 25 MHz to 115 MHz Output Channels 240 Channels (Gate Driver functionality) Operating Temperature -20°C to +85°C Core Functionality & Features
Precision Timing Control: As a T-CON, it converts standard video signals (like LVDS) into the specific timing required for the LCD's source and gate drivers. Image Enhancement Technologies:
Over-drive Technology: Reduces motion blur in fast-moving video by accelerating liquid crystal response times.
Content Adaptive Brightness Control (CABC): Adjusts backlight levels based on the image content to save power without sacrificing visual quality. hx8872-c datasheet
Power Management: Includes a built-in shift register and level shifters to minimize external component count. It also features a low-power standby mode where current consumption drops to 1.0–2.0 μA.
High Integration: By combining gate driver and timing controller functions, it allows for more compact PCB designs in mobile and portable devices. Applications and Use Cases
The versatility and reliability of the HX8872-C make it a staple in various industries:
Consumer Electronics: Used in smartphones, tablets, digital cameras, and camcorders to manage high-speed data transmission and high-quality image processing. The HX8872-C is a high-performance Timing Controller (T-CON)
Automotive Displays: Integrated into navigation systems, dashboards, and car infotainment systems.
Industrial & Medical: Drives TFT-LCD panels in industrial control panels and medical diagnostic equipment where stable, flicker-free output is vital.
Television Maintenance: Frequently used as a replacement T-CON IC for upgrading or repairing HD LCD/LED TV panels. Implementation and Safety Guidelines
When designing with the HX8872-C, engineers should refer to the official Himax documentation for the most accurate pinout and electrical characteristics: Timing Controllers « Himax Technologies, Inc reducing component count and PCB space.
8. Common Problems and Debugging Tips
If you cannot find the official datasheet or your design fails, here are practical solutions:
5. Application Information and Typical Characteristics
The best datasheets provide more than numbers; they offer guidance. For the HX8872-C, one would expect:
- Typical Application Schematic: A complete circuit with recommended capacitor values, resistor dividers, and filtering.
- Layout Guidelines: Recommendations for PCB trace width, ground planes, and decoupling capacitor placement.
- Graphs: Output voltage vs. temperature, frequency response, or load regulation curves.
If these are missing, the engineer must treat the component as high-risk and plan extensive prototyping.
Pin functions (typical mapping)
- VCC — Positive power supply
- GND — Ground
- IN_A / IN_B — Channel A/B inputs (RF/IF input)
- OUT_A / OUT_B — Channel A/B outputs
- EN / SHDN — Enable / shutdown control pin (active high or low — check datasheet)
- FB / NC — Feedback or no-connect pins used in bias networks
- ISET — Current setting pin (if present) for quiescent bias
Verify actual pin names and order on the official package drawing.
Product Overview
The HX8872 is designed to drive a-TFT (Amorphous TFT) LCD panels. It integrates a timing controller (T-Con), source drivers, and power management circuits into a single chip solution, reducing component count and PCB space.