The TPS65167ARHAR is a highly integrated power management IC designed by Texas Instruments, specifically tailored for use in thin-film transistor (TFT) liquid-crystal display (LCD) panels. This versatile chip is an excellent choice for powering the various voltage rails required in small to medium-sized LCD panels, commonly found in notebook computers, monitors, and other portable devices where high-quality visual display is essential.

Key Features

• Multiple Output Voltages: The TPS65167ARHAR provides a range of output voltages, including a positive supply voltage for the source driver, a negative supply for the gate driver, multiple regulated voltages for the digital circuitry, and a boost converter for the white LED backlight.
• High Efficiency: With an integrated boost converter that operates in pulse-width modulation (PWM) mode, the device ensures high power efficiency, which is crucial for battery-powered applications.
• Adjustable Sequencing: The power-up and power-down sequences are programmable via an I2C interface, allowing for precise control and flexibility in various display applications.
• Protection Features: The TPS65167ARHAR includes a host of protection features such as thermal shutdown, under-voltage lockout (UVLO), and over-voltage protection, ensuring reliable operation under diverse conditions.

Applications

The versatility and comprehensive feature set of the TPS65167ARHAR make it an ideal choice for powering TFT LCD panels in a broad range of applications. These include:

• Notebook computers
• Portable monitors
• Portable media players
• Other battery-operated devices requiring high-quality display

Technical Specifications

The TPS65167ARHAR operates over a wide input voltage range and offers a compact solution with its 40-pin QFN package. It also features a switching frequency of 1.6 MHz, which allows the use of small, low-profile inductors and capacitors, thereby reducing the overall solution size.

Conclusion

With its comprehensive integration, high efficiency, and programmable features, the TPS65167ARHAR from Texas Instruments stands as a robust power management solution for TFT LCD applications. Its ability to drive multiple voltage rails efficiently, coupled with its protective measures, makes it a reliable and flexible choice for designers aiming to enhance the performance and longevity of their display products.