The MAX17121ETG+ from Maxim Integrated is a high-performance, multi-output power supply IC that is specifically designed to meet the demanding requirements of thin-film transistor (TFT) liquid crystal displays (LCDs) used in laptops, monitors, and TVs. This versatile power management integrated circuit (PMIC) provides a comprehensive solution for display applications, offering both high efficiency and precision control.

Key Features

• Multiple Outputs: The device includes a step-up controller for the source driver supply, a positive charge pump controller for the gate-on supply, and a negative charge pump controller for the gate-off supply.
• High-Efficiency Operation: The MAX17121ETG+ is designed for high-efficiency power conversion, which helps to reduce power consumption and extend battery life in portable applications.
• Integrated Fault Protection: The IC features comprehensive fault protection, including overvoltage, undervoltage, and thermal shutdown, ensuring reliable operation under various conditions.
• Adjustable Output: The output voltages are adjustable through external resistive dividers, allowing for precise tuning to meet specific application requirements.
• Compact Packaging: Housed in a 24-pin thin QFN (TQFN) package, the MAX17121ETG+ is designed for space-constrained applications.

Applications

The versatile nature of the MAX17121ETG+ makes it suitable for a wide range of display applications, including:

• Notebook Computers
• Desktop Monitors
• TVs

Technical Specifications

With an input voltage range of 2.5V to 5.5V, the MAX17121ETG+ efficiently generates the necessary supply voltages for TFT LCD panels. Its switching frequency is programmable up to 1MHz, allowing for the use of small, low-cost external components. The device also supports a soft-start feature to minimize inrush current during startup.

Conclusion

Overall, the MAX17121ETG+ from Maxim Integrated is a robust and versatile solution for powering TFT LCDs. Its combination of multiple outputs, high efficiency, and compact form factor make it an ideal choice for designers looking to optimize their power management strategy in display-centric applications.