Product Overview: Texas Instruments BQ26221PWR

The BQ26221PWR from Texas Instruments is a state-of-the-art battery charge management and system power path management device designed for single-cell Li-Ion and Li-polymer batteries in a wide range of portable applications. Its compact PowerPAD™ MSOP-10 package makes it an ideal choice for space-constrained applications.

Key Features

• High-Efficiency Charging: The BQ26221PWR offers a high-efficiency switch-mode charge management, which ensures fast battery charging while maintaining cool operation and high system efficiency.
• Power Path Management: The integrated power path management allows the system to be powered directly from the USB port or adapter while simultaneously charging the battery, ensuring uninterrupted operation of the device even when the battery is depleted.
• Flexible Power Source: It supports a wide range of input sources, including USB and high-voltage adapters, giving users flexibility in how they charge their devices.
• Protection Features: The device includes a multitude of safety features such as thermal regulation, input over-voltage protection, battery over-voltage protection, and a safety timer for overall system reliability.
• Programmable Settings: Various parameters such as charge current, termination current, and input current limit can be programmed via an I2C interface to accommodate different battery sizes and chemistries.

Applications

The BQ26221PWR is versatile and can be used in a multitude of portable applications, including:

• Smartphones and tablets
• Portable media players
• Wearable technology
• Portable medical devices
• And many other USB-chargeable consumer electronics

Technical Specifications

The device operates with an input voltage range from 3.9V to 17V and provides a charge voltage up to 4.4V with ±0.5% accuracy. The charge current is programmable up to 3A, making it suitable for a wide range of battery capacities.

Conclusion

The BQ26221PWR by Texas Instruments is a robust and flexible solution for modern portable electronics requiring efficient charging and effective power management. Its compact form factor, combined with its comprehensive feature set, ensures that it can meet the needs of the most demanding battery-powered applications.