BQ25071DQCR

The BQ25071DQCR is a highly integrated battery charger IC from Texas Instruments, designed specifically for charging single-cell lithium-ion (Li-ion) and lithium-polymer (LiPo) batteries. This device is particularly suited for portable applications, such as smartphones, tablets, and other handheld devices, where efficient power management is crucial.

Key Features:

1. Input Voltage Range: The BQ25071 supports a wide input voltage range, typically from 4.5V to 20V, allowing it to be used with various power sources, including USB and wall adapters.

2. Charge Current: It can deliver a programmable charge current, which can be set to optimize charging speed while ensuring battery safety. The maximum charge current is typically around 2A, making it suitable for fast charging applications.

3. Battery Management: The IC includes advanced battery management features, such as temperature monitoring and over-voltage protection, to ensure safe and efficient charging. It also supports various charging profiles, including constant current/constant voltage (CC/CV) charging.

4. Thermal Regulation: The BQ25071 incorporates thermal regulation to prevent overheating during the charging process. This feature adjusts the charge current based on the temperature of the device, ensuring safe operation under varying conditions.

5. Integrated Power Path Management: This feature allows the device to manage power distribution between the battery and the load, enabling the system to operate while charging. This is particularly useful in applications where continuous operation is required.

6. Status Indicators: The IC provides status outputs that can be used to indicate the charging state (charging, done, fault) through LED indicators or other visual cues, enhancing user experience.

7. Small Package Size: The BQ25071 is available in a compact QFN package, which is ideal for space-constrained designs. This small footprint allows for easier integration into various PCB layouts.

8. Low Quiescent Current: The device features low quiescent current consumption, which is beneficial for battery-powered applications, helping to extend battery life when the device is in standby mode.

Applications:

• Smartphones and Tablets: Ideal for fast charging and efficient power management in portable consumer electronics.
• Wearable Devices: Suitable for compact designs where space and power efficiency are critical.
• Portable Medical Devices: Can be used in medical equipment that requires reliable battery charging and management.
• IoT Devices: Perfect for Internet of Things applications where battery life and charging efficiency are paramount.

Conclusion:

The BQ25071DQCR from Texas Instruments is a versatile and efficient battery charger IC that combines advanced features for safe and effective charging of lithium-based batteries. Its integration of power path management, thermal regulation, and a compact design makes it an excellent choice for a wide range of portable electronic applications.