BQ25170DSGR

The BQ25170DSGR is a highly integrated battery management IC from Texas Instruments, designed primarily for charging and power management applications in portable devices. This device is particularly suited for lithium-ion (Li-ion) and lithium-polymer (LiPo) batteries, making it ideal for smartphones, tablets, wearables, and other battery-operated devices.

Key Features:

1. Charging Capability: The BQ25170 supports a wide input voltage range, typically from 4.5V to 20V, allowing it to be powered from various sources, including USB and wall adapters. It features a programmable charge current, which can be adjusted to optimize charging speed while ensuring battery safety.

2. Integrated Power Path Management: This IC includes a power path management feature that allows for simultaneous charging and system operation. This means that while the battery is being charged, the device can still draw power from the charger, ensuring uninterrupted operation.

3. Battery Protection: The BQ25170 incorporates several safety features, including overvoltage protection, overcurrent protection, and thermal regulation. These features help to prevent damage to the battery and the device, enhancing overall reliability.

4. Low Quiescent Current: The device is designed to minimize power consumption when the system is in sleep mode, which is crucial for extending battery life in portable applications.

5. Flexible Configuration: The BQ25170 can be configured through external resistors to set the charge current and voltage levels, allowing designers to tailor the device to specific application requirements.

6. Thermal Management: The IC includes thermal regulation features that help manage the temperature of the battery during charging, ensuring safe operation and prolonging battery life.

7. Compact Package: The BQ25170DSGR is housed in a small, thermally efficient QFN (Quad Flat No-lead) package, which is suitable for space-constrained applications.

Applications:

• Smartphones and Tablets: Ideal for mobile devices that require efficient charging and power management.
• Wearable Devices: Suitable for smartwatches and fitness trackers that benefit from low power consumption and compact design.
• Portable Medical Devices: Can be used in medical equipment that requires reliable battery management and safety features.
• Consumer Electronics: Applicable in various consumer gadgets that utilize rechargeable batteries.

Conclusion:

The BQ25170DSGR from Texas Instruments is a versatile and efficient battery management solution that combines charging, power path management, and safety features in a compact package. Its flexibility and low power consumption make it an excellent choice for a wide range of portable applications, ensuring reliable performance and extended battery life.