The BQ771817DPJR is a battery management family device manufactured by Texas Instruments. It is designed to protect 2-5S lithium-ion battery packs from overvoltage conditions. The device features an internal delay timer and is rated at 8 WSON. It can operate in a temperature range of -40 to 85 degrees Celsius. The device is designed to be robust and reliable by providing a wide range of protection features. It can detect, monitor, and control a variety of potential battery dangers, such as overvoltage, overcharge, and overcurrent. With its integrated analog-to-digital converter, it can monitor cell voltage, cell temperature, and total battery capacity. In addition, the device offers additional safeguards such as cell balancing and cell-level fault management. An alarm pin can be used to convey system warnings to the host system for more in-depth diagnosis and/or corrective action.