BQ296216DSGR

The BQ296216DSGR from Texas Instruments is a high-accuracy, low-power overvoltage protection IC suitable for 2-series, 3-series, and 4-series cell Li-ion battery applications. It individually monitors each cell for overvoltage conditions and initiates a fixed internal delay timer upon detection. Once the timer expires, an output pin is triggered to indicate the overvoltage event.

This device features factory-programmed overvoltage thresholds ranging from 3.85V to 4.6V with a high accuracy of ±10mV. It also provides a regulated supply output option of 3.3V, 3.15V, or 3.0V, capable of delivering up to 2mA maximum output current. The IC boasts very low power consumption, with a typical current draw of approximately 4µA when cells are below the protection threshold and as low as 1.2µA with the regulated output disabled.

The BQ296216DSGR is housed in a compact 8-pin WSON package measuring 2mm x 2mm, making it ideal for space-constrained designs. It is designed for surface mount applications and operates within a temperature range of -40°C to 110°C.

Key specifications include overvoltage protection for 2-4 cell configurations, selectable delay timers, and low cell input leakage current of less than 100nA. This IC is a reliable solution for safeguarding Li-ion battery packs against overvoltage conditions.