BQ771604DPJR

The BQ771604DPJR from Texas Instruments is a battery protection IC designed for 2, 3, and 4-series Li-Ion battery pack systems. It independently monitors each cell for overvoltage conditions, providing protection with high accuracy of ±10 mV. An external capacitor programs the delay timer for the overvoltage protection response.

This device features low power consumption, with quiescent current typically around 1 µA when below the protection voltage. It also exhibits low leakage current per cell input, less than 100 nA. The BQ771604DPJR is housed in a compact 8-pin WSON package measuring 3.00 mm x 4.00 mm, suitable for space-constrained applications. It operates within a temperature range of -40°C to 85°C.

For production-line testing, a Customer Test Mode is available with a reduced delay time. The external delay timer feature can also detect open or shorted delay capacitors, triggering the output driver in an overvoltage condition. The IC supports surface mount installation.

Key specifications include support for 2 to 4 series cells, Lithium Ion battery chemistry, and overvoltage fault protection. The operating temperature range is -40°C to 110°C according to database information, and -40°C to 85°C from manufacturer data.