What this battery controller does for your BMS
The Texas Instruments BQ76PL455ATPFCTQ1 is a multi-function battery monitor and protector for lithium-ion stacks, handling 6 to 16 series cells through a single UART interface. It sits in the Automotive, AEC-Q100, Functional Safety (FuSa) series, so the qualification baseline includes the reliability screening and safety-process documentation expected for production battery-management systems in hybrid/electric vehicles, industrial energy storage, and heavy equipment. On-chip over/under-voltage fault protection means the controller can trigger a fault flag and alert the host without waiting for the next measurement cycle — useful for catching a cell that drifts outside the programmed window during charge or discharge. The operating temperature range of -40°C to 105°C covers under-hood automotive and outdoor industrial enclosures; the 80-TQFP (12x12 mm) package is a standard surface-mount footprint for mixed-signal controllers.
Cell-count flexibility and UART interface
Supporting 6 to 16 cells in a single device lets the BQ76PL455ATPFCTQ1 adapt to different battery-pack voltages without changing the controller IC. The UART interface keeps the communication wiring simple: a single serial line to the host MCU.
Lifecycle and sourcing posture
Listed as Active, so there is no last-time-buy clock running on this part. It remains a current-production choice for new BMS designs.