BQ76PL455A-Q1 16-Cell Battery Monitor Texas Instruments BQ76PL455A-Q1 16-Cell Battery Monitor is a battery monitoring and protection device, designed for high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen BQ76PL455A-Q1 devices to communicate with a host. This is done via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface. The BQ76PL455A-Q1 monitors and detects several different fault conditions. These fault conditions include overvoltage, under voltage, over temperature, and communication faults. Six GPIO ports, as well as eight analog AUX ADC inputs, are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection. The BQ76PL455A-Q1 device is AEC-Q100 qualified for automotive applications.