• Monitors and Balances 6-to-16 Cells per Device

• Highly Accurate Monitoring

• High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference

• All Cells Converted in 2.4 ms (Nominal)

• Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V

• Internal Precision Reference

• Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable VCELL Set Points

• Engineered for High System Robustness

• Up to 1-Mb/s Stackable Isolated Differential-UART

• Up to 16 ICs in Daisy-Chain With Twisted Pair

• Passes Bulk Current Injection (BCI) Test

• Designed for Robust Hot-Plug Performance

• Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q

The bq76PL455A device is an integrated 16-cell battery monitoring and protection device, designed for high-reliability, high-voltage industrial applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A devices to communicate with a host through a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface.

The bq76PL455A monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, 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 has features that customers may find useful to help them meet functional safety standard requirements. See Safety Manual for bq76PL455A-Q1 (SLUUB67).