BQ76PL536A

The BQ76PL536A from Texas Instruments is a versatile battery monitor and secondary protection IC specifically designed for industrial battery packs. It supports 3 to 6 series lithium-ion cells and is compatible with all chemistries. This device features hot-pluggable capability and a high-speed Serial Peripheral Interface (SPI) for efficient data communication.

Key electrical specifications include a supply voltage range from 6 V to 30 V (36 V peak), with low power consumption in sleep and idle modes. The integrated precision 5-V, 3-mA LDO provides stable output. It boasts a high-accuracy Analog-to-Digital Converter (ADC) with ±1 mV typical accuracy, 14-bit resolution, and a 6-µs conversion time, capable of measuring 6 cell voltages, one six-cell brick voltage, and two temperatures.

For protection, the BQ76PL536A includes built-in comparators for overvoltage and undervoltage conditions, as well as overtemperature protection, with programmable thresholds and delay times. It also provides cell balancing control outputs with a safety timeout. Configuration data is stored in Error Check/Correct (ECC)-One-Time-Programmable (OTP) registers.

The IC operates within an industrial temperature range of -40°C to 85°C. It is housed in a 64-lead HTQFP (PAP) package measuring 12 mm x 12 mm. The stackable vertical interface design simplifies integration, and isolation components are not required between devices.