BQ76PL102RGTR

The BQ76PL102RGTR is a battery management integrated circuit from Texas Instruments designed for monitoring up to two individual Li-Ion cells. It incorporates advanced PowerPump balancing technology to equalize cells, enhancing battery run time and lifespan. This IC utilizes PowerLAN isolated communications technology for simultaneous measurement of all individual cell voltages in a series string.

Key electrical specifications include a low current consumption of less than 250 µA in active mode, less than 35 µA in standby, and less than 1 µA during undervoltage shutdown. It features an SMBus interface and fault protection for under voltage conditions. The device operates within a temperature range of -40°C to 85°C.

The BQ76PL102RGTR is housed in a compact 16-VQFN (3x3 mm) package suitable for surface mounting. It is designed as part of a complete low-cost solution for battery packs, particularly when used in conjunction with the bq78PL114. Applications include uninterruptible power supplies (UPS), portable medical and test equipment, and electric bike battery packs.

This IC connects directly to cells without requiring resistive dividers and includes an internal LDO regulator for support circuitry. Its millivolt measurement resolution is achieved using a Delta-Sigma A/D converter, and it features a self-calibrating time base, eliminating the need for an external crystal when paired with the bq78PL114.