This datasheet introduces the bq769x0 family of battery‑monitoring ICs, describing their analog front‑end (AFE) features, digital I²C interface, integrated cell‑balancing FETs, and hardware protection functions such as over‑voltage, under‑voltage, over‑current, and short‑circuit detection. It also outlines typical application domains including light‑weight electric vehicles, power tools, UPS systems, and wireless base‑station backup.
The document provides detailed pin‑out diagrams for each package variant, electrical specifications (voltage ranges, current limits, ESD ratings), thermal metrics, and mechanical dimensions. A device comparison table lists the supported series‑cell counts, package sizes, and default I²C addresses for the three models. This manual is written in Chinese.
| Cell balancing current (per cell) | 70 mA (bq76920), 5 mA (bq76930/bq76940) |
|---|---|
| Maximum series cells (bq76940) | 15 cells |
The bq76940 can monitor up to 15 series‑connected cells.
The bq76930 is offered in a 30‑pin TSSOP package measuring 7.8 mm × 4.4 mm.