bq76940
Description
The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ769x0 is designed with low power in mind: Subblocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.
Key Features
- AFE monitoring features - Pure digital interface - Internal ADC measures cell voltage, die temperature, and external thermistor - A separate, internal ADC measures pack current (coulomb counter) - Directly supports up to three thermistors (103AT)
- Hardware protection features - Overcurrent in Discharge (OCD) - Short Circuit in Discharge (SCD) - Overvoltage (OV) - Undervoltage (UV) - Secondary protector fault detection
- Additional features - Integrated cell balancing FETs - Charge, discharge low-side NCH FET drivers - Alert interrupt to host microcontroller - 2.5-V or 3.3-V output voltage regulator - No EEPROM programming necessary - High supply voltage absolute maximum (up to
