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: Sub-blocks within the IC may be enabled/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.
● 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 abs max (up to 108 V)
● Simple I2C compatible interface (CRC option)
● Random cell connection tolerant
