The BQ76925PW is a host-controlled Analog Front End IC for 3-, 4-, 5-, or 6-series cell Li-ion and Li-polymer batteries. It allows a host controller to monitor individual cell voltages, pack current and temperature easily. The Host may use this information to determine unsafe or faulty operating conditions such as overvoltage, under- voltage, over temperature, overcurrent, cell imbalance, state of charge and state of health conditions. Cell input voltages are level-shifted, multiplexed, scaled and output for measurement by a Host ADC. A dedicated pin provides a low-drift calibrated reference voltage to enable accurate measurements. The voltage across an external-sense resistor is amplified and output to a Host ADC for both charge and discharge current measurements. Two gain settings enable operation with a variety of sense resistor values over a wide range of pack currents.
- Analog interface for host cell measurement
- Switchable thermistor bias output for host temperature measurements
- Overcurrent comparator with dynamically adjustable threshold
- Alerts host to potential overcurrent faults
- Wakes up host on load connect
- Integrated cell balancing FETs
- Individual host control
- 50mA Per cell balancing current
- Supports cell sense-line open wire detection
- Low power consumption
- Green product and no Sb/Br
电源管理, 车用, 便携式器材, 医用
