The BQ77PL900DL is a five to ten series cell Lithium-ion Battery Pack Protector. The integrated I²C communications interface allows the protector also to be as an analogue front end (AFE) for a Host controller. The BQ77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM. The battery pack protector can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode). The protector provides full safety protection for overvoltage, under-voltage, over-current in discharge and short-circuit in discharge conditions. No external components are needed to configure the protection features.
● PMOS FET Drive for charge and discharge FETs
● Pack protection control and recovery
● Individual cell monitoring
● Integrated cell balancing
● Fixed over-temperature protection
● I²C interface to host controller
● Analogue interface for host cell measurement and system charge/discharge current
● Host-controlled protection recovery
● Host-controlled cell balancing
● Green product and no Sb/Br
●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
