The LTC4009IUF-2#PBF with PMIC – Battery Management QFN-20_4x4mm RoHS manufactured by Analog Devices is an integrated Power Management Integrated Circuit (PMIC) that combines several features designed to improve overall system performance and efficiency in battery operated applications. It contains a shunt regulator, multiple voltage/current monitoring, battery tracking, cell balancing, cell temperature regulation, and other system supervision functions. The LTC4009IUF-2#PBF is provided in a 20-pin, 4mm x 4mm QFN package which is RoHS compliant. The device is designed to directly monitor and manage up to four batteries interconnected in series for high voltage stacking applications and features an adjustable high voltage shunt regulator and wide input voltage range of 8V to 60V to provide flexible monitoring. The device integrates state-of-the-charge estimation and cell balancing algorithms for optimal battery status and performance. Additionally, the LTC4009IUF-2#PBF contains a wide range of safety features, low power consumption, and programmable power-on/off sequencing for fail-safe operation.