The LTC4100EG#PBF is a battery management smart-battery charger with SMBus interface from Analog Devices. This charger is designed to efficiently recharge and condition smartphones, tablets, and other portable consumer electronics. It contains a highly integrated, ultra-low loss pulse density modulation (PDM) power supply with a built-in SMBus interface. This allows for intelligent control of parameters such as charge current and voltage, thus reducing system power dissipation. It also includes a programmable input voltage window of 4.2 V to 9 V. It features integrated power-on reset, which allows it to start up in a predefined configuration, minimizing system design complexity. Additionally, the charger is optimized to regulate a wide range of battery types and sizes, making it a cost-efficient solution for many portable consumer electronic applications.