The FM3773CS is a Power Management IC (PMIC) manufactured by Fuman, which is designed for battery management. This SOP-7-225-1.27 RoHS compliant IC is designed for integrating power management and sequencing functions for single-cell and multi-cell battery packs. It has an integrated power-on reset (POR) and a dual power-on reset (PWR) output. The FM3773CS features two chargers: a Li-Ion/Li-Polymer charge pump based charger and a linear charger. Both chargers support various charge regimes, including fast charge, top off charge, and trickle charge. Additionally, the FM3773CS has an adjustable current source for charging boost capacitors, and a boost regulator to support high current discharge in portable applications. Additionally, the FM3773CS offers protection against input overvoltage, input reverse polarity, and short-circuit detection.