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The SC89133 is a highly integrated switch-mode buck charger for 1-3 cells Li-ion battery applications. It supports 4-24V input, up to 4A charging current and provide battery charge management functions including trickle charge, constant current charge, constant voltage charge, charge termination, auto recharge and charging status indication. SC89133 also integrates NMOS driver and PMOS driver for PowerPath management, it is easy to support dynamic power management for charging and system power. The SC89133 supports flexible charge current and input current option, and the user can program the current freely through external resistor for different applications. The SC89133 supports input current limit, input over voltage and under voltage protections, internal cycle by cycle current limit, battery short circuit protection, and battery over voltage protection. It also offers charging safety timer and battery temperature protection to ensure safety under different abnormal conditions. Besides, SC89133 keeps monitoring IC temperature and automatically decreases charging current to ensure IC working in normal temperature range. The SC89133 is available in QFN-3.5*5.5 package.