MicroelectronicThe FM4057S42 with PMIC – Battery Management SOT23-6 RoHS is a integrated circuit (IC), manufactured by Fuman Microelectronic, which provides a complete battery management solution for single-cell lithium-ion batteries. This IC is suited for applications such as portable electronics, wearable devices and medical instrumentation. It helps to ensure safety, reliability and performance of single-cell lithium batteries by monitoring and controlling charging, discharging, protection, etc. The FM4057S42 includes protection features such as overvoltage, undervoltage, overcurrent and short circuit protection. Other features include voltage, current, temperature and capacity monitoring as well as status reporting via PMBus or I2C communication. This IC is RoHS compliant and comes in a small SOT23-6 package, providing an optimal solution for space-restricted portable electronics.