The PJ4054 with PMIC - Battery Management SOT-23-5 RoHS is a battery management system component manufactured by Pingjingsemi. It is a SOT-23-5 (5 leads) surface mount device that is compliant with RoHS (Restriction of Hazardous Substances) environmental standards, which limits the use of hazardous materials in electronics. This part is designed to manage the charge and discharge of rechargeable batteries and to ensure their safe operation. It features over-voltage protection, over-current protection, short-circuit protection, temperature protection, charge and discharge control, and active-high safety timer. The PJ4054 offers a wide operating temperature range of -40 °C to 85 °C. It is suitable for small consumer electronic applications such as Bluetooth headsets, medical devices, mobile printers, and others.