The LN2054Y42AMR is a Battery Management System (BMS) PMIC (Power Management Integrated Circuit) in a SOT-23-5L package, RoHS (Restriction of Hazardous Substances Directive) compliant, offered by NATLINEAR. The PMIC is a controller for 1 cell Li-Ion (Lithium Ion) rechargeable battery. Providing management of cell charging, discharge, monitoring and cell protection against overcurrent and overvoltage. The particularity of this device is the lack of the integrated FETs making it suitable for cost-sensitive, space-constrained applications. It features the Auto-activation of balanced charging, cycle-life extension, fast charge and high accuracy Vref output pin. The PMIC operates over temperature range from -40°C to 105°C and has low standby current of 500nA typical. The LN2054Y42AMR is ideal for applications in consumer electronics, industrial applications, automotive, and more.