Current Source/Constant Current SourceA current source is a type of power management integrated circuit (IC) that is designed to deliver a constant current to a load. Constant current sources are commonly used in a wide range of applications, including LED lighting, battery charging, and power supply design. Current sources are typically designed to operate over a specified range of input voltages and load resistances, and are available in a variety of package sizes and current ratings to meet the needs of different applications. They are known for their high accuracy and stability, and are commonly used in applications where a stable and consistent current is required.