Constant current LED drivers are used for several reasons, and there are several benefits to using them over other types of LED drivers.

1. To avoid driving current exceeding the maximum rated value and affecting its reliability. One of the main reasons to use a constant current LED driver is for better control and consistency of the current flowing through the LED. LEDs are sensitive to changes in current, and using a constant current driver ensures that the LED operates within its optimal current range, leading to better performance and longer lifespan.

2. Obtain the expected brightness requirements and ensure the consistency of brightness and chromaticity of each LED. Use constant current LED drivers is for improved efficiency By maintaining a consistent current, the driver can more effectively regulate the power going to the LED, resulting in lower energy consumption and reduced heat generation This can be particularly important in applications where multiple LEDs are used, as it helps to ensure that each LED receives the appropriate amount of current without wasting energy

3. It can effectively prevent lightning strikes, grid surges, overcurrent, and overvoltage protection, making the LED lifespan longer. Constant current LED drivers also provide better protection for the LED. Fluctuations in current can damage LEDs, but a constant current driver helps to prevent this by keeping the current within safe limits. This can be particularly important in outdoor or industrial settings where the LED may be exposed to harsh environmental conditions.