CXLE8618 It is a high efficiency, stable and reliable high brightness LED constant current drive control chip, with built-in high-precision comparator, fixed turn off time control circuit, constant current drive circuit, etc. it is especially suitable for constant current drive of high-power and multiple high brightness LED light strings. Cxle8618 adopts fixed turn off time peak current control mode, and its working frequency can reach up to 1MHz, which can make external inductance and filter The capacitance volume is reduced, the efficiency is improved, and the PCB area is saved. The minimum turn off time is 620ns, which can be adjusted by the external capacitance, and the working frequency can also be adjusted according to the user's requirements. Add PWM signal at en end to adjust the brightness of LED lamp. Cxle8618 sets the current flowing through the LED lamp by adjusting the resistance value of the external current detection resistor, so as to set the brightness of the LED lamp. The current flowing through the LED lamp can vary from tens of Ma to 2.5 a