Only need a resistor, 0.2V voltage drop current constant IC XZ1030

Model No. : XZ1030
Brand Name : XA

CNY ¥ 0.55

LED Bar current constant driver CN4215

Model No. : CN4215
Brand Name : CN

CNY ¥ 0.45

Current constant regulator CN4020

Model No. : CN4020
Brand Name : CALEN

CNY ¥ 0.35