5pcs PT4115 PT4115 89E SOT89 LED SOT 89 5 30 v / 1.2 A high profile LED constant current drive constant current chips|Integrated Circuits| - AliExpress
10PCS Original PT4115 PT4115B89E SOT-89 LED Driver 30V 1.2A High Dimming Ratio LED Constant Current Driver - AliExpress
PT4115 LED DRIVER Resources - EasyEDA
PT4115 High Brightness LED Driver: 30A, 1.2V Step-down Driver, Equivalent and Pinout