SLLU303A August 2019 – March 2022 TLIN1028-Q1 , TLIN1028S-Q1
LEDs D2 and D3 indicate when EN is high (D2), and when VCC is high (D3). These LEDs are only connected to their respective signals if the sliders on S1 are in the "on" position, as indicated on the S1 component.