link to page 4 RP517x No.EA-519-190325 PIN DESCRIPTIONSTop ViewBottom View 3 3 2 2 1 1 A B C C B A RP517Z (WLCSP-8-P1) Pin ConfigurationTop ViewBottom View 5 4 10 9 8 7 6 6 7 8 9 10 (1) 1 2 3 5 4 3 2 1 1 1 2 3 4 5 RP517K [DFN(PLP)2527-10] Pin ConfigurationRP517H (SOT-89-5)Pin ConfigurationRP517Z (WLCSP-8-P1) Pin DescriptionsPin No.SymbolDescription A1 VIN Input Pin B1 VIN Input Pin C1 LX Switching Pin A2 VOUT Output Pin C2 GND Ground Pin A3 CE Chip Enable Pin (Active-high) B3 GND Ground Pin C3 GND Ground Pin (1) The tab on the bottom of the package enhances thermal performance and is electrically connected to GND (substrate level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. 4