BST31PGND32PGND33SW34SW35PVIN36PVIN47SW48SW49PGND410PGND411BST412CFG3413EN414COMP415FB416PWRGD17CFG1218FB219COMP220EN221PVIN222PVIN223PVIN224SW225SW226SW227BST228DL229PGND30DL131BST132SW133SW134SW135PVIN136PVIN137PVIN138EN139COMP140FB141RT42VDD43SYNC/MODE44VREG45FB346COMP347EN348EP49