Combine juice, marmalade, and mustard in a saucepan over medium-high heat, and simmer 15 min. or until syrupy
Heat a large ovenproof skillet over medium-high heat. Add oil; swirl to coat. Sprinkle pork with salt and pepper. Add to pan; cook 5min. or until brown. Turn pork; add rosemary and onion to pan. Pour juice mixture over pork; bake at 425° for 10 min. or until a thermometer registers 140°. Place onion and rosemary on a platter. Return to pan on med-high heat; add lime juice. Cook 4 min. or until liquid is syrupy. Add pork to platter; drizzle with sauce