Tomlinson, about to turn 33, says it's time to move on and enjoy his family. He says he's still physically capable of playing but that the game takes a mental toll.
Tomlinson was drafted in the first round by San Diego in 2001 and became one of the biggest stars in team history. He was with the Chargers for nine seasons before playing the last two seasons with the New York Jets.
Tomlinson was voted NFL MVP in 2006, when he set league single-season records with 31 touchdowns, including 28 rushing, and 186 points.
Tomlinson finishes his career with 13,684 yards, fifth all-time, and 145 touchdowns.