Former Jacksonville Jaguars star Telvin Smith has been arrested in Florida ... jail records show he was booked Wednesday on a charge of "unlawful sexual activity with certain minors."
Details surrounding the case are unclear ... we're working on it, but records show the 29-year-old was arrested by the Jacksonville Sheriff's Office and processed at 5:20 p.m. ET.
Jail records also show the 6'4", 215-pound ex-linebacker had his bond set at $50,003.
Smith was a stud for the Jaguars after being selected in the 5th round of the 2014 NFL Draft ... starting 69 games from '14 to '18 while making 1 Pro Bowl appearance.