Brown was arrested on suspicion of driving while intoxicated on August 12, when police discovered he was drunk after citing him for driving without a licence.
The actor's pregnant girlfriend was allegedly in the passenger seat at the time of his arrest.
Law enforcement sources have now disclosed that Brown's blood alcohol level was 0.17, more than double California's legal limit of 0.08, TMZ reports.
Brown could face several months behind bars if he is convicted on two counts of driving under the influence.
The 23-year-old star has been ordered to answer the charges in court later this month.
Brown is best known for portraying the wise-cracking Eddie Thomas on That's So Raven and has also starred in the films Major Payne and Max Keeble's Big Move.
Watch Orlando Brown in Disney's 'Circle of Life' music video: