Sec. 3. (a) The state public defender shall prepare and maintain a schedule of minimum attorney's fees for all general classifications of criminal trials, and proceedings on plea of guilty, subject to the approval of the supreme court. The schedule shall be furnished upon request to all criminal courts. A fee approved by any court for the services of:
(1) the state public defender;
(2) the state public defender's deputy; or
(3) any attorney appointed by the state public defender and the judge under a request made to the state public defender;
may not be less than the approved minimum fee provided in the schedule.
(b) In cases where there has been a change of venue, the presiding judge may not approve a fee for a public defender from the office of the state public defender that exceeds one hundred twenty-five percent (125%) of the minimum fee schedule established under this chapter.