Radiation performance of the L4913 voltage regulator

The radiation-hard voltage regulator L4913 was developed by ST Microelectronics in collaboration with CERN to satisfy the radiation requirements of the LHC (Large Hadron Collider). Its radiation hardness has been extensively tested using X-rays, /sup 60/Co, and a pion beam. The regulator appears to tolerate TID (total ionizing dose) levels above 100 Mrad, and 1 MeV equivalent neutron fluence above 1.9/spl times/10/sup 15/ cm/sup -2/. These levels well exceed the LHC requirements.