The MC33095 are regulator control integrated circuits designed for use in automotive 12 V alternator charging systems. Few external components are required for full system implementation. These devices provide control for a broad range of 12 V alternator charging systems when used in conjunction with the appropriate NXP® Power Darlington transistor to control the field current of the specific alternator. The MC33095 has internal detection and protection features to withstand extreme electrical variations encountered in harsh automotive environments.