DESCRIPTION The L7900 series with three terminals negative regulators is available in TO-220, ISOWATT220 TO-3 and D2PAK packages and various fixed ones output voltages, making it usable in a wide range of applications. These supervisors can bid locally card arrangement, which eliminates distribution problems related to single-point regulation; moreover with the same voltage option as the L7800 positive standard series, they are particularly suitable for split power supplies. In In addition, the -5.2V is also available for ECL system. If sufficient heat dissipation is provided, they can supply more than 1.5 A output current. Although primarily designed as a fixed voltage regulators, these devices can be used with external components to get adjustable voltages and currents.