The LM2990 is a three-terminal, low-dropout, 1-A negative voltage regulator available with fixed output ? Fixed Output Voltages: ?5 V, ?5.2 V, ?12 V, and voltages of ?5 V, ?5.2 V, ?12 V, and ?15 V. ?15 V The LM2990 uses circuit design techniques to ? 5% Output Accuracy over Entire Operating Range provide low-dropout and low-quiescent current. The ? Output Current in Excess of 1 A dropout voltage at 1-A load current is typically 0.6 V ? Dropout Voltage Typically 0.6 V at 1-A Load and an ensured worst-case maximum of 1 V over the entire operating temperature range. The quiescent ? Low Quiescent Current current is typically 1 mA with 1-A load current and an ? Internal Short-Circuit Current Limit input-output voltage differential greater than 3 V. A ? Internal Thermal Shutdown with Hysteresis unique circuit design of the internal bias supply limits ? Functional Complement to the LM2940 Series the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (VOUT ? VIN ? 3 V). Output voltage accuracy is ensured to ?5% over load 2 Applications and temperature extremes