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June 2005 LM1085 3A Low Dropout Positive Regulators General Description Features n Available in 3.3V, 5.0V, 12V and Adjustable Versions The LM1085 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 3A of load n Current Limiting and Thermal Protection current. It has the same pin-out as National Semiconductor’s n Output Current 3A industry standard LM317. n Line Regulation 0.015% (typical) The LM1085 is available in an adjustable version, which can n Load Regulation 0.1% (typical) set the output voltage with only two external resistors. It is also available in three fixed voltages: 3.3V, 5.0V and 12.0V. Applications The fixed versions integrate the adjust resistors. n High Efficiency Linear Regulators The LM1085 circuit includes a