LT1085

LT1083/LT1084/LT1085 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators Features nn 3-Terminal Adjustable nn Output Current of 3A, 5A or 7.5A nn Operates Down to 1V Dropout nn Guaranteed Dropout Voltage at Multiple Current Levels nn Line Regulation: 0.015% nn Load Regulation: 0.1% nn 100% Thermal Limit Functional Test nn Fixed Versions Available nn Available in 3-Lead Plastic TO-220 and DD Packages Applications nn High Efficiency Linear Regulators nn Post Regulators for Switching Supplies nn Constant Current Regulators nn Battery Chargers DEVICE OUTPUT CURRENT* LT1083 7.5A LT1084 5.0A LT1085 3.0A *For a 1.5A low dropout regulator see the LT1086 data sheet. Description The LT®1083 series of positive adjustable regulators are designed to provide 7.5A, 5A and 3A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input-to-output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions. The LT1083/LT1084/LT1085 devices are pin compatible with older 3-terminal regulators. A 10µF output capacitor is required on these new devices. However, this is included in most regulator designs. Unlike PNP...