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LT1083 Datasheet(PDF) 1 Page - Linear Technology |
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LT1083 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LT1083/LT1084/LT1085 108345fe ■ Three-Terminal Adjustable ■ Output Current of 3A, 5A or 7.5A ■ Operates Down to 1V Dropout ■ Guaranteed Dropout Voltage at Multiple Current Levels ■ Line Regulation: 0.015% ■ Load Regulation: 0.1% ■ 100% Thermal Limit Functional Test ■ Fixed Versions Available ■ Available in 3-Lead Plastic TO-220, TO-3P and DD Packages 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 differen- tial 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 three-terminal regulators. A 10 µF output ca- pacitor is required on these new devices. However, this is included in most regulator designs. Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LT1083 quies- cent current flows into the load, increasing efficiency. 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators 121 Ω 1% IN OUT ADJ 365 Ω 1% 10 µF 5V AT 7.5A LT1083 VIN ≥ 6.5V 1083/4/5 ADJ TA01 + 10 µF* TANTALUM + *REQUIRED FOR STABILITY 5V, 7.5A Regulator DEVICE OUTPUT CURRENT* LT1083 7.5A LT1084 5.0A LT1085 3.0A *For a 1.5A low dropout regulator see the LT1086 data sheet. ■ High Efficiency Linear Regulators ■ Post Regulators for Switching Supplies ■ Constant Current Regulators ■ Battery Chargers OUTPUT CURRENT 0 2 1 0 1083/4/5 ADJ TA02 IFULL LOAD Dropout Voltage vs Output Current APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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