LM1085

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM1085 SNVS038H – JULY 1999 – REVISED JANUARY 2015 LM1085 3-A Low Dropout Positive Regulators 1 Features 1 Available in 3.3-V, 5.0-V, 12-V and Adjustable Versions Current Limiting and Thermal Protection Output Current 3 A Line Regulation 0.015% (typical) Load Regulation 0.1% (typical) 2 Applications High Efficiency Linear Regulators Battery Charger Post Regulation for Switching Supplies Constant Current Regulator Microprocessor Supply 3 Description The LM1085 is a regulator with a maximum dropout of 1.5 V at 3 A of load current. It has the same pinout as TI's industry standard LM317. Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1085. Fixed output voltage versions integrate the adjust resistors. The LM1085 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown. Refer to the LM1084 for the 5A version, and the LM1086 for the 1.5A version. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM1085 DDPAK/TO-263 (3) 10.18 mm × 8.41 mm TO-220 (3) 14.986 mm × 10.16 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Typical Application 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. P...