This document introduces the features of the LM1085 series low dropout positive voltage regulators, including adjustable and fixed versions, which can provide 3.3V, 5.0V and 12.0V output voltages, with current limiting and thermal protection.
The LM1085 is a series of low dropout positive voltage regulators available in adjustable and fixed voltage versions (3.3V, 5.0V, and 12.0V). It features a maximum dropout of 1.5V at 3A of load current and shares the same pin-out as the industry standard LM317. The device includes a zener trimmed bandgap reference, current limiting, and thermal shutdown protection.
| Output Current | 3A |
|---|---|
| Line Regulation | 0.015% (typical) |
| Load Regulation | 0.1% (typical) |
| Maximum Dropout Voltage | 1.5V |
| Junction Temperature | 150˚C |
| Operating Temperature Range | -40˚C to +125˚C |
| Available Voltages | 3.3V, 5.0V, 12V, Adjustable |
| Packages | TO-220, TO-263 |
The maximum output current is 3A.
The device is available in fixed voltages of 3.3V, 5.0V, and 12.0V.
Yes, the circuit includes thermal shutdown protection.