LM1085 Datasheet – 3A, Low Dropout Positive Regulator

Part Number: LM1085

Function: 3A, Low Dropout Positive Regulator

Package: TO-220 and DDPAK, TO-263 Type

Manufacturer: Texas Instruments


LM1085 datasheet


The LM1085 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 3A of load current. It has the same pin-out as TI’s industry standard LM317. The LM1085 is available in an adjustable version, which can set the output voltage with only two external resistors. It is also available in three fixed voltages: 3.3V, 5.0V and 12.0V. The fixed versions integrate the adjust resistors.
The LM1085 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown. The LM1085 series is available in TO-220 and DDPAK/TO-263 packages. Refer to the LM1084 for the 5A version, and the LM1086 for the 1.5A version.


• Available in 3.3V, 5.0V, 12V and Adjustable Versions
• Current Limiting and Thermal Protection
• Output Current 3A
• Line Regulation 0.015% (typical)
• Load Regulation 0.1% (typical)

Other data sheets are available within the file:

LM1085IS-12/NOPB, LM1085IS-3.3, LM1085IS-3.3/NOPB, LM1085IS-5.0

LM1085 Datasheet PDF Download

LM1085 pdf