LM1086-MIL 1.5A Fixed / Adjustable Output Linear Regulator | TI.com

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1.5A Fixed / Adjustable Output Linear Regulator


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Other device variants can also be found in the   LM1086 product page


The LM1086-MIL is a regulator with a maximum dropout of 1.5 V at 1.5 A of load current. The device has the same pin-out as TI’s industry standard LM317.

Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1086-MIL. Fixed output voltage versions integrate the adjust resistors. Typically, no input capacitor is needed unless the device is situated more than 6 inches from the input filter capacitors. Output capacitor can be replaced with ceramic and appropriate ESR.

The LM1086-MIL circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Because the LM1086-MIL regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Exceeding the maximum input-to-output deferential will result in short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM1086-MIL can be also used as a precision current regulator.

For applications requiring greater output current, refer to LM1084 for the 5-A version, and the LM1085 for the 3-A version.


  • Available in Fixed 1.8-V, 2.5-V, 3.3-V, 5-V Versions
  • Available in Adjustable Version
  • Current Limiting and Thermal Protection
  • 2% Output Accuracy
  • Output Current 1.5 A
  • Line Regulation 0.015% (Typical)
  • Load Regulation 0.1% (Typical)
  • Maximum Input Voltage up to 29 V
  • Minimum Adjustable Output Voltage
    Down to 1.25 V
  • Stable with Ceramic Output Capacitor with ESR
  • Temperature Range : –40°C to +125°C

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