LM1086-MIL

ACTIVE

1.5A Fixed / Adjustable Output Linear Regulator

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Product details

Parameters

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Features

  • 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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Description

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.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LM1086-MIL 1.5-A Low Dropout Positive Voltage Regulator datasheet Jun. 24, 2017
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Application note Linear power for automated industrial systems Jan. 09, 2015
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) May 06, 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) May 06, 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) May 05, 2013
More literature Die D/S LM1086-ADJ MDC 1.5A Low Dropout Positive Regulators Sep. 12, 2012
Application note Packaging Limits Range of Linear Regulators May 08, 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun. 04, 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators Oct. 21, 1999

Design & development

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