Product details

Output options Adjustable Output, Fixed Output Iout (Max) (A) 5.5 Vin (Max) (V) 29 Vin (Min) (V) 2.6 Vout (Max) (V) 27.5 Vout (Min) (V) 1.25 Fixed output options (V) 3.3, 5 Noise (uVrms) 38 Iq (Typ) (mA) 5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1.5 PSRR @ 100 KHz (dB) 30 Dropout voltage (Vdo) (Typ) (mV) 1300 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 5.5 Vin (Max) (V) 29 Vin (Min) (V) 2.6 Vout (Max) (V) 27.5 Vout (Min) (V) 1.25 Fixed output options (V) 3.3, 5 Noise (uVrms) 38 Iq (Typ) (mA) 5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1.5 PSRR @ 100 KHz (dB) 30 Dropout voltage (Vdo) (Typ) (mV) 1300 Operating temperature range (C) -40 to 125
TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-263 (KTT) 3 155 mm² 10.16 x 15.24
  • Available in 3.3-V, 5.0-V, and Adjustable Versions
  • Current Limiting and Thermal Protection
  • Output Current 5 A
  • Industrial Temperature Range –40°C to 125°C
  • Line Regulation 0.015% (Typical)
  • Load Regulation 0.1% (Typical)
  • Available in 3.3-V, 5.0-V, and Adjustable Versions
  • Current Limiting and Thermal Protection
  • Output Current 5 A
  • Industrial Temperature Range –40°C to 125°C
  • Line Regulation 0.015% (Typical)
  • Load Regulation 0.1% (Typical)

The LM1084 is a regulator with a maximum dropout of 1.5 V at 5 A of load current. The device 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 LM1084. Fixed output voltage versions integrate the adjust resistors.

The LM1084 circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown.

Refer to LM1085 for the 3A version, and the LM1086 for the 1.5A version.

The LM1084 is a regulator with a maximum dropout of 1.5 V at 5 A of load current. The device 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 LM1084. Fixed output voltage versions integrate the adjust resistors.

The LM1084 circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown.

Refer to LM1085 for the 3A version, and the LM1086 for the 1.5A version.

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Technical documentation

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Type Title Date
* Data sheet LM1084 5-A Low Dropout Positive Regulators datasheet (Rev. G) PDF | HTML 09 Jan 2015
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
Technical article Selecting ESR for linear regulator stability 14 Mar 2016
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

LM1084 3.3V Unencrypted PSpice Transient Model

SNVM997.ZIP (1 KB) - PSpice Model
Simulation model

LM1084_3P3 PSpice Transient Model

SNVM617.ZIP (31 KB) - PSpice Model
Simulation model

LM1084_5P0 PSpice Transient Model

SNVM621.ZIP (31 KB) - PSpice Model
Simulation model

LM1084_5P0 Unencrypted PSpice Transient Model

SNVM996.ZIP (1 KB) - PSpice Model
Simulation model

LM1084_ADJ PSpice Transient Model

SNVM616.ZIP (33 KB) - PSpice Model
Simulation model

LM1084_ADJ Unencrypted PSpice Transient Model

SNVM998.ZIP (1 KB) - PSpice Model
Package Pins Download
DDPAK/TO-263 (KTT) 3 View options
TO-220 (NDE) 3 View options

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