Figure 4-1. 3-Pin TO-220 Packa…

LM1084IT-ADJ

REGULATOR LDO ADJ 5A TO-220

LM1084IT-ADJ is a 5A adjustable output linear regulator with a maximum dropout of 1.5V, in TO-220 package, operating from -40°C to 125°C, featuring current limiting and thermal protection.Checked against the datasheet

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Technical parameters

Key specs

Output current5 AMax

Input voltage≥ 29 V

Dropout voltage1.5 VMax · Max 1.5V (IOUT=5A，-40°C ≤ TJ ≤ 125°C)

Datasheet-verified parameters

18 items

Parameter	Value and test conditions	Source
Output Voltage	Adjustable (1.25V to 29V max input-output differential)
Output Current	5A
Input Voltage Range	Max input to output voltage differential: 29V (LM1084-ADJ)
Dropout Voltage	Typ 1.3V, Max 1.5V (IOUT=5A, -40°C ≤ TJ ≤ 125°C)
Package	TO-220 (NDE), 3 Pins
Operating Temperature	-40°C to 125°C
Grade	Industrial (Inferred from 'IT' suffix and -40 to 125C range)
RoHS	Yes
Reference Voltage	Min 1.238V, Typ 1.250V, Max 1.262V (IOUT=10mA, VIN-VOUT=3V, 1.5V ≤ VIN-VOUT ≤ 25V)
Line Regulation	Typ 0.015%, Max 0.2% (IOUT=10mA, 1.5V ≤ VIN-VOUT ≤ 15V)
Load Regulation	Typ 0.1%, Max 0.3% (VIN-VOUT=3V, 10mA ≤ IOUT ≤ IFULL LOAD)
Junction Temperature Range (Control Section)	Min -40°C, Max 125°C
Junction Temperature Range (Output Section)	Min -40°C, Max 150°C
Maximum Junction Temperature	150°C
Storage Temperature	Min -65°C, Max 150°C
ESD Rating (HBM)	±2000V
Thermal Resistance (Junction-to-Ambient)	22.7 °C/W (NDE Package)
Protection Features	Current limiting and thermal protection

All parameters (9)ExpandCollapse

Power
Current Limit	5.5 A (Min)
Dropout Voltage	1.5 V (Max)
Maximum input to output voltage differential	29 V (Max)
Output current	5A
Reference Voltage	1.250 V (Typ)
AC and DC characteristics
Line Regulation	0.015% (Typ)
Load Regulation	0.1 % (Typ)
Environment and package
Industrial temperature range	-40°C to 125°C
Package	NDE (TO-220, 3)

Pinout and package

Pin	Name	Function	Source
1		ADJ/GND: Adjust pin for the adjustable output voltage version. Ground pin for the fixed output voltage versions.
2		OUTPUT: Output voltage pin for the regulator.
3		INPUT: Input voltage pin for the regulator.

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DatasheetDatasheet · 2.1 MB · 2026-10-26

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