LM1084 Regulators Datasheet

LM1084 Datasheet, PDF, Equivalent


Part Number

LM1084

Description

5-A Low Dropout Positive Regulators

Manufacture

etcTI

Total Page 29 Pages
Datasheet
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LM1084
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LM1084
SNVS037G – SEPTEMBER 1999 – REVISED JANUARY 2015
LM1084 5-A Low Dropout Positive Regulators
1 Features
1 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)
2 Applications
• Post Regulator for Switching DC-DC Converter
• High-Efficiency Linear Regulators
• Battery Chargers
3 Description
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.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM1084
TO-263 (3)
TO-220 (3)
10.18 mm × 8.41 mm
14.986 mm × 10.16 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM1084
LM1084
SNVS037G – SEPTEMBER 1999 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings ............................................................ 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 11
8 Application and Implementation ........................ 13
8.1 Application Information............................................ 13
8.2 Typical Applications ................................................ 13
9 Power Supply Recommendations...................... 20
10 Layout................................................................... 20
10.1 Layout Guidelines ................................................. 20
10.2 Layout Example .................................................... 20
10.3 Thermal Considerations ........................................ 20
11 Device and Documentation Support ................. 22
11.1 Trademarks ........................................................... 22
11.2 Electrostatic Discharge Caution ............................ 22
11.3 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
Changes from Revision F (March 2013) to Revision G
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
2 Submit Documentation Feedback
Product Folder Links: LM1084
Copyright © 1999–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM1084 SNVS037G – SEPTEMBE R 1999 – REVISED JANUARY 2015 LM1084 5-A Low Dropout Positive Regulators 1 Features •1 Available in 3.3-V, 5.0-V , and Adjustable Versions • Current L imiting and Thermal Protection • Outp ut Current 5 A • Industrial Temperatu re Range −40°C to 125°C • Line Re gulation 0.015% (Typical) • Load Regu lation 0.1% (Typical) 2 Applications Post Regulator for Switching DC-DC Co nverter • High-Efficiency Linear Regu lators • Battery Chargers 3 Descript ion The LM1084 is a regulator with a ma ximum dropout of 1.5 V at 5 A of load c urrent. The device has the same pinout as TI's industry standard LM317. Two re sistors are required to set the output voltage of the adjustable output voltag e version of the LM1084. Fixed output v oltage versions integrate the adjust re sistors. The LM1084 circuit includes a zener trimmed bandgap reference, current limiting, and thermal shutdown. Refer to LM1085 .
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