Positive Regulators. LM1086 Datasheet

LM1086 Datasheet PDF


Part Number

LM1086

Description

1.5-A Low Dropout Positive Regulators

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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LM1086
SNVS039J – JUNE 2000 – REVISED APRIL 2015
LM1086 1.5-A Low Dropout Positive Regulators
1 Features
1 Available in 1.8-V, 2.5-V, 3.3-V, 5-V and
Adjustable Versions
• Current Limiting and Thermal Protection
• Output Current 1.5 A
• Line Regulation 0.015% (Typical)
• Load Regulation 0.1% (Typical)
2 Applications
• High-Efficiency Linear Regulators
• Battery Chargers
• Post Regulation for Switching Supplies
• Constant Current Regulators
• Microprocessor Supplies
3 Description
The LM1086 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.
Fixed output voltage versions integrate the adjust
resistors.
The LM1086 circuit includes a zener trimmed
bandgap reference, current limiting, and thermal
shutdown.
Refer to LM1084 for the 5-A version, and the LM1085
for the 3-A version.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
WSON (8)
4 mm × 4 mm
LM1086
DDPAK/TO-263 (3) 10.18 mm × 8.41 mm
TO-220 (3)
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.

LM1086
LM1086
SNVS039J – JUNE 2000 – REVISED APRIL 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 .................................................. 5
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................................................. 10
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...................... 18
10 Layout................................................................... 18
10.1 Layout Guidelines ................................................. 18
10.2 Layout Example .................................................... 18
10.3 Thermal Considerations ........................................ 19
11 Device and Documentation Support ................. 21
11.1 Development Support ........................................... 21
11.2 Trademarks ........................................................... 21
11.3 Electrostatic Discharge Caution ............................ 21
11.4 Glossary ................................................................ 21
12 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
Changes from Revision I (August 2014) to Revision J
Page
• Added 8-pin WSON pinout drawing and associated device information................................................................................ 3
Changes from Revision H (May 2013) to Revision I
Page
• Added 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 ................................................................................................. 4
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Product Folder Links: LM1086
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