LM1117 Regulator Datasheet

LM1117 Datasheet, PDF, Equivalent


Part Number

LM1117

Description

800-mA Low-Dropout Linear Regulator

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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LM1117
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LM1117
SNOS412N – FEBRUARY 2000 – REVISED JANUARY 2016
LM1117 800-mA Low-Dropout Linear Regulator
1 Features
1 Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and
Adjustable Versions
• Space-Saving SOT-223 and WSON Packages
• Current Limiting and Thermal Protection
• Output Current 800 mA
• Line Regulation 0.2% (Maximum)
• Load Regulation 0.4% (Maximum)
• Temperature Range
– LM1117: 0°C to 125°C
– LM1117I: 40°C to 125°C
2 Applications
• Post Regulator for Switching DC–DC Converter
• High Efficiency Linear Regulators
• Battery Chargers
• Portable Instrumentation
• Active SCSI Termination Regulator
3 Description
The LM1117 is a low dropout voltage regulator with a
dropout of 1.2 V at 800 mA of load current.
The LM1117 is available in an adjustable version,
which can set the output voltage from 1.25 to 13.8 V
with only two external resistors. In addition, it is
available in five fixed voltages, 1.8 V, 2.5 V, 3.3 V,
and 5 V.
The LM1117 offers current limiting and thermal
shutdown. Its circuit includes a Zener trimmed
bandgap reference to assure output voltage accuracy
to within ±1%.
A minimum of 10-µF tantalum capacitor is required at
the output to improve the transient response and
stability.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
SOT-223 (4) 6.50 mm × 3.50 mm
LM1117,
LM1117I
TO-220 (3)
TO-252 (3)
WSON (8)
14.986 mm × 10.16 mm
6.58 mm × 6.10 mm
4.00 mm × 4.00 mm
TO-263 (3)
10.18 mm × 8.41 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Adjustable Output Regulator
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.

LM1117
LM1117
SNOS412N – FEBRUARY 2000 – REVISED JANUARY 2016
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 LM1117 Electrical Characteristics............................. 5
6.6 LM1117I Electrical Characteristics............................ 7
6.7 Typical Characteristics .............................................. 9
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 12
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Application .................................................. 14
8.3 System Examples ................................................... 16
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Example .................................................... 21
11 Device and Documentation Support ................. 22
11.1 Community Resources.......................................... 22
11.2 Trademarks ........................................................... 22
11.3 Electrostatic Discharge Caution ............................ 22
11.4 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision M (March 2013) to Revision N
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
• Removed LM1117-N-2.85 option after part became inactive................................................................................................. 1
• Removed TO-263 Pinout Side View image ........................................................................................................................... 3
Changes from Revision L (July 2012) to Revision M
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 16
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Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM1117 SNO S412N – FEBRUARY 2000 – REVISED JAN UARY 2016 LM1117 800-mA Low-Dropout Lin ear Regulator 1 Features •1 Availabl e in 1.8 V, 2.5 V, 3.3 V, 5 V, and Adju stable Versions • Space-Saving SOT-22 3 and WSON Packages • Current Limitin g and Thermal Protection • Output Cur rent 800 mA • Line Regulation 0.2% (M aximum) • Load Regulation 0.4% (Maxim um) • Temperature Range – LM1117: 0 °C to 125°C – LM1117I: −40°C to 125°C 2 Applications • Post Regulato r for Switching DC–DC Converter • H igh Efficiency Linear Regulators • Ba ttery Chargers • Portable Instrumenta tion • Active SCSI Termination Regula tor 3 Description The LM1117 is a low dropout voltage regulator with a dropou t of 1.2 V at 800 mA of load current. T he LM1117 is available in an adjustable version, which can set the output volt age from 1.25 to 13.8 V with only two external resistors. In addition, it is available in five fixed vo.
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