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LM1117
SNOS412O –FEBRUARY 2000–REVISED JUNE 2020
LM1117 800-mA, Low-Dropout Linear Regulator
1 Features
•For a newer drop-in alternative, see the TLV1117
•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
•AC drive power stage modules
•Merchant network and server PSU
•Industrial AC/DC
•Ultrasound scanners
•Servo drive control modules
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, |
TO-220 (3) |
14.986 mm × 10.16 mm |
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TO-252 (3) |
6.58 mm × 6.10 mm |
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LM1117I |
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WSON (8) |
4.00 mm × 4.00 mm |
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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
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
SNOS412O –FEBRUARY 2000–REVISED JUNE 2020 www.ti.com
Table of Contents
1 |
Features .................................................................. |
1 |
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8.4 |
Device Functional Modes........................................ |
14 |
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2 |
Applications ........................................................... |
1 |
9 |
Application and Implementation ........................ |
15 |
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3 |
Description ............................................................. |
1 |
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9.1 |
Application Information............................................ |
15 |
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4 |
Revision History..................................................... |
2 |
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9.2 |
Typical Application .................................................. |
15 |
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5 |
Device Comparison Table |
3 |
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9.3 |
System Examples ................................................... |
17 |
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10 |
Power Supply Recommendations |
18 |
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6 |
Pin Configuration and Functions |
4 |
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11 |
Layout |
18 |
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7 |
Specifications |
5 |
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11.1 |
Layout Guidelines |
18 |
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7.1 |
Absolute Maximum Ratings |
5 |
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11.2 |
Layout Example |
22 |
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7.2 |
ESD Ratings |
5 |
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12 |
Device and Documentation Support |
23 |
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7.3 |
Recommended Operating Conditions....................... |
5 |
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7.4 |
Thermal Information |
5 |
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12.1 |
Documentation Support ........................................ |
23 |
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12.2 Receiving Notification of Documentation Updates 23 |
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7.5 |
LM1117 Electrical Characteristics |
5 |
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12.3 |
Support Resources |
23 |
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7.6 |
LM1117I Electrical Characteristics |
8 |
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12.4 |
Trademarks |
23 |
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7.7 |
Typical Characteristics |
10 |
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12.5 |
Electrostatic Discharge Caution |
23 |
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8 |
Detailed Description |
12 |
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12.6 |
Glossary |
23 |
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8.1 |
Overview |
12 |
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13 |
Mechanical, Packaging, and Orderable |
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8.2 |
Functional Block Diagram ....................................... |
12 |
23 |
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8.3 |
Feature Description |
12 |
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Information ........................................................... |
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4 |
Revision History |
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NOTE: Page numbers for previous revisions may differ from page numbers in the current version. |
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Changes from Revision N (January 2016) to Revision O |
Page |
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• Added alternative device Features bullet .............................................................................................................................. |
1 |
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• |
Changed Applications section ............................................................................................................................................... |
1 |
• Added Device Comparison Table .......................................................................................................................................... |
3 |
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• Added Related Documentation section ................................................................................................................................ |
23 |
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Changes from Revision M (March 2013) to Revision N |
Page |
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•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
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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 ........................................................................................................................... |
4 |
Changes from Revision L (July 2012) to Revision M |
Page |
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• |
Changed layout of National Data Sheet to TI format ........................................................................................................... |
17 |
2 |
Submit Documentation Feedback |
Copyright © 2000–2020, Texas Instruments Incorporated |
Product Folder Links: LM1117
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LM1117 |
www.ti.com |
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SNOS412O –FEBRUARY 2000–REVISED JUNE 2020 |
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5 Device Comparison Table |
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IOUT |
PARAMETER |
LM1117 |
|
TLV1117 |
UNIT |
|
Input voltage range (max) |
15 |
|
15 |
V |
|
Load regulation accuracy |
1.6 |
|
1.6 |
% |
|
PSRR (120 Hz) |
75 |
|
75 |
dB |
|
Recommended operating temperature |
0 – 125 |
|
-40 – 125 |
°C |
800 mA |
SOT-223 TJA |
61.6 |
|
104.3 |
°C/W |
|
TO-220 TJA |
23.8 |
|
30.1 |
°C/W |
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TO-252 TJA |
45.1 |
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50.9 |
°C/W |
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TO-263 TJA |
41.3 |
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27.5 |
°C/W |
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WSON-8 TJA |
39.3 |
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38.3 |
°C/W |
Copyright © 2000–2020, Texas Instruments Incorporated |
Submit Documentation Feedback |
3 |
Product Folder Links: LM1117
LM1117
SNOS412O –FEBRUARY 2000–REVISED JUNE 2020 |
www.ti.com |
6 Pin Configuration and Functions
DCY Package
4-Pin SOT
Top View
NDE Package
3-Pin TO-220
Top View
NGN Package
8-Pin WSON
Top View
ADJ/GND |
1 |
8 |
NOT CONNECTED |
VIN |
2 |
7 |
VOUT |
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VOUT |
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VIN |
3 |
6 |
VOUT |
KTT Package
3-Pin TO-263
Top View
NDP Package
3-Pin TO-252
Top View
VIN |
4 |
5 |
VOUT |
When using the WSON package
Pins 2, 3 and 4 must be connected together and
Pins 5, 6 and 7 must be connected together
Pin Functions
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PIN |
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I/O |
DESCRIPTION |
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NAME |
TO-252 |
WSON |
SOT-223 |
TO-263 |
TO-220 |
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ADJ/GND |
1 |
1 |
1 |
1 |
1 |
— |
Adjust pin for adjustable output option. Ground pin for fixed |
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output option. |
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VIN |
3 |
2, 3, 4 |
3 |
3 |
3 |
I |
Input voltage pin for the regulator |
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VOUT |
2 , TAB |
5, 6, 7, |
2, 4 |
2, TAB |
2, TAB |
O |
Output voltage pin for the regulator |
|
TAB |
4 |
Submit Documentation Feedback |
Copyright © 2000–2020, Texas Instruments Incorporated |
Product Folder Links: LM1117
LM1117
www.ti.com |
SNOS412O –FEBRUARY 2000–REVISED JUNE 2020 |
7 |
Specifications |
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7.1 |
Absolute Maximum Ratings |
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over operating free-air temperature range (unless otherwise noted)(1) |
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MIN |
MAX |
UNIT |
Maximum Input Voltage (VIN to GND) |
|
20 |
V |
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Power Dissipation(2) |
Internally Limited |
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Junction Temperature (TJ)(2) |
|
150 |
°C |
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Storage Temperature, Tstg |
–65 |
150 |
°C |
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(1)Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)The maximum power dissipation is a function of TJ(max) , RθJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)–TA)/RθJA. All numbers apply for packages soldered directly into a PCB.
7.2 |
ESD Ratings |
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VALUE |
UNIT |
V |
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Electrostatic discharge |
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) |
±2000 |
V |
(ESD) |
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(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Pins listed as ±2000 V may actually have higher performance.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
|
|
MIN |
MAX |
UNIT |
Input Voltage (VIN to GND) |
|
|
15 |
V |
Junction Temperature (TJ)(1) |
LM1117 |
0 |
125 |
°C |
LM1117I |
−40 |
125 |
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(1)The maximum power dissipation is a function of TJ(max) , RθJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)–TA)/RθJA. All numbers apply for packages soldered directly into a PCB.
7.4 Thermal Information
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LM1117, LM1117I |
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THERMAL METRIC(1) |
DCY |
NDE |
NDP |
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NGN |
KTT |
UNIT |
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(SOT-223) |
(TO-220) |
(TO-252) |
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(WSON) |
(TO-263) |
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4 PINS |
3 PINS |
3 PINS |
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8 PINS |
3 PINS |
|
RθJA |
Junction-to-ambient thermal resistance |
61.6 |
23.8 |
45.1 |
|
39.3 |
41.3 |
°C/W |
RθJC(top) |
Junction-to-case (top) thermal resistance |
42.5 |
16.6 |
52.1 |
|
31.4 |
44.1 |
°C/W |
RθJB |
Junction-to-board thermal resistance |
10.4 |
5.3 |
29.8 |
|
16.5 |
24.2 |
°C/W |
ψJT |
Junction-to-top characterization parameter |
2.9 |
3.1 |
4.5 |
|
0.3 |
10.9 |
°C/W |
ψJB |
Junction-to-board characterization parameter |
10.3 |
5.3 |
29.4 |
|
16.7 |
23.2 |
°C/W |
RθJC(bot) |
Junction-to-case (bottom) thermal resistance |
— |
1.5 |
1.3 |
|
5.6 |
1.3 |
°C/W |
(1)For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report.
7.5 LM1117 Electrical Characteristics
unless otherwise specified, TJ = 25°C.
|
PARAMETER |
|
TEST CONDITIONS |
MIN(1) |
TYP(2) |
MAX(1) |
UNIT |
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LM1117-ADJ |
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1.238 |
1.25 |
1.262 |
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IOUT = 10 mA, VIN – VOUT = 2 V, TJ = 25°C |
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VREF |
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Reference Voltage |
LM1117-ADJ |
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TJ = 25°C |
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1.25 |
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V |
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10 mA ≤ IOUT ≤ 800 mA, 1.4 V ≤ |
over the junction temperature range |
1.225 |
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1.27 |
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VIN – VOUT ≤ 10 V |
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0°C to 125°C |
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(1)All limits are ensured by testing or statistical analysis.
(2)Typical Values represent the most likely parametric normal.
Copyright © 2000–2020, Texas Instruments Incorporated |
Submit Documentation Feedback |
5 |
Product Folder Links: LM1117