LM1117 - 800mA Low-Dropout Linear Regulator
Datasheet Packaging Samples & Pricing Reliability Design Tools Reference Designs Application Notes Knowledge Base

Features

Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable Versions

  

Space Saving SOT-223 and LLP Packages

  

Current Limiting and Thermal Protection

  

Output Current

800mA

Line Regulation

0.2% (Max)

Load Regulation

0.4% (Max)
  • Temperature Range

    LM1117

    0°C to 125°C

    LM1117I

    -40°C to 125°C

General Description

The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. More...


Applications

•2.85V Model for SCSI-2 Active Termination
•Post Regulator for Switching DC/DC Converter
•High Efficiency Linear Regulators
•Battery Charger
•Battery Powered Instrumentation
  Typical Application
click for larger image


ParametersValues
Output Current 800 mA
Output Min 1.8, 1.25, 3.3, 5, 2.5 Volt
Input Min Voltage 2.65, 2.6 Volt
Input Max Voltage 15 Volt
Dropout Voltage 1.2 Volt
Adjustable Output Yes, No
Quiescent Current 5 mA
On/Off Pin No
Error Flag No
RegType LDO
Temperature Min 0 deg C
Temperature Max 125 deg C
Output Voltage 1.8, 3.3, Undefined, 5, 2.5 Volt
Output Max 1.8, 13.8, 3.3, 5, 2.5 Volt


Typical Performance

click for larger image


  Also Recommended
LP38851▲New! National's LP38k Family Of High
LP38852▲Performance LDOs Power Digital ICs
LP38853▲See More At LDO.NATIONAL.COM
Additional Resources
Design Tools

Application Notes


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM1117/LM1117I 800mA Low-Dropout Linear Regulator 925
Kbytes		 24-Apr-06 Download
LM1117/LM1117I 800mA Low-Dropout Linear Regulator (Japanese)
 820 Kbytes   Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM1117ILD-3.3LLP8NOPB3260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.66reel
of
1000		NS
UZXYTT
1117I33
8 weeks7500
LM1117ILD-5.0LLP8NOPB3260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.66reel
of
1000		NS
UZXYTT
1117I50
8 weeks2000
LM1117LD-5.0LLP8NOPB3260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.53reel
of
1000		NS
UZXYTT
1117-50
8 weeks10000
LM1117ILD-ADJLLP8NOPB3260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.66reel
of
1000		NS
UZXYTT
1117IAD
8 weeks2000
LM1117LD-1.8LLP8NOPB
STD		3
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.53reel
of
1000		NS
UZXYTT
1117-18
8 weeks2000
LM1117LD-2.5LLP8NOPB3260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.53reel
of
1000		NS
UZXYTT
1117-25
8 weeks2000
LM1117LD-3.3LLP8NOPB
STD		3
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.53reel
of
1000		NS
UZXYTT
1117-33
8 weeks2500
LM1117LD-ADJLLP8NOPB
STD		3
1		260
235		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.53reel
of
1000		NS
UZXYTT
1117ADJ
8 weeks50000
LM1117ILDX-5.0LLP8NOPB
STD		3
1		260
235		RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.66reel
of
4500		NS
UZXYTT
1117I50
8 weeksN/A
LM1117ILDX-ADJLLP8NOPB
STD		3
1		260
235		RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.66reel
of
4500		NS
UZXYTT
1117IAD
8 weeks5000
LM1117LDX-3.3LLP8NOPB3260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.53reel
of
4500		NS
UZXYTT
1117-33
8 weeksN/A
LM1117LDX-5.0LLP8NOPB
STD		3
1		260
235		RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.53reel
of
4500		NS
UZXYTT
1117-50
8 weeks5000
LM1117LDX-1.8LLP8NOPB
STD		3
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.53reel
of
4500		NS
UZXYTT
1117-18
8 weeks5000
LM1117LDX-ADJLLP8NOPB
STD		3
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.53reel
of
4500		NS
UZXYTT
1117ADJ
8 weeks7500
LM1117MP-2.85SOT-2234NOPB
STD		1
1		260
260		RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.42reel
of
1000		XYTT
N04A
8 weeks2000
LM1117IMP-3.3SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N05B
8 weeks7500
LM1117IMP-5.0SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
1000		XYTT
N06B
8 weeks2500
LM1117IMP-ADJSOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N03B
8 weeks15000
LM1117MP-1.8SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N12A
8 weeks5000
LM1117MP-2.5SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N13A
8 weeks15000
LM1117MP-3.3SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N05A
8 weeks2500
LM1117MP-5.0SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N06A
8 weeks2500
LM1117MP-ADJSOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.42reel
of
1000		XYTT
N03A
12 weeks2500
LM1117MPX-2.85SOT-2234NOPB1260RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N04A
8 weeks5000
LM1117IMPX-3.3SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N05B
8 weeks10000
LM1117IMPX-5.0SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N06B
8 weeks7500
LM1117IMPX-ADJSOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N03B
12 weeks10000
LM1117MPX-1.8SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N12A
8 weeks7500
LM1117MPX-2.5SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N13A
8 weeks5000
LM1117MPX-3.3SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N05A
6 weeks2500
LM1117MPX-5.0SOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N06A
8 weeks3000
LM1117MPX-ADJSOT-2234NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.42reel
of
2000		XYTT
N03A
12 weeks2500
LM1117T-2.85TO-2203NOPB1NARoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.59rail
of
45		NSUZXYTTE#
LM1117T
2.85
8 weeks1000
LM1117T-2.5TO-2203NOPB1NARoHS Download Full productionN/A
 
Buy Now 		1K+$0.59rail
of
45		NSUZXYTTE#
LM1117T
2.5
8 weeks5000
LM1117T-3.3TO-2203NOPB
STD		1
1		NA
NA		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.59rail
of
45		NSUZXYTTE#
LM1117T
3.3
8 weeks1000
LM1117T-5.0TO-2203NOPB
STD		1
1		NA
NA		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.59rail
of
45		NSUZXYTTE#
LM1117T
5.0
8 weeks2000
LM1117T-ADJTO-2203NOPB
STD		1
1		NA
NA		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.59rail
of
45		NSUZXYTTE#
LM1117T
ADJ
8 weeks3000
LM1117DT-1.8TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
DT-1.8
8 weeks2000
LM1117DT-2.5TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
DT-2.5
8 weeks2000
LM1117DT-3.3TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
DT-3.3
8 weeks2000
LM1117DT-5.0TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
DT-5.0
8 weeks2500
LM1117DT-ADJTO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
DT-ADJ
8 weeks1000
LM1117IDT-3.3TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
IDT-3.3
8 weeks2000
LM1117IDT-5.0TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
IDT-5.0
8 weeks2000
LM1117IDT-ADJTO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54rail
of
75		NSUZXYTT
LM1117
IDT-ADJ
8 weeks1000
LM1117DTX-1.8TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
DT-1.8
8 weeks3000
LM1117DTX-2.5TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
DT-2.5
8 weeks5000
LM1117DTX-3.3TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
DT-3.3
6 weeks3000
LM1117DTX-5.0TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
DT-5.0
16 weeks7500
LM1117DTX-ADJTO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
DT-ADJ
6 weeks3000
LM1117IDTX-3.3TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
IDT-3.3
8 weeks15000
LM1117IDTX-5.0TO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
IDT-5.0
8 weeks3000
LM1117IDTX-ADJTO-2523NOPB
STD		2
1		260
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.54reel
of
2500		NSUZXYTT
LM1117
IDT-ADJ
8 weeks10000
LM1117S-3.3TO-2633NOPB
STD		3
3		245
235		RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.65rail
of
45		NSUZXYTTE#
LM1117S
3.3
8 weeks1000
LM1117S-5.0TO-2633NOPB3245RoHS Download Lifetime buyN/A
 
Buy Now 		1K+$0.65rail
of
45		NSUZXYTTE#
LM1117S
5.0
8 weeks1000
LM1117S-ADJTO-2633NOPB
STD		3
3		245
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.65rail
of
45		NSUZXYTTE#
LM1117S
ADJ
8 weeks2000
LM1117SX-3.3TO-2633NOPB
STD		3
3		245
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.65reel
of
500		NSUZXYTTE#
LM1117S
3.3
8 weeks2000
LM1117SX-5.0TO-2633NOPB
STD		3
3		245
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.65reel
of
500		NSUZXYTTE#
LM1117S
5.0
8 weeks2500
LM1117SX-ADJTO-2633NOPB
STD		3
3		245
235		RoHS Download Full productionN/A
 
Buy Now 		1K+$0.65reel
of
500		NSUZXYTTE#
LM1117S
ADJ
8 weeks5000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM1117-3.3 MDC
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM1117-3.3 MWC
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM1117-4.1_NRE
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117DT-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117DTX-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117ILD-3.3
LM1117ILDX-3.3
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117ILD-5.0
LM1117LD-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117ILDX-3.3
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117ILDX-5.0
LM1117LDX-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117ILDX-ADJ
LM1117LDX-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117LD-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117LD-5.0
LM1117LD-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117LDX-2.5
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117LDX-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117LDX-3.3
LM1117LDX-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117LDX-5.0
LM1117LDX-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117MP-2.85
LM1117MP-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117MP-4.1
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117MPX-2.85
LM1117MPX-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117MPX-4.1
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117S-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117S-3.3
LM1117SX-3.3
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117S-5.0
LM1117SX-5.0
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM1117SX-2.85
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117T-1.8
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM1117T-2.85
LM1117T-ADJ
NATIONAL SEMICONDUCTOR
01 Dec 2009

General Description

The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. It has the same pin-out as National Semiconductor's industry standard LM317.

The LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V.

The LM1117 offers current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap reference to assure output voltage accuracy to within ±1%.

The LM1117 series is available in LLP, TO-263, SOT-223, TO-220, and TO-252 D-PAK packages. A minimum of 10µF tantalum capacitor is required at the output to improve the transient response and stability.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM1117DT-1.8LB30003366400383050011086914834
LM1117DT-2.5LB30003366400383050011086914834
LM1117DT-2.85LB30003366400383050011086914834
LM1117DT-3.3LB30003366400383050011086914834
LM1117DT-5.0LB30003366400383050011086914834
LM1117DT-ADJLB30003366400383050011086914834
LM1117DTX-1.8LB30003366400383050011086914834
LM1117DTX-2.5LB30003366400383050011086914834
LM1117DTX-2.85LB30003366400383050011086914834
LM1117DTX-3.3LB30003366400383050011086914834
LM1117DTX-5.0LB30003366400383050011086914834
LM1117DTX-ADJLB30003366400383050011086914834
LM1117IDT-3.3LB30003366400383050011086914834
LM1117IDT-5.0LB30003366400383050011086914834
LM1117IDT-ADJLB30003366400383050011086914834
LM1117IDTX-3.3LB30003366400383050011086914834
LM1117IDTX-5.0LB30003366400383050011086914834
LM1117IDTX-ADJLB30003366400383050011086914834
LM1117ILD-3.3LB30003366400383050011086914834
LM1117ILD-5.0LB30003366400383050011086914834
LM1117ILD-ADJLB30003366400383050011086914834
LM1117ILDX-5.0LB30003366400383050011086914834
LM1117ILDX-ADJLB30003366400383050011086914834
LM1117IMP-3.3LB30003366400383050011086914834
LM1117IMP-5.0LB30003366400383050011086914834
LM1117IMP-ADJLB30003366400383050011086914834
LM1117IMPX-3.3LB30003366400383050011086914834
LM1117IMPX-5.0LB30003366400383050011086914834
LM1117IMPX-ADJLB30003366400383050011086914834
LM1117LD-1.8LB30003366400383050011086914834
LM1117LD-2.5LB30003366400383050011086914834
LM1117LD-3.3LB30003366400383050011086914834
LM1117LD-5.0LB30003366400383050011086914834
LM1117LD-ADJLB30003366400383050011086914834
LM1117LDX-1.8LB30003366400383050011086914834
LM1117LDX-3.3LB30003366400383050011086914834
LM1117LDX-5.0LB30003366400383050011086914834
LM1117LDX-ADJLB30003366400383050011086914834
LM1117MP-1.8LB30003366400383050011086914834
LM1117MP-2.5LB30003366400383050011086914834
LM1117MP-2.85LB30003366400383050011086914834
LM1117MP-3.3LB30003366400383050011086914834
LM1117MP-5.0LB30003366400383050011086914834
LM1117MP-ADJLB30003366400383050011086914834
LM1117MPX-1.8LB30003366400383050011086914834
LM1117MPX-2.5LB30003366400383050011086914834
LM1117MPX-2.85LB30003366400383050011086914834
LM1117MPX-3.3LB30003366400383050011086914834
LM1117MPX-5.0LB30003366400383050011086914834
LM1117MPX-ADJLB30003366400383050011086914834
LM1117S-3.3LB30003366400383050011086914834
LM1117S-5.0LB30003366400383050011086914834
LM1117S-ADJLB30003366400383050011086914834
LM1117SX-3.3LB30003366400383050011086914834
LM1117SX-5.0LB30003366400383050011086914834
LM1117SX-ADJLB30003366400383050011086914834
LM1117T-1.8LB30003366400383050011086914834
LM1117T-2.5LB30003366400383050011086914834
LM1117T-2.85LB30003366400383050011086914834
LM1117T-3.3LB30003366400383050011086914834
LM1117T-5.0LB30003366400383050011086914834
LM1117T-ADJLB30003366400383050011086914834

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
LM1117 Qualification Package 1211 Kbytes 14-Sep-1999 View Online Download  

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Reference Designs
•RD-143 - Lowest Power 8-bit 3 GSPS Data Acquisition System

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1378: Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators 647
Kbytes		 15-Jul-05 Download
AN-1378 (Chinese): Application Note 1378 Method For Calculating Output Voltage Tolerances in Adjustable Regulators
 383 Kbytes  

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More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-41: Application Note 41 Precision IC Comparator Runs from +5V Logic Supply 150
Kbytes		 2-Oct-02 Download
AN-46: The Phase Locked Loop IC as a Communication System Building Block 277
Kbytes		 4-Nov-95 Download

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[Information as of 8-Nov-2009]