LD1117A

Active

Low drop fixed and adjustable positive voltage regulators

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Sample & Buy
Solutions
Documentation
CAD Resources
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Quality & Reliability
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Sales Briefcase

Product overview

Description

The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (VREF= 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT-223, DPAK and TO-220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 μF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25 °C.
  • All features

    • Low dropout voltage:
      • 1.15 V typ. @ IOUT= 1 A, 25 °C
    • Very low quiescent current:
      • 5 mA typ. @ 25 °C
    • Output current up to 1 A
    • Fixed output voltage of:
      • 1.2 V, 1.8 V, 3.3 V
    • Adjustable version availability (VREF= 1.25 V)
    • Internal current and thermal limit
    • Only 10 μF for stability
    • Available in ± 2% (at 25 °C) and 4% in full temperature range
    • High supply voltage rejection:
      • 80 dB typ. (at 25 °C)
    • Temperature range: 0 °C to 125 °C

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LD1117A

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD1117ADT-TR
Active
DPAK Industrial Ecopack2
LD1117ADT12TR
Active
DPAK Industrial Ecopack2
LD1117ADT18TR
Active
DPAK Industrial Ecopack2
LD1117ADT33TR
Active
DPAK Industrial Ecopack2
LD1117AS12TR
Active
SOT-223 Industrial Ecopack2
LD1117AS18TR
Active
SOT-223 Industrial Ecopack2
LD1117AS33TR
Active
SOT-223 Industrial Ecopack2
LD1117ASTR
Active
SOT-223 Industrial Ecopack2
LD1117AV33
Active
TO-220 Industrial Ecopack2

LD1117ADT-TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT12TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT18TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ADT33TR

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS12TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS18TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AS33TR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117ASTR

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1117AV33

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
LD1117ADT-TR Available at 3 distributors

Distributor availability ofLD1117ADT-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 63 1 Buy from Distributor
RS COMPONENTS EUROPE 60 10 Buy from Distributor
Farnell Element14 EUROPE 1314 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

63

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

60

Min.Order

10

Farnell Element14

Stock

1314

Min.Order

1

Distributor reported inventory date: 2021-10-15

Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.3197 / 1k
LD1117ADT33TR Available at 3 distributors

Distributor availability ofLD1117ADT33TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 4250 10 Buy from Distributor
Newark Element14 AMERICA 888 0 Buy from Distributor
MOUSER WORLDWIDE 16315 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

4250

Min.Order

10

Newark Element14

Stock

888

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

16315

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.3197 / 1k
LD1117ASTR Available at 3 distributors

Distributor availability ofLD1117ASTR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 4020 1 Buy from Distributor
Newark Element14 AMERICA 182 0 Buy from Distributor
ANGLIA Live EUROPE 30 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

4020

Min.Order

1

Newark Element14

Stock

182

Min.Order

0

Region

AMERICA Buy from Distributor

ANGLIA Live

Stock

30

Min.Order

1

Distributor reported inventory date: 2021-10-15

Active
EAR99 NEC Tape And Reel SOT-223 0 125 CHINA 0.2139 / 1k
LD1117ADT18TR Available at 2 distributors

Distributor availability ofLD1117ADT18TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 120 1 Buy from Distributor
MOUSER WORLDWIDE 3030 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

120

Min.Order

1

MOUSER

Stock

3030

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.2955 / 1k
LD1117AV33 Available at 5 distributors

Distributor availability ofLD1117AV33

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11352 1 Buy from Distributor
RS COMPONENTS EUROPE 4010 10 Buy from Distributor
Newark Element14 AMERICA 3166 0 Buy from Distributor
MOUSER WORLDWIDE 1381 1 Buy from Distributor
Farnell Element14 EUROPE 392 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

11352

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

4010

Min.Order

10

Newark Element14

Stock

3166

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

1381

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

392

Min.Order

1

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tube TO-220 0 125 CHINA 0.2426 / 1k
LD1117AS12TR Available at 3 distributors

Distributor availability ofLD1117AS12TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2025 1 Buy from Distributor
MOUSER WORLDWIDE 12120 1 Buy from Distributor
Farnell Element14 EUROPE 125 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

2025

Min.Order

1

MOUSER

Stock

12120

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

125

Min.Order

1

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 0 125 CHINA 0.2139 / 1k
LD1117ADT12TR Available at 2 distributors

Distributor availability ofLD1117ADT12TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1481 1 Buy from Distributor
MOUSER WORLDWIDE 17 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

1481

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

17

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.3197 / 1k
LD1117AS18TR Available at 5 distributors

Distributor availability ofLD1117AS18TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4233 1 Buy from Distributor
RS COMPONENTS EUROPE 3825 1 Buy from Distributor
MOUSER WORLDWIDE 5854 1 Buy from Distributor
Farnell Element14 EUROPE 4924 1 Buy from Distributor
ANGLIA Live EUROPE 5 2500 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

4233

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

3825

Min.Order

1

MOUSER

Stock

5854

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

4924

Min.Order

1

ANGLIA Live

Stock

5

Min.Order

2500

Distributor reported inventory date: 2021-10-15

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 0 125 CHINA 0.2139 / 1k
LD1117AS33TR Available at 2 distributors

Distributor availability ofLD1117AS33TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1646 25 Buy from Distributor
Newark Element14 AMERICA 410 0 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

1646

Min.Order

25

Newark Element14

Stock

410

Min.Order

0

Region

AMERICA Buy from Distributor

Distributor reported inventory date: 2021-10-15

Active
EAR99 NEC Tape And Reel SOT-223 0 125 CHINA 0.2139 / 1k

LD1117ADT-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3197 / 1k

Distributor availability ofLD1117ADT-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 63 1 Buy from Distributor
RS COMPONENTS EUROPE 60 10 Buy from Distributor
Farnell Element14 EUROPE 1314 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

63

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

60

Min.Order

10

Farnell Element14

Stock

1314

Min.Order

1

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DPAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.3197 / 1k

Country of Origin

CHINA

LD1117ADT33TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3197 / 1k

Distributor availability ofLD1117ADT33TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 4250 10 Buy from Distributor
Newark Element14 AMERICA 888 0 Buy from Distributor
MOUSER WORLDWIDE 16315 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

4250

Min.Order

10

Newark Element14

Stock

888

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

16315

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DPAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.3197 / 1k

Country of Origin

CHINA

LD1117ASTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2139 / 1k

Distributor availability ofLD1117ASTR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 4020 1 Buy from Distributor
Newark Element14 AMERICA 182 0 Buy from Distributor
ANGLIA Live EUROPE 30 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

4020

Min.Order

1

Newark Element14

Stock

182

Min.Order

0

Region

AMERICA Buy from Distributor

ANGLIA Live

Stock

30

Min.Order

1

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2139 / 1k

Country of Origin

CHINA

LD1117ADT18TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2955 / 1k

Distributor availability ofLD1117ADT18TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 120 1 Buy from Distributor
MOUSER WORLDWIDE 3030 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

120

Min.Order

1

MOUSER

Stock

3030

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DPAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2955 / 1k

Country of Origin

CHINA

LD1117AV33

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2426 / 1k

Distributor availability ofLD1117AV33

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11352 1 Buy from Distributor
RS COMPONENTS EUROPE 4010 10 Buy from Distributor
Newark Element14 AMERICA 3166 0 Buy from Distributor
MOUSER WORLDWIDE 1381 1 Buy from Distributor
Farnell Element14 EUROPE 392 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

11352

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

4010

Min.Order

10

Newark Element14

Stock

3166

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

1381

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

392

Min.Order

1

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2426 / 1k

Country of Origin

CHINA

LD1117AS12TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2139 / 1k

Distributor availability ofLD1117AS12TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2025 1 Buy from Distributor
MOUSER WORLDWIDE 12120 1 Buy from Distributor
Farnell Element14 EUROPE 125 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

2025

Min.Order

1

MOUSER

Stock

12120

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

125

Min.Order

1

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2139 / 1k

Country of Origin

CHINA

LD1117ADT12TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3197 / 1k

Distributor availability ofLD1117ADT12TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1481 1 Buy from Distributor
MOUSER WORLDWIDE 17 1 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

1481

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

17

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DPAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.3197 / 1k

Country of Origin

CHINA

LD1117AS18TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2139 / 1k

Distributor availability ofLD1117AS18TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4233 1 Buy from Distributor
RS COMPONENTS EUROPE 3825 1 Buy from Distributor
MOUSER WORLDWIDE 5854 1 Buy from Distributor
Farnell Element14 EUROPE 4924 1 Buy from Distributor
ANGLIA Live EUROPE 5 2500 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

DIGIKEY

Stock

4233

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

3825

Min.Order

1

MOUSER

Stock

5854

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

4924

Min.Order

1

ANGLIA Live

Stock

5

Min.Order

2500

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2139 / 1k

Country of Origin

CHINA

LD1117AS33TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2139 / 1k

Distributor availability ofLD1117AS33TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1646 25 Buy from Distributor
Newark Element14 AMERICA 410 0 Buy from Distributor

Distributor reported inventory date: 2021-10-15

Distributor Name

RS COMPONENTS

Stock

1646

Min.Order

25

Newark Element14

Stock

410

Min.Order

0

Region

AMERICA Buy from Distributor

Distributor reported inventory date: 2021-10-15

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.2139 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors