LD1117A

Active

Low drop fixed and adjustable positive voltage regulators

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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

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Related Applications

Industrial

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STMicroelectronics - LD1117A

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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 2 distributors

Distributor availability ofLD1117ADT-TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 190 10 Order Now
Farnell Element14 EUROPE 1644 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

RS COMPONENTS

Stock

190

Min.Order

10

Region

EUROPE Order Now

Farnell Element14

Stock

1644

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
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
DIGIKEY WORLDWIDE 278 1 Order Now
RS COMPONENTS EUROPE 4870 10 Order Now
Newark Element14 AMERICA 914 0 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

278

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4870

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

914

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.3197 / 1k
LD1117ASTR Available at 5 distributors

Distributor availability ofLD1117ASTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5156 1 Order Now
RS COMPONENTS EUROPE 5180 1 Order Now
Newark Element14 AMERICA 182 0 Order Now
Farnell Element14 EUROPE 918 1 Order Now
ANGLIA Live EUROPE 30 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

5156

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

5180

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

182

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

918

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

30

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
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
DIGIKEY WORLDWIDE 1114 1 Order Now
RS COMPONENTS EUROPE 120 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

1114

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

120

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.2955 / 1k
LD1117AV33 Available at 4 distributors

Distributor availability ofLD1117AV33

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11984 1 Order Now
RS COMPONENTS EUROPE 450 10 Order Now
Newark Element14 AMERICA 101 0 Order Now
Farnell Element14 EUROPE 1316 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

11984

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

450

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

101

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1316

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
Active
EAR99 NEC Tube TO-220 0 125 CHINA 0.2426 / 1k
LD1117AS12TR Available at 2 distributors

Distributor availability ofLD1117AS12TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 7075 1 Order Now
Farnell Element14 EUROPE 3623 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

RS COMPONENTS

Stock

7075

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

3623

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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 1913 1 Order Now
Farnell Element14 EUROPE 3514 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

1913

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3514

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK 0 125 CHINA 0.3197 / 1k
LD1117AS18TR Available at 4 distributors

Distributor availability ofLD1117AS18TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5813 1 Order Now
RS COMPONENTS EUROPE 3950 1 Order Now
Farnell Element14 EUROPE 5438 1 Order Now
ANGLIA Live EUROPE 5 2500 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

5813

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3950

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

5438

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 0 125 CHINA 0.2139 / 1k
LD1117AS33TR Available at 5 distributors

Distributor availability ofLD1117AS33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6633 1 Order Now
RS COMPONENTS EUROPE 7996 25 Order Now
FUTURE WORLDWIDE 589 1 Order Now
Newark Element14 AMERICA 730 0 Order Now
Farnell Element14 EUROPE 3018 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

6633

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7996

Min.Order

25

Region

EUROPE Order Now

FUTURE

Stock

589

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

730

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

3018

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

Buy Direct
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
RS COMPONENTS EUROPE 190 10 Order Now
Farnell Element14 EUROPE 1644 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

RS COMPONENTS

Stock

190

Min.Order

10

Region

EUROPE Order Now

Farnell Element14

Stock

1644

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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
DIGIKEY WORLDWIDE 278 1 Order Now
RS COMPONENTS EUROPE 4870 10 Order Now
Newark Element14 AMERICA 914 0 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

278

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4870

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

914

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2021-07-24

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
DIGIKEY WORLDWIDE 5156 1 Order Now
RS COMPONENTS EUROPE 5180 1 Order Now
Newark Element14 AMERICA 182 0 Order Now
Farnell Element14 EUROPE 918 1 Order Now
ANGLIA Live EUROPE 30 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

5156

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

5180

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

182

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

918

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

30

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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
DIGIKEY WORLDWIDE 1114 1 Order Now
RS COMPONENTS EUROPE 120 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

1114

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

120

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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 11984 1 Order Now
RS COMPONENTS EUROPE 450 10 Order Now
Newark Element14 AMERICA 101 0 Order Now
Farnell Element14 EUROPE 1316 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

11984

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

450

Min.Order

10

Region

EUROPE Order Now

Newark Element14

Stock

101

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1316

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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 7075 1 Order Now
Farnell Element14 EUROPE 3623 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

RS COMPONENTS

Stock

7075

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

3623

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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 1913 1 Order Now
Farnell Element14 EUROPE 3514 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

1913

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3514

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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 5813 1 Order Now
RS COMPONENTS EUROPE 3950 1 Order Now
Farnell Element14 EUROPE 5438 1 Order Now
ANGLIA Live EUROPE 5 2500 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

5813

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3950

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

5438

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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
DIGIKEY WORLDWIDE 6633 1 Order Now
RS COMPONENTS EUROPE 7996 25 Order Now
FUTURE WORLDWIDE 589 1 Order Now
Newark Element14 AMERICA 730 0 Order Now
Farnell Element14 EUROPE 3018 1 Order Now

Distributor reported inventory date: 2021-07-24

Distributor Name

DIGIKEY

Stock

6633

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7996

Min.Order

25

Region

EUROPE Order Now

FUTURE

Stock

589

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

730

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

3018

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-24

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