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  • The LDL1117 provides 1.2 A of maximum current with an input voltage range from 2.5 V to 18 V, and a typical dropout voltage of 350 mV @ 1.2 A.

    The high power supply rejection ratio of 87 dB at 120 Hz, rolling down to more than 40 dB at 100 kHz, makes the LDL1117 suitable for direct regulations in SMPS and secondary linear regulations in DC-DC converters.
    This device includes current limit, SOA and thermal protections.

    Key Features

    • Input voltage from 2.5 V to 18 V
    • 20 V AMR
    • Available on fixed output voltages: 1.2 V (1.185 V), 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5.0 V (other options are available on request)
    • Guaranteed output current 1.2 A
    • Typical dropout 350 mV @ 1.2 A
    • Internal thermal, current and power limitation
    • High PSRR 87 dB @ 120 Hz
    • Operating temperature range: -40 °C to 125°C
    • Package SOT223

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDL1117S12R
Active
SOT-223 Industrial Ecopack2
LDL1117S15R
Active
SOT-223 Industrial Ecopack2
LDL1117S18R
Active
SOT-223 Industrial Ecopack2
LDL1117S25R
Active
SOT-223 Industrial Ecopack2
LDL1117S30R
Active
SOT-223 Industrial Ecopack2
LDL1117S33R
Active
SOT-223 Industrial Ecopack2
LDL1117S50R
Active
SOT-223 Industrial Ecopack2

LDL1117S12R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S15R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S18R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S25R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S30R

Package:

SOT-223

Material Declaration**:

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S33R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S50R

Package:

SOT-223

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-223

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
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Temperature (°C) Output Voltage (V) (nom)
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min
max
LDL1117S50R Available at 9 distributors

Distributor availability ofLDL1117S50R

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DIGIKEY WORLDWIDE 26677 1 Order Now
RS COMPONENTS EUROPE 7225 1 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 5000 2500 Order Now
ARROW EUROPE 9085 0 Order Now
Newark Element14 AMERICA 871 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 16891 1 Order Now
Farnell Element14 EUROPE 3894 1 Order Now

Distributor reported inventory date: 2020-10-18

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DIGIKEY

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26677

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1

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7225

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EUROPE Order Now

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5000

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0

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5000

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2500

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9085

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871

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EAR99 NEC Tape And Reel SOT-223 -40 125 3 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S15R Available at 4 distributors

Distributor availability ofLDL1117S15R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7022 1 Order Now
RS COMPONENTS EUROPE 4620 1 Order Now
AVNET AMERICA 2500 0 Order Now
Farnell Element14 EUROPE 246 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

7022

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4620

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

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0

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AMERICA Order Now

Farnell Element14

Stock

246

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 -40 125 1.5 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S33R Available at 5 distributors

Distributor availability ofLDL1117S33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7133 1 Order Now
COMPEL EUROPE 4180 1 Order Now
RS COMPONENTS EUROPE 6775 1 Order Now
AVNET AMERICA 10000 0 Order Now
Farnell Element14 EUROPE 5840 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

7133

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

4180

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6775

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

5840

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

Active
EAR99 NEC Tape And Reel SOT-223 -40 125 3.3 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S30R Available at 5 distributors

Distributor availability ofLDL1117S30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2479 1 Order Now
RS COMPONENTS EUROPE 2920 1 Order Now
Newark Element14 AMERICA 48 0 Order Now
MOUSER WORLDWIDE 454 1 Order Now
Farnell Element14 EUROPE 2607 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

2479

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2920

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

48

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

454

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2607

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 -40 125 3 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S12R Available at 3 distributors

Distributor availability ofLDL1117S12R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1815 1 Order Now
RS COMPONENTS EUROPE 4960 1 Order Now
Farnell Element14 EUROPE 12 1 Order Now

Distributor reported inventory date: 2020-10-17

Distributor Name

DIGIKEY

Stock

1815

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4960

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

12

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-17

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 -40 125 1.185 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S25R Available at 4 distributors

Distributor availability ofLDL1117S25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3072 1 Order Now
RS COMPONENTS EUROPE 4020 1 Order Now
MOUSER WORLDWIDE 4933 1 Order Now
Farnell Element14 EUROPE 4213 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

3072

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4020

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

4933

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4213

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 -40 125 2.5 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S18R Available at 6 distributors

Distributor availability ofLDL1117S18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 811 1 Order Now
RS COMPONENTS EUROPE 4760 1 Order Now
AVNET AMERICA 7500 0 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
ARROW EUROPE 12500 0 Order Now
MOUSER WORLDWIDE 6927 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

811

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4760

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6927

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-18

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SOT-223 -40 125 1.8 0.15 / 1k
MORE INFO

Output Tolerance (typ):

1

Output Current (A) (nom):

1.2

Unit Price (US$):

0.15

Country of Origin:

CHINA

LDL1117S50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 26677 1 Order Now
RS COMPONENTS EUROPE 7225 1 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 5000 2500 Order Now
ARROW EUROPE 9085 0 Order Now
Newark Element14 AMERICA 871 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 16891 1 Order Now
Farnell Element14 EUROPE 3894 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

26677

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7225

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

5000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

9085

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

871

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

16891

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3894

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S15R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S15R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7022 1 Order Now
RS COMPONENTS EUROPE 4620 1 Order Now
AVNET AMERICA 2500 0 Order Now
Farnell Element14 EUROPE 246 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

7022

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4620

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

246

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.5

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7133 1 Order Now
COMPEL EUROPE 4180 1 Order Now
RS COMPONENTS EUROPE 6775 1 Order Now
AVNET AMERICA 10000 0 Order Now
Farnell Element14 EUROPE 5840 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

7133

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

4180

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6775

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

5840

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S30R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2479 1 Order Now
RS COMPONENTS EUROPE 2920 1 Order Now
Newark Element14 AMERICA 48 0 Order Now
MOUSER WORLDWIDE 454 1 Order Now
Farnell Element14 EUROPE 2607 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

2479

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2920

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

48

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

454

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2607

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S12R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S12R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1815 1 Order Now
RS COMPONENTS EUROPE 4960 1 Order Now
Farnell Element14 EUROPE 12 1 Order Now

Distributor reported inventory date: 2020-10-17

Distributor Name

DIGIKEY

Stock

1815

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4960

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

12

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-17

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.185

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3072 1 Order Now
RS COMPONENTS EUROPE 4020 1 Order Now
MOUSER WORLDWIDE 4933 1 Order Now
Farnell Element14 EUROPE 4213 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

3072

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4020

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

4933

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4213

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

LDL1117S18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.15 / 1k

Distributor availability ofLDL1117S18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 811 1 Order Now
RS COMPONENTS EUROPE 4760 1 Order Now
AVNET AMERICA 7500 0 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
ARROW EUROPE 12500 0 Order Now
MOUSER WORLDWIDE 6927 1 Order Now

Distributor reported inventory date: 2020-10-18

Distributor Name

DIGIKEY

Stock

811

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4760

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

12500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6927

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-223

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Budgetary Price (US$)* / Qty

0.15 / 1k

Country of Origin

CHINA

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