1.2 A High PSRR low dropout linear voltage regulator

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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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Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
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LDL1117S50R SOT-223 Tape And Reel 3 1 1.2
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0.15 1000
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EAR99

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LDL1117S15R SOT-223 Tape And Reel 1.5 1 1.2
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0.15 1000
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EAR99

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LDL1117S33R SOT-223 Tape And Reel 3.3 1 1.2
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0.15 1000
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EAR99

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LDL1117S30R SOT-223 Tape And Reel 3 1 1.2
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LDL1117S12R SOT-223 Tape And Reel 1.185 1 1.2
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0.15 1000
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LDL1117S25R SOT-223 Tape And Reel 2.5 1 1.2
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0.15 1000
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LDL1117S18R SOT-223 Tape And Reel 1.8 1 1.2
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0.15 1000
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LDL1117S50R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11567 1 Order Now
ARROW EUROPE 881 0 Order Now
MOUSER WORLDWIDE 12760 1 Order Now
Farnell Element14 EUROPE 585 1 Order Now

Distributor reported inventory date: 2019-05-17

Distributor Name

DIGIKEY

Stock

11567

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

881

Min.Order

0

Region

EUROPE Order Now

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Stock

12760

Min.Order

1

Region

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Farnell Element14

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585

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S15R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S15R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8145 1 Order Now
RS COMPONENTS EUROPE 4940 1 Order Now
AVNET AMERICA 5000 0 Order Now
ARROW EUROPE 19895 0 Order Now
MOUSER WORLDWIDE 2184 1 Order Now
Farnell Element14 EUROPE 348 1 Order Now

Distributor reported inventory date: 2019-05-17

Distributor Name

DIGIKEY

Stock

8145

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4940

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

19895

Min.Order

0

Region

EUROPE Order Now

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Stock

2184

Min.Order

1

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WORLDWIDE Order Now

Farnell Element14

Stock

348

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1

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

1.5

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S33R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1716 1 Order Now
FUTURE WORLDWIDE 10193 1 Order Now
ARROW EUROPE 8800 0 Order Now
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Farnell Element14 EUROPE 333 1 Order Now

Distributor reported inventory date: 2019-05-17

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DIGIKEY

Stock

1716

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1

Region

WORLDWIDE Order Now

FUTURE

Stock

10193

Min.Order

1

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WORLDWIDE Order Now

ARROW

Stock

8800

Min.Order

0

Region

EUROPE Order Now

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Stock

23672

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

333

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1

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S30R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7646 1 Order Now
RS COMPONENTS EUROPE 4120 1 Order Now
ARROW EUROPE 20000 0 Order Now
MOUSER WORLDWIDE 7832 1 Order Now
Farnell Element14 EUROPE 75 1 Order Now

Distributor reported inventory date: 2019-05-17

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Stock

7646

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1

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WORLDWIDE Order Now

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Stock

4120

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

20000

Min.Order

0

Region

EUROPE Order Now

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Stock

7832

Min.Order

1

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Farnell Element14

Stock

75

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1

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

3

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S12R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S12R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2346 1 Order Now
RS COMPONENTS EUROPE 5000 1 Order Now
ARROW EUROPE 20000 0 Order Now
MOUSER WORLDWIDE 1454 1 Order Now
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Distributor reported inventory date: 2019-05-17

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Stock

2346

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1

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Stock

5000

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Stock

20000

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Stock

1454

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Stock

8

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

1.185

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S25R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6072 1 Order Now
RS COMPONENTS EUROPE 4900 1 Order Now
ARROW EUROPE 20000 0 Order Now
MOUSER WORLDWIDE 6631 1 Order Now
Farnell Element14 EUROPE 116 1 Order Now

Distributor reported inventory date: 2019-05-17

Distributor Name

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Stock

6072

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1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4900

Min.Order

1

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Stock

20000

Min.Order

0

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EUROPE Order Now

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Stock

6631

Min.Order

1

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WORLDWIDE Order Now

Farnell Element14

Stock

116

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1

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LDL1117S18R

Package

SOT-223

Packing Type

Tape And Reel

Unit Price (US$)

0.15*

Distributor availability ofLDL1117S18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1487 1 Order Now
RS COMPONENTS EUROPE 4900 1 Order Now
FUTURE WORLDWIDE 20000 2500 Order Now
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MOUSER WORLDWIDE 7650 1 Order Now
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Distributor reported inventory date: 2019-05-17

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Stock

1487

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1

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WORLDWIDE Order Now

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Stock

4900

Min.Order

1

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FUTURE

Stock

20000

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2500

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20000

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Stock

7650

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32

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Distributor reported inventory date: 2019-05-17

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

1

Output Current (A) (nom)

1.2

Marketing Status

Active

Unit Price (US$)

0.15

Quantity

1000

ECCN (US)

EAR99

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

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12022
      1.2 A high PSRR low-dropout linear voltage regulator
      3.0
      1.61 MB
      PDF
      DS12022

      1.2 A high PSRR low-dropout linear voltage regulator

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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**:

Marketing Status

Active

Package

SOT-223

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDL1117S15R

Package:

SOT-223

Material Declaration**:

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.