LK112S

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Low noise and low drop voltage regulator with shutdown function

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  • The LK112S is a low-dropout linear regulator with shutdown function. The internal switch can be controlled by TTL or CMOS logic levels. The device is ON when the control pin is pulled to a high logic level. An external capacitor can be connected to the noise bypass pin to reduce the output noise level to 30 μVrms. An internal PNP pass transistor is used to achieve a low-dropout voltage.

    The LK112S has a very low quiescent current in ON mode while in OFF mode the Iqis reduced to 100 nA max. The internal thermal shutdown circuitry limits the junction temperature below 150 °C. The load current is internally monitored and in the presence of a short-circuit or overcurrent conditions at the output, the device shuts down.

    Key Features

    • Output current up to 200 mA
    • Low-dropout voltage (500 mV max. at IOUT = 200 mA)
    • Very low quiescent current: 0.1 μA in OFF mode and max. 250 μA in ON mode at IOUT = 0 mA
    • Low output noise: typ. 30 μV at IOUT = 60 mA and 10 Hz < f < 80 kHz
    • Wide range of output voltages
    • Internal current and thermal limit
    • VOUT tolerance ± 2% (at 25 °C)
    • Operative input voltage from: VOUT + 0.5 to 14 V (for VOUT > 2 V) or from 2.5 V to 14 V (for VOUT < 2 V)

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Part Number
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
Budgetary Price (US$)*
Quantity
More info
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LK112SM50TR SOT23-5L Tape And Reel 5 2 0.2
Active
0.24 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112SM50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4885 1 Order Now
RS COMPONENTS EUROPE 1685 5 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
MOUSER WORLDWIDE 3028 1 Order Now
Farnell Element14 EUROPE 868 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

4885

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1685

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

MOUSER

Stock

3028

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

868

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Buy now
LK112SM18TR SOT23-5L Tape And Reel 1.8 2 0.2
Active
0.24 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112SM18TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1307 1 Order Now
Farnell Element14 EUROPE 2426 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

MOUSER

Stock

1307

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2426

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Buy now
LK112SM33TR SOT23-5L Tape And Reel 3.3 2 0.2
Active
0.24 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLK112SM33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 16458 1 Order Now
RS COMPONENTS EUROPE 2775 1 Order Now
FUTURE WORLDWIDE 5700 1 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 4360 1 Order Now
Farnell Element14 EUROPE 1894 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

16458

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2775

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

5700

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

4360

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1894

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Buy now

LK112SM50TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.24*

Distributor availability ofLK112SM50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4885 1 Order Now
RS COMPONENTS EUROPE 1685 5 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
MOUSER WORLDWIDE 3028 1 Order Now
Farnell Element14 EUROPE 868 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

4885

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1685

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

MOUSER

Stock

3028

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

868

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Unit Price (US$)

0.24

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112SM18TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.24*

Distributor availability ofLK112SM18TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1307 1 Order Now
Farnell Element14 EUROPE 2426 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

MOUSER

Stock

1307

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2426

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Unit Price (US$)

0.24

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112SM33TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.24*

Distributor availability ofLK112SM33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 16458 1 Order Now
RS COMPONENTS EUROPE 2775 1 Order Now
FUTURE WORLDWIDE 5700 1 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 4360 1 Order Now
Farnell Element14 EUROPE 1894 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

16458

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2775

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

5700

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

4360

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1894

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Unit Price (US$)

0.24

Quantity

10000

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

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      Low noise and low drop voltage regulator with shutdown function
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      Low noise and low drop voltage regulator with shutdown function

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LK112SM18TR
Active
SOT23-5L Industrial Ecopack2
LK112SM33TR
Active
SOT23-5L Industrial Ecopack2
LK112SM50TR
Active
SOT23-5L Industrial Ecopack2

LK112SM18TR

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112SM33TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112SM50TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

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.

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