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
ECCN (US)
More info
Budgetary Price (US$)*/Qty
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LK112SM50TR SOT23-5L Tape And Reel 5 2 0.2
Active
EAR99
MORE INFO

Country of Origin:

MALAYSIA

0.24 / 1k Buy now Check Availability

Distributor availability ofLK112SM50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4881 1 Order Now
RS COMPONENTS EUROPE 655 5 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 3013 1 Order Now
Farnell Element14 EUROPE 3332 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

4881

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

655

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3013

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3332

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

LK112SM18TR SOT23-5L Tape And Reel 1.8 2 0.2
Active
EAR99
MORE INFO

Country of Origin:

MALAYSIA

0.24 / 1k Buy now Check Availability

Distributor availability ofLK112SM18TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2885 1 Order Now
Farnell Element14 EUROPE 1576 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

MOUSER

Stock

2885

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1576

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

LK112SM33TR SOT23-5L Tape And Reel 3.3 2 0.2
Active
EAR99
MORE INFO

Country of Origin:

CHINA

0.24 / 1k Buy now Check Availability

Distributor availability ofLK112SM33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15256 1 Order Now
RS COMPONENTS EUROPE 1925 1 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 3315 1 Order Now
Farnell Element14 EUROPE 578 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

15256

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1925

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3315

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

578

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

LK112SM50TR

Package

SOT23-5L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLK112SM50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4881 1 Order Now
RS COMPONENTS EUROPE 655 5 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 3013 1 Order Now
Farnell Element14 EUROPE 3332 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

4881

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

655

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3013

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3332

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112SM18TR

Package

SOT23-5L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLK112SM18TR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2885 1 Order Now
Farnell Element14 EUROPE 1576 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

MOUSER

Stock

2885

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1576

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112SM33TR

Package

SOT23-5L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLK112SM33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15256 1 Order Now
RS COMPONENTS EUROPE 1925 1 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
ARROW EUROPE 6000 0 Order Now
MOUSER WORLDWIDE 3315 1 Order Now
Farnell Element14 EUROPE 578 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

15256

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1925

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3315

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

578

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.2

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

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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      DS2395
      Low noise and low drop voltage regulator with shutdown function
      12.0
      352.55 KB
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      Low noise and low drop voltage regulator with shutdown function

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      Linear and Switching Voltage Regulators Selection Guide 3.0
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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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