Low noise and low drop voltage regulator with shutdown function

Download datasheet

This product is in stock in our e-store

Sample and buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The LK112 is a low-dropout linear regulator with a built-in electronic switch. The internal switch can be controlled by TTL or CMOS logic levels. The device is on-state when the control pin is pulled to a logic high 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 LK112 has a very low quiescent current in on mode while in off mode Iqis reduced below 100 nA max. The internal thermal shutdown circuitry limits the junction temperature below 150 °C. Load current is internally monitored and the device shuts down in the presence of a short-circuit or overcurrent condition on the output.

    Key Features

    • Output current up to 150 mA
    • Low-dropout voltage (350 mV at IOUT= 150 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
    • 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)

Sample & Buy

Part Number
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
Budgetary Price (US$)*
Quantity
More info
Order from Distributors
Order from ST
LK112M33TR SOT23-5L Tape And Reel 3.3 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLK112M33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8437 1 Order Now
ARROW EUROPE 9000 0 Order Now
MOUSER WORLDWIDE 8266 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

8437

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

8266

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M50TR SOT23-5L Tape And Reel 5 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112M50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7934 1 Order Now
RS COMPONENTS EUROPE 360 10 Order Now
MOUSER WORLDWIDE 3864 1 Order Now
Farnell Element14 EUROPE 2255 1 Order Now
RUTRONIK EUROPE 2017 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

7934

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

360

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

3864

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2255

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2017

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-26

LK112M80TR SOT23-5L Tape And Reel 8 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112M80TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2820 1 Order Now
RS COMPONENTS EUROPE 1700 10 Order Now
MOUSER WORLDWIDE 4607 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

2820

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1700

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

4607

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M60TR SOT23-5L Tape And Reel 6 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112M60TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2340 1 Order Now
MOUSER WORLDWIDE 2995 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

RS COMPONENTS

Stock

2340

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

2995

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M15TR SOT23-5L Tape And Reel 1.5 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112M15TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20739 1 Order Now
MOUSER WORLDWIDE 6000 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

20739

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

6000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M25TR SOT23-5L Tape And Reel 2.5 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLK112M25TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5380 1 Order Now
MOUSER WORLDWIDE 5990 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

5380

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

5990

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M18TR SOT23-5L Tape And Reel 1.8 2 0.15
Active
0.161 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLK112M18TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6793 1 Order Now
AVNET AMERICA 3000 0 Order Now
MOUSER WORLDWIDE 5892 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

6793

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5892

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

LK112M33TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M33TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8437 1 Order Now
ARROW EUROPE 9000 0 Order Now
MOUSER WORLDWIDE 8266 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

8437

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

8266

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LK112M50TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M50TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7934 1 Order Now
RS COMPONENTS EUROPE 360 10 Order Now
MOUSER WORLDWIDE 3864 1 Order Now
Farnell Element14 EUROPE 2255 1 Order Now
RUTRONIK EUROPE 2017 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

7934

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

360

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

3864

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2255

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2017

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112M80TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M80TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2820 1 Order Now
RS COMPONENTS EUROPE 1700 10 Order Now
MOUSER WORLDWIDE 4607 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

2820

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1700

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

4607

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112M60TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M60TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2340 1 Order Now
MOUSER WORLDWIDE 2995 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

RS COMPONENTS

Stock

2340

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

2995

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

6

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112M15TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M15TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20739 1 Order Now
MOUSER WORLDWIDE 6000 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

20739

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

6000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

1.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LK112M25TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M25TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5380 1 Order Now
MOUSER WORLDWIDE 5990 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

5380

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

5990

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LK112M18TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.161*

Distributor availability ofLK112M18TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6793 1 Order Now
AVNET AMERICA 3000 0 Order Now
MOUSER WORLDWIDE 5892 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

6793

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5892

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.161

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

Recommended for you

Related Applications

Smart Farming

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS2041
      Low noise low drop voltage regulator with shutdown function
      17.0
      362.64 KB
      PDF
      DS2041

      Low noise low drop voltage regulator with shutdown function

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      Brochure Power management guide 10.2018
      4.42 MB
      PDF
      Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.0
      216.23 KB
      PDF
      Power management for handheld and portable 2.0
      1.09 MB
      PDF

      Brochure Power management guide

      Low-dropout (LDO) linear voltage regulators - Quick Reference Guide

      Power management for handheld and portable

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LK112M15TR
Active
SOT23-5L Industrial Ecopack2
LK112M18TR
Active
SOT23-5L Industrial Ecopack2
LK112M25TR
Active
SOT23-5L Industrial Ecopack2
LK112M33TR
Active
SOT23-5L Industrial Ecopack2
LK112M50TR
Active
SOT23-5L Industrial Ecopack2
LK112M60TR
Active
SOT23-5L Industrial Ecopack2
LK112M80TR
Active
SOT23-5L Industrial Ecopack2

LK112M15TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M18TR

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M25TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M33TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M50TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M60TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LK112M80TR

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.