LK112

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Low noise and low drop voltage regulator with shutdown function

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Product overview

Description

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.

  • All 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)

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LK112

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Quality and Reliability

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.

Sample & Buy

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Part Number
Marketing Status
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Package
Packing Type
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ECCN (US)
ECCN (EU)
Temperature (°C)
Grade
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
min
max
LK112M33TR
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Distributor availability of LK112M33TR

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LK112M50TR
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LK112M80TR
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LK112M60TR
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LK112M15TR
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LK112M25TR
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LK112M18TR
Available at distributors

Distributor availability of LK112M18TR

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LK112M33TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M33TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M50TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M50TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

5

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M80TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M80TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

8

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M60TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M60TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

6

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M15TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M15TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

1.5

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M25TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M25TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

2.5

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

LK112M18TR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LK112M18TR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

1.8

Output Tolerance (typ):

2

Output Current (A) (nom):

0.15

Distributor Name

Distributor reported inventory date:

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