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  • The STLQ50 is a BiCMOS linear regulator specifically designed for operating in environments where very low power consumption is required.

    Its very low quiescent current (3 μA) results in extended battery life, making the device suitable for applications which have very long standby time.
    The PMOS pass element allows very good dropout values (200 mV at 25 mA IO and 350 mV at full load) without affecting the consumption characteristics.
    Housed in the very small SOT323-5L, it meets space-saving requirements in battery-powered equipment.

    Key Features

    • 2.3 V to 12 V input voltage range
    • 50 mA maximum output current
    • 3 μA quiescent current
    • Available in 1.8 V, 2.5 V, 3.3 V, 5.0 V and adjustable voltage
    • 200 mV dropout voltage at 25 mA output current
    • Internal thermal protection
    • Available in SOT323-5L package

Circuit Diagram

Download Download

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
STLQ50C25R SOT323-5L Tape And Reel 2.5 2 0.05
Active
0.298 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTLQ50C25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2890 1 Order Now
MOUSER WORLDWIDE 1054 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

2890

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1054

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-13

Buy now
STLQ50C-R SOT323-5L Tape And Reel - 2 0.05
Active
0.298 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTLQ50C-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3991 1 Order Now
Newark Element14 AMERICA 718 0 Order Now
MOUSER WORLDWIDE 5111 1 Order Now
Farnell Element14 EUROPE 1044 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

3991

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

718

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5111

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1044

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Buy now
STLQ50C18R SOT323-5L Tape And Reel 1.8 2 0.05
Active
0.298 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTLQ50C18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2000 1 Order Now
ANGLIA Live EUROPE 2930 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

MOUSER

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

2930

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Buy now
STLQ50C50R SOT323-5L Tape And Reel 5 2 0.05
Active
0.298 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTLQ50C50R

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 2257 1 Order Now
MOUSER WORLDWIDE 2712 1 Order Now
Farnell Element14 EUROPE 6000 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

ARROW

Stock

2257

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

2712

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Buy now
STLQ50C33R SOT323-5L Tape And Reel 3.3 2 0.05
Active
0.298 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTLQ50C33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15444 1 Order Now
ARROW EUROPE 195000 0 Order Now
Newark Element14 AMERICA 6280 0 Order Now
ARROW AMERICA 37 1 Order Now
MOUSER WORLDWIDE 5777 1 Order Now
Farnell Element14 EUROPE 1573 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

15444

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

195000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

6280

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

37

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

5777

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1573

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Buy now

STLQ50C25R

Package

SOT323-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.298*

Distributor availability ofSTLQ50C25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2890 1 Order Now
MOUSER WORLDWIDE 1054 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

2890

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1054

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-13

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Marketing Status

Active

Unit Price (US$)

0.298

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STLQ50C-R

Package

SOT323-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.298*

Distributor availability ofSTLQ50C-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3991 1 Order Now
Newark Element14 AMERICA 718 0 Order Now
MOUSER WORLDWIDE 5111 1 Order Now
Farnell Element14 EUROPE 1044 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

3991

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

718

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5111

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1044

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Marketing Status

Active

Unit Price (US$)

0.298

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STLQ50C18R

Package

SOT323-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.298*

Distributor availability ofSTLQ50C18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2000 1 Order Now
ANGLIA Live EUROPE 2930 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

MOUSER

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

2930

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Marketing Status

Active

Unit Price (US$)

0.298

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STLQ50C50R

Package

SOT323-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.298*

Distributor availability ofSTLQ50C50R

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 2257 1 Order Now
MOUSER WORLDWIDE 2712 1 Order Now
Farnell Element14 EUROPE 6000 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

ARROW

Stock

2257

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

2712

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Marketing Status

Active

Unit Price (US$)

0.298

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STLQ50C33R

Package

SOT323-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.298*

Distributor availability ofSTLQ50C33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15444 1 Order Now
ARROW EUROPE 195000 0 Order Now
Newark Element14 AMERICA 6280 0 Order Now
ARROW AMERICA 37 1 Order Now
MOUSER WORLDWIDE 5777 1 Order Now
Farnell Element14 EUROPE 1573 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

15444

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

195000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

6280

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

37

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

5777

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1573

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-13

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Marketing Status

Active

Unit Price (US$)

0.298

Quantity

10000

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

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      50 mA, 3 µA supply current low drop linear regulator

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      Linear and Switching Voltage Regulators Selection Guide 3.0
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      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**
STLQ50C-R
Active
SOT323-5L Industrial Ecopack2
STLQ50C18R
Active
SOT323-5L Industrial Ecopack2
STLQ50C25R
Active
SOT323-5L Industrial Ecopack2
STLQ50C33R
Active
SOT323-5L Industrial Ecopack2
STLQ50C50R
Active
SOT323-5L Industrial Ecopack2

STLQ50C-R

Package:

SOT323-5L

Material Declaration**:

Marketing Status

Active

Package

SOT323-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STLQ50C18R

Package:

SOT323-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT323-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STLQ50C25R

Package:

SOT323-5L

Material Declaration**:

Marketing Status

Active

Package

SOT323-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STLQ50C33R

Package:

SOT323-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT323-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STLQ50C50R

Package:

SOT323-5L

Material Declaration**:

Marketing Status

Active

Package

SOT323-5L

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.