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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

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Technical Documentation

    • Description Version Size Action
      DS5107
      50 mA, 3 µA supply current low drop linear regulator
      7.0
      456.1 KB
      PDF
      DS5107

      50 mA, 3 µA supply current low drop linear regulator

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
      Low-dropout (LDO) linear voltage regulators Quick Reference Guide 2.1
      1.78 MB
      PDF
      Power management for handheld and portable 2.0
      1.09 MB
      PDF

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

      Power management for handheld and portable

Quality and Reliability

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
STLQ50C25R Available at 2 distributors

Distributor availability ofSTLQ50C25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 604 1 Order Now
MOUSER WORLDWIDE 1689 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

604

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1689

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-22

Buy now
Active
EAR99 NEC Tape And Reel SOT323-5L -40 150 2.5 0.298 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.05

Unit Price (US$):

0.298

Country of Origin:

MALAYSIA

STLQ50C-R Available at 6 distributors

Distributor availability ofSTLQ50C-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4816 1 Order Now
COMPEL EUROPE 2 1 Order Now
Newark Element14 AMERICA 652 0 Order Now
MOUSER WORLDWIDE 1328 1 Order Now
Farnell Element14 EUROPE 283 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

4816

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

652

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1328

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

283

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

Buy now
Active
EAR99 NEC Tape And Reel SOT323-5L -40 150 - 0.298 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.05

Unit Price (US$):

0.298

Country of Origin:

MALAYSIA

STLQ50C18R Available at 2 distributors

Distributor availability ofSTLQ50C18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 789 1 Order Now
ANGLIA Live EUROPE 2930 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

MOUSER

Stock

789

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

2930

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

Buy now
Active
EAR99 NEC Tape And Reel SOT323-5L -40 150 1.8 0.298 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.05

Unit Price (US$):

0.298

Country of Origin:

MALAYSIA

STLQ50C50R Available at 3 distributors

Distributor availability ofSTLQ50C50R

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 2153 1 Order Now
Farnell Element14 EUROPE 5925 1 Order Now
ANGLIA Live EUROPE 2400 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

ARROW

Stock

2153

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

5925

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2400

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

Buy now
Active
EAR99 NEC Tape And Reel SOT323-5L -40 150 5 0.298 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.05

Unit Price (US$):

0.298

Country of Origin:

MALAYSIA

STLQ50C33R Available at 7 distributors

Distributor availability ofSTLQ50C33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5754 1 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
ARROW EUROPE 72000 0 Order Now
Newark Element14 AMERICA 55 0 Order Now
ARROW AMERICA 42010 1 Order Now
MOUSER WORLDWIDE 4394 1 Order Now
Farnell Element14 EUROPE 1714 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

5754

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

72000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

55

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

42010

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

4394

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1714

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

Buy now
Active
EAR99 NEC Tape And Reel SOT323-5L -40 150 3.3 0.298 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.05

Unit Price (US$):

0.298

Country of Origin:

MALAYSIA

STLQ50C25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.298 / 1k

Distributor availability ofSTLQ50C25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 604 1 Order Now
MOUSER WORLDWIDE 1689 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

604

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1689

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-22

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT323-5L

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Budgetary Price (US$)* / Qty

0.298 / 1k

Country of Origin

MALAYSIA

STLQ50C-R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.298 / 1k

Distributor availability ofSTLQ50C-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4816 1 Order Now
COMPEL EUROPE 2 1 Order Now
Newark Element14 AMERICA 652 0 Order Now
MOUSER WORLDWIDE 1328 1 Order Now
Farnell Element14 EUROPE 283 1 Order Now
ANGLIA Live EUROPE 3000 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

4816

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

652

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1328

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

283

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT323-5L

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Budgetary Price (US$)* / Qty

0.298 / 1k

Country of Origin

MALAYSIA

STLQ50C18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.298 / 1k

Distributor availability ofSTLQ50C18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 789 1 Order Now
ANGLIA Live EUROPE 2930 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

MOUSER

Stock

789

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

2930

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT323-5L

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Budgetary Price (US$)* / Qty

0.298 / 1k

Country of Origin

MALAYSIA

STLQ50C50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.298 / 1k

Distributor availability ofSTLQ50C50R

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 2153 1 Order Now
Farnell Element14 EUROPE 5925 1 Order Now
ANGLIA Live EUROPE 2400 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

ARROW

Stock

2153

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

5925

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2400

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT323-5L

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Budgetary Price (US$)* / Qty

0.298 / 1k

Country of Origin

MALAYSIA

STLQ50C33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.298 / 1k

Distributor availability ofSTLQ50C33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5754 1 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
ARROW EUROPE 72000 0 Order Now
Newark Element14 AMERICA 55 0 Order Now
ARROW AMERICA 42010 1 Order Now
MOUSER WORLDWIDE 4394 1 Order Now
Farnell Element14 EUROPE 1714 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

DIGIKEY

Stock

5754

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

72000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

55

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

42010

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

4394

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1714

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT323-5L

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.05

Budgetary Price (US$)* / Qty

0.298 / 1k

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