ST1L05

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Very low quiescent BiCMOS voltage regulator

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Product overview

Description

The ST1L05 is a low drop linear voltage regulator, which supplies up to 1.3 A output current. The output voltage is fixed at 1.8 V, 2.5 V, 3.3 V and it is adjustable. It is available in three different versions with different pinouts.
Thanks to BiCMOS technology, the quiescent current is controlled and maintained below 650 μA over the entire allowed junction temperature range. The ST1L05 is stable with low ESR output ceramic capacitors.
Internal protection circuitry includes thermal protection with hysteresis and overcurrent limiting.
The ST1L05 is suitable for data storage applications such as HDDs, where it can supply 3.3 V required by read channel and memory chips.
The regulator is available in the small and thin DFN6 (3x3 mm) and DFN8 (4x4 mm) packages.
  • All features

    • Fixed output voltage: 1.8 V, 2.5 V, 3.3 V and ADJ
    • Output voltage tolerance: ± 2% at 25 °C
    • Output current capability: 1.3 A
    • Very low quiescent current: max. 650 μA
    • Typ. dropout 0.3 V (@ IO = 1.3 A)
    • Enable function for B, C and D versions
    • Power Good function for B and D versions
    • Stable with low ESR ceramic capacitors
    • Thermal shutdown protection with hysteresis
    • Overcurrent protection
    • Operating junction temperature range: from 0 to 125 °C

Circuit Diagram

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STMicroelectronics - ST1L05

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3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1L05APU33R
Active
DFN6 3x3 Industrial Ecopack2
ST1L05BPUR
Active
DFN6 3x3 Industrial Ecopack2
ST1L05CPU33R
Active
DFN6 3x3 Industrial Ecopack2
ST1L05DPUR
Active
DFN8 4x4 Industrial Ecopack2
ST1L05PU25R
Active
DFN6 3x3 Industrial Ecopack2

ST1L05APU33R

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1L05BPUR

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1L05CPU33R

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1L05DPUR

Package:

DFN8 4x4

Material Declaration**:

Marketing Status

Active

Package

DFN8 4x4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1L05PU25R

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

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
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
Output Tolerance (typ)
Output Current (A) (nom)
Unit Price (US$)
Country of Origin
min
max
ST1L05BPUR Available at 1 distributors

Distributor availability ofST1L05BPUR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 3300 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

MOUSER

Stock

3300

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

Active
EAR99 NEC Tape and Reel DFN6 3x3 0 125 -

2

1.3

0.3696

MALAYSIA

ST1L05CPU33R No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel DFN6 3x3 0 125 3.3

2

1.3

0.3696

MALAYSIA

ST1L05APU33R Available at 1 distributors

Distributor availability ofST1L05APU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5920 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

DIGIKEY

Stock

5920

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

Active
EAR99 NEC Tape and Reel DFN6 3x3 0 125 3.3

2

1.3

0.3696

MALAYSIA

ST1L05DPUR Available at 1 distributors

Distributor availability ofST1L05DPUR

Distributor Name
Region Stock Min. Order Third party link
ANGLIA Live EUROPE 4500 1 Buy from Distributor

Distributor reported inventory date: 2022-06-21

Distributor Name

ANGLIA Live

Stock

4500

Min.Order

1

Distributor reported inventory date: 2022-06-21

Active
EAR99 NEC Tape and Reel DFN8 4x4 0 125 -

2

1.3

0.3696

MALAYSIA

ST1L05PU25R Available at 1 distributors

Distributor availability ofST1L05PU25R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1343 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

MOUSER

Stock

1343

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

Active
EAR99 NEC Tape and Reel DFN6 3x3 0 125 2.5

2

1.3

0.3696

MALAYSIA

ST1L05BPUR Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST1L05BPUR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

0

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

1.3

Country of Origin:

MALAYSIA

Distributor availability ofST1L05BPUR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 3300 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

MOUSER

Stock

3300

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

ST1L05CPU33R Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST1L05CPU33R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

0

Max:

125

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

2

Output Current (A) (nom):

1.3

Country of Origin:

MALAYSIA

No availability of distributors reported, please contact our sales office

ST1L05APU33R Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST1L05APU33R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

0

Max:

125

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

2

Output Current (A) (nom):

1.3

Country of Origin:

MALAYSIA

Distributor availability ofST1L05APU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5920 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

DIGIKEY

Stock

5920

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

ST1L05DPUR Active

Package:
DFN8 4x4
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST1L05DPUR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

0

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

1.3

Country of Origin:

MALAYSIA

Distributor availability ofST1L05DPUR

Distributor Name
Region Stock Min. Order Third party link
ANGLIA Live EUROPE 4500 1 Buy from Distributor

Distributor reported inventory date: 2022-06-21

Distributor Name

ANGLIA Live

Stock

4500

Min.Order

1

Distributor reported inventory date: 2022-06-21

ST1L05PU25R Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

ST1L05PU25R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

0

Max:

125

Output Voltage (V) (nom):

2.5

Output Tolerance (typ):

2

Output Current (A) (nom):

1.3

Country of Origin:

MALAYSIA

Distributor availability ofST1L05PU25R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1343 1 Buy from Distributor

Distributor reported inventory date: 2022-06-22

Distributor Name

MOUSER

Stock

1343

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-06-22

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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