Very low drop and low noise voltage regulator with inhibit function

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  • The LD2985 is a 150 mA fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1 μA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. An external capacitor, CBYP= 10 nF, connected between bypass pin and GND reduces the noise to 30 μVrms. Typical application are in cellular phone, palmtop laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera.

    Key Features

    • Very low dropout voltage (280 mV at 150 mA and 7 mV at 1 mA load)
    • Very low quiescent current (2 mA typ. at 150 mA load and 80 μA at no load)
    • Output current up to 150 mA
    • Logic controlled electronic shutdown
    • Output voltage of 1.8, 2.5, 2.8, 3, 3.1, 3.3, 5 V
    • Internal current and thermal limit
    • Low output noise voltage 30 mVrms
    • Small package SOT23-5L
    • Temperature range: - 40°C to 125 °C

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Part Number
Package
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Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
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LD2985BM25R SOT23-5L Tape And Reel 2.5 2.5 0.15
Active
0.166 1000
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ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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LD2985BM28R SOT23-5L Tape And Reel 2.8 2.5 0.15
Active
0.166 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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RS COMPONENTS EUROPE 1940 1 Order Now
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LD2985BM50R SOT23-5L Tape And Reel 5 2.5 0.15
Active
0.166 1000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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Distributor availability ofLD2985BM50R

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DIGIKEY WORLDWIDE 8760 1 Order Now
RS COMPONENTS EUROPE 9005 1 Order Now
AVNET AMERICA 48000 0 Order Now
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MOUSER WORLDWIDE 5421 1 Order Now
Farnell Element14 EUROPE 585 1 Order Now
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DIGIKEY

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8760

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1

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Stock

9005

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1

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48000

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0

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9000

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0

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5421

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1

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585

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3000

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Distributor reported inventory date: 2019-05-26

LD2985BM33R SOT23-5L Tape And Reel 3.3 2.5 0.15
Active
0.166 1000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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Distributor availability ofLD2985BM33R

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DIGIKEY WORLDWIDE 13462 1 Order Now
AVNET AMERICA 18000 0 Order Now
FUTURE WORLDWIDE 15000 3000 Order Now
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ARROW AMERICA 30000 1 Order Now
MOUSER WORLDWIDE 10984 1 Order Now
ANGLIA Live EUROPE 93020 500 Order Now
RUTRONIK EUROPE 33000 3000 Order Now

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13462

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1

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18000

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0

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15000

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3000

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21000

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0

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Stock

30000

Min.Order

1

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Stock

10984

Min.Order

1

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Stock

93020

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500

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33000

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3000

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Distributor reported inventory date: 2019-05-26

LD2985BM18R SOT23-5L Tape And Reel 1.8 2.5 0.15
Active
0.166 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofLD2985BM18R

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DIGIKEY WORLDWIDE 6872 1 Order Now
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Distributor reported inventory date: 2019-05-26

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DIGIKEY

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6872

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3000

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3000

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Stock

812

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Distributor reported inventory date: 2019-05-26

LD2985BM30R SOT23-5L Tape And Reel 3 2.5 0.15
Active
0.166 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLD2985BM30R

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ARROW EUROPE 9000 0 Order Now
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MOUSER WORLDWIDE 5120 1 Order Now

Distributor reported inventory date: 2019-05-26

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ARROW

Stock

9000

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0

Region

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Stock

3000

Min.Order

3000

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MOUSER

Stock

5120

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1

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Distributor reported inventory date: 2019-05-26

LD2985BM25R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6501 1 Order Now
ARROW AMERICA 66000 3000 Order Now
MOUSER WORLDWIDE 8148 1 Order Now
RUTRONIK EUROPE 6000 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

6501

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

66000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

8148

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

6000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2985BM28R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1940 1 Order Now
AVNET AMERICA 21000 0 Order Now
ARROW AMERICA 6000 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

RS COMPONENTS

Stock

1940

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

21000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6000

Min.Order

3000

Region

AMERICA Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

2.8

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2985BM50R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8760 1 Order Now
RS COMPONENTS EUROPE 9005 1 Order Now
AVNET AMERICA 48000 0 Order Now
ARROW EUROPE 9000 0 Order Now
MOUSER WORLDWIDE 5421 1 Order Now
Farnell Element14 EUROPE 585 1 Order Now
ANGLIA Live EUROPE 21000 3000 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

8760

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

9005

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

48000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

5421

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

585

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

21000

Min.Order

3000

Region

EUROPE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2985BM33R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 13462 1 Order Now
AVNET AMERICA 18000 0 Order Now
FUTURE WORLDWIDE 15000 3000 Order Now
ARROW EUROPE 21000 0 Order Now
ARROW AMERICA 30000 1 Order Now
MOUSER WORLDWIDE 10984 1 Order Now
ANGLIA Live EUROPE 93020 500 Order Now
RUTRONIK EUROPE 33000 3000 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

13462

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

18000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

15000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

21000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

30000

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

10984

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

93020

Min.Order

500

Region

EUROPE Order Now

RUTRONIK

Stock

33000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2985BM18R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6872 1 Order Now
ARROW AMERICA 3000 3000 Order Now
MOUSER WORLDWIDE 812 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

DIGIKEY

Stock

6872

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

812

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2985BM30R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
ARROW EUROPE 9000 0 Order Now
ARROW AMERICA 3000 3000 Order Now
MOUSER WORLDWIDE 5120 1 Order Now

Distributor reported inventory date: 2019-05-26

Distributor Name

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

3000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

5120

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-26

Output Voltage (V) (nom)

3

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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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      Very low drop and low noise voltage regulator with inhibit function
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      Very low drop and low noise voltage regulator with inhibit function

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD2985BM18R
Active
SOT23-5L Industrial Ecopack2
LD2985BM25R
Active
SOT23-5L Industrial Ecopack2
LD2985BM28R
Active
SOT23-5L Industrial Ecopack2
LD2985BM30R
Active
SOT23-5L Industrial Ecopack2
LD2985BM33R
Active
SOT23-5L Industrial Ecopack2
LD2985BM50R
Active
SOT23-5L Industrial Ecopack2

LD2985BM18R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2985BM25R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2985BM28R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2985BM30R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2985BM33R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2985BM50R

Package:

SOT23-5L

Material Declaration**:

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.