LD2985

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Design Win

Very low drop and low noise voltage regulator with inhibit function

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Product overview

Description

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.
  • All 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 μVrms
    • Small package SOT23-5L
    • Temperature range: - 40 °C to 125 °C

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STMicroelectronics - LD2985

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3D models

Quality and Reliability

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
LD2985BM31R
Active
SOT23-5L Industrial Ecopack2
LD2985BM33R
Active
SOT23-5L Industrial Ecopack2
LD2985BM50R
Active
SOT23-5L Industrial Ecopack2

LD2985BM18R

Package:

SOT23-5L

Material Declaration**:

PDF XML

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**:

PDF XML

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

LD2985BM31R

Package:

SOT23-5L

Material Declaration**:

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**:

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
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
LD2985BM25R Available at 2 distributors

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 74 1 Buy from Distributor
Farnell Element14 EUROPE 3 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

MOUSER

Stock

74

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3

Min.Order

1

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 2.5

2.5

0.15

0.2527

CHINA

LD2985BM31R No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 3.1

1.5

0.15

0.2106

CHINA

LD2985BM28R Available at 3 distributors

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5781 1 Buy from Distributor
AVNET AMERICA 12000 0 Buy from Distributor
MOUSER WORLDWIDE 7723 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

5781

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

7723

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 2.8

2.5

0.15

0.2527

CHINA

LD2985BM50R Available at 7 distributors

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5818 1 Buy from Distributor
COMPEL EUROPE 4 1 Buy from Distributor
RS COMPONENTS EUROPE 1005 5 Buy from Distributor
AVNET AMERICA 57000 0 Buy from Distributor
Newark Element14 AMERICA 692 0 Buy from Distributor
Farnell Element14 EUROPE 4811 1 Buy from Distributor
ANGLIA Live EUROPE 2550 10 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

5818

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

4

Min.Order

1

RS COMPONENTS

Stock

1005

Min.Order

5

AVNET

Stock

57000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

692

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

4811

Min.Order

1

ANGLIA Live

Stock

2550

Min.Order

10

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 5

2.5

0.15

0.2527

CHINA

LD2985BM33R Available at 6 distributors

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 65767 1 Buy from Distributor
AVNET AMERICA 72000 0 Buy from Distributor
Newark Element14 AMERICA 10 0 Buy from Distributor
MOUSER WORLDWIDE 40837 1 Buy from Distributor
Farnell Element14 EUROPE 14636 1 Buy from Distributor
ANGLIA Live EUROPE 33709 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

65767

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

72000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

10

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

40837

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

14636

Min.Order

1

ANGLIA Live

Stock

33709

Min.Order

1

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 3.3

2.5

0.15

0.2527

CHINA

LD2985BM18R Available at 1 distributors

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 16892 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

16892

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 1.8

2.5

0.15

0.2527

CHINA

LD2985BM30R Available at 3 distributors

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11990 1 Buy from Distributor
MOUSER WORLDWIDE 6035 1 Buy from Distributor
Farnell Element14 EUROPE 5427 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

11990

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

6035

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

5427

Min.Order

1

Distributor reported inventory date: 2022-08-13

Active
EAR99 NEC Tape and Reel SOT23-5L -40 125 3

2.5

0.15

0.2527

CHINA

LD2985BM25R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM25R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

2.5

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 74 1 Buy from Distributor
Farnell Element14 EUROPE 3 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

MOUSER

Stock

74

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3

Min.Order

1

Distributor reported inventory date: 2022-08-13

LD2985BM31R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM31R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

3.1

Output Tolerance (typ):

1.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

No availability of distributors reported, please contact our sales office

LD2985BM28R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM28R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

2.8

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5781 1 Buy from Distributor
AVNET AMERICA 12000 0 Buy from Distributor
MOUSER WORLDWIDE 7723 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

5781

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

7723

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-13

LD2985BM50R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM50R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

5

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5818 1 Buy from Distributor
COMPEL EUROPE 4 1 Buy from Distributor
RS COMPONENTS EUROPE 1005 5 Buy from Distributor
AVNET AMERICA 57000 0 Buy from Distributor
Newark Element14 AMERICA 692 0 Buy from Distributor
Farnell Element14 EUROPE 4811 1 Buy from Distributor
ANGLIA Live EUROPE 2550 10 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

5818

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

4

Min.Order

1

RS COMPONENTS

Stock

1005

Min.Order

5

AVNET

Stock

57000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

692

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

4811

Min.Order

1

ANGLIA Live

Stock

2550

Min.Order

10

Distributor reported inventory date: 2022-08-13

LD2985BM33R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM33R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 65767 1 Buy from Distributor
AVNET AMERICA 72000 0 Buy from Distributor
Newark Element14 AMERICA 10 0 Buy from Distributor
MOUSER WORLDWIDE 40837 1 Buy from Distributor
Farnell Element14 EUROPE 14636 1 Buy from Distributor
ANGLIA Live EUROPE 33709 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

65767

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

72000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

10

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

40837

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

14636

Min.Order

1

ANGLIA Live

Stock

33709

Min.Order

1

Distributor reported inventory date: 2022-08-13

LD2985BM18R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM18R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

1.8

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 16892 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

16892

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-13

LD2985BM30R Active

Package:
SOT23-5L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD2985BM30R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

3

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Country of Origin:

CHINA

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11990 1 Buy from Distributor
MOUSER WORLDWIDE 6035 1 Buy from Distributor
Farnell Element14 EUROPE 5427 1 Buy from Distributor

Distributor reported inventory date: 2022-08-13

Distributor Name

DIGIKEY

Stock

11990

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

6035

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

5427

Min.Order

1

Distributor reported inventory date: 2022-08-13

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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