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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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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**:

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

Part Number
Order from Distributors
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
LD2985BM25R Available at 6 distributors

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6183 1 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 6000 0 Order Now
ARROW AMERICA 24000 3000 Order Now
MOUSER WORLDWIDE 7553 1 Order Now
Farnell Element14 EUROPE 2371 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

6183

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

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AMERICA Order Now

ARROW

Stock

6000

Min.Order

0

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EUROPE Order Now

ARROW

Stock

24000

Min.Order

3000

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AMERICA Order Now

MOUSER

Stock

7553

Min.Order

1

Region

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Stock

2371

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

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Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 2.5 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

MALAYSIA

LD2985BM31R Available at 1 distributors

Distributor availability ofLD2985BM31R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 95 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

MOUSER

Stock

95

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

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Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3.1 0.166 / 1k
MORE INFO

Output Tolerance (typ):

1.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

MALAYSIA

LD2985BM28R Available at 3 distributors

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5987 1 Order Now
RS COMPONENTS EUROPE 1470 1 Order Now
MOUSER WORLDWIDE 8770 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

5987

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1470

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

8770

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 2.8 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

MALAYSIA

LD2985BM50R Available at 8 distributors

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7735 1 Order Now
RS COMPONENTS EUROPE 8270 1 Order Now
AVNET AMERICA 3000 0 Order Now
ARROW EUROPE 42000 0 Order Now
Newark Element14 AMERICA 962 0 Order Now
MOUSER WORLDWIDE 5795 1 Order Now
Farnell Element14 EUROPE 3000 1 Order Now
ANGLIA Live EUROPE 5950 10 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

7735

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

8270

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

42000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

962

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5795

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5950

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 5 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

CHINA

LD2985BM33R Available at 10 distributors

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14404 1 Order Now
COMPEL EUROPE 2880 1 Order Now
AVNET AMERICA 33000 0 Order Now
FUTURE WORLDWIDE 9000 3000 Order Now
ARROW EUROPE 30000 0 Order Now
ARROW AMERICA 36000 1 Order Now
MOUSER WORLDWIDE 5960 1 Order Now
Farnell Element14 EUROPE 5730 1 Order Now
ANGLIA Live EUROPE 3000 500 Order Now
RUTRONIK EUROPE 30000 3000 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

14404

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2880

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

33000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

9000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

36000

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

5960

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5730

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

500

Region

EUROPE Order Now

RUTRONIK

Stock

30000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

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Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3.3 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

CHINA

LD2985BM18R Available at 5 distributors

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6332 1 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 3000 0 Order Now
ARROW AMERICA 6000 3000 Order Now
RUTRONIK EUROPE 15000 3000 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

6332

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6000

Min.Order

3000

Region

AMERICA Order Now

RUTRONIK

Stock

15000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 1.8 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

CHINA

LD2985BM30R Available at 3 distributors

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 12000 0 Order Now
MOUSER WORLDWIDE 4339 1 Order Now
Farnell Element14 EUROPE 2581 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4339

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2581

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3 0.166 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.166

Country of Origin:

CHINA

LD2985BM25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6183 1 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 6000 0 Order Now
ARROW AMERICA 24000 3000 Order Now
MOUSER WORLDWIDE 7553 1 Order Now
Farnell Element14 EUROPE 2371 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

6183

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

24000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

7553

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2371

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

MALAYSIA

LD2985BM31R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM31R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 95 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

MOUSER

Stock

95

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.1

Output Tolerance (typ)

1.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

MALAYSIA

LD2985BM28R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5987 1 Order Now
RS COMPONENTS EUROPE 1470 1 Order Now
MOUSER WORLDWIDE 8770 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

5987

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1470

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

8770

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.8

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

MALAYSIA

LD2985BM50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7735 1 Order Now
RS COMPONENTS EUROPE 8270 1 Order Now
AVNET AMERICA 3000 0 Order Now
ARROW EUROPE 42000 0 Order Now
Newark Element14 AMERICA 962 0 Order Now
MOUSER WORLDWIDE 5795 1 Order Now
Farnell Element14 EUROPE 3000 1 Order Now
ANGLIA Live EUROPE 5950 10 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

7735

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

8270

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

42000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

962

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5795

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5950

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

CHINA

LD2985BM33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14404 1 Order Now
COMPEL EUROPE 2880 1 Order Now
AVNET AMERICA 33000 0 Order Now
FUTURE WORLDWIDE 9000 3000 Order Now
ARROW EUROPE 30000 0 Order Now
ARROW AMERICA 36000 1 Order Now
MOUSER WORLDWIDE 5960 1 Order Now
Farnell Element14 EUROPE 5730 1 Order Now
ANGLIA Live EUROPE 3000 500 Order Now
RUTRONIK EUROPE 30000 3000 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

14404

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2880

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

33000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

9000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

36000

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

5960

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5730

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

500

Region

EUROPE Order Now

RUTRONIK

Stock

30000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

CHINA

LD2985BM18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6332 1 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 3000 0 Order Now
ARROW AMERICA 6000 3000 Order Now
RUTRONIK EUROPE 15000 3000 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

6332

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6000

Min.Order

3000

Region

AMERICA Order Now

RUTRONIK

Stock

15000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

Country of Origin

CHINA

LD2985BM30R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.166 / 1k

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 12000 0 Order Now
MOUSER WORLDWIDE 4339 1 Order Now
Farnell Element14 EUROPE 2581 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4339

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2581

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3

Output Tolerance (typ)

2.5

Output Current (A) (nom)

0.15

Budgetary Price (US$)* / Qty

0.166 / 1k

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