LD2985

Active

Very low drop and low noise voltage regulator with inhibit function

Download datasheet Order Direct
Overview
Online design
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Partner products
Sales Briefcase

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

Recommended for you

Related Applications

Industrial

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LD2985

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

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

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
LD2985BM25R Available at 3 distributors

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3013 1 Order Now
AVNET AMERICA 6000 0 Order Now
Farnell Element14 EUROPE 1958 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

3013

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1958

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 2.5 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM31R No availability of distributors reported, please contact our sales office Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3.1 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

1.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM28R Available at 2 distributors

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2941 1 Order Now
RS COMPONENTS EUROPE 1420 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

2941

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1420

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 2.8 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

MALAYSIA

LD2985BM50R Available at 4 distributors

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 198 1 Order Now
RS COMPONENTS EUROPE 2990 1 Order Now
Newark Element14 AMERICA 911 0 Order Now
Farnell Element14 EUROPE 30 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

198

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2990

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

911

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

30

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 5 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM33R Available at 2 distributors

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 874 1 Order Now
ANGLIA Live EUROPE 3745 10 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

Farnell Element14

Stock

874

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3745

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3.3 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM18R Available at 2 distributors

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6008 1 Order Now
AVNET AMERICA 3000 0 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

6008

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2021-07-30

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 1.8 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM30R Available at 3 distributors

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5173 1 Order Now
AVNET AMERICA 12000 0 Order Now
Farnell Element14 EUROPE 2052 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

5173

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

2052

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

Buy Direct
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 3 0.1909 / 1k
MORE INFO

Output Tolerance (typ):

2.5

Output Current (A) (nom):

0.15

Unit Price (US$):

0.1909

Country of Origin:

CHINA

LD2985BM25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3013 1 Order Now
AVNET AMERICA 6000 0 Order Now
Farnell Element14 EUROPE 1958 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

3013

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1958

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

CHINA

LD2985BM31R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

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

0.1909 / 1k

Country of Origin

CHINA

LD2985BM28R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM28R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2941 1 Order Now
RS COMPONENTS EUROPE 1420 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

2941

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1420

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

MALAYSIA

LD2985BM50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 198 1 Order Now
RS COMPONENTS EUROPE 2990 1 Order Now
Newark Element14 AMERICA 911 0 Order Now
Farnell Element14 EUROPE 30 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

198

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2990

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

911

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

30

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

CHINA

LD2985BM33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM33R

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 874 1 Order Now
ANGLIA Live EUROPE 3745 10 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

Farnell Element14

Stock

874

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3745

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

CHINA

LD2985BM18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6008 1 Order Now
AVNET AMERICA 3000 0 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

6008

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

CHINA

LD2985BM30R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.1909 / 1k

Distributor availability ofLD2985BM30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5173 1 Order Now
AVNET AMERICA 12000 0 Order Now
Farnell Element14 EUROPE 2052 1 Order Now

Distributor reported inventory date: 2021-07-30

Distributor Name

DIGIKEY

Stock

5173

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

12000

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

2052

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-07-30

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

0.1909 / 1k

Country of Origin

CHINA

(*) 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