LD1085

Active
Design Win

3 A low drop positive voltage regulator: adjustable and fixed

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

Product overview

Description

The LD1085 is a low drop voltage regulator able to provide up to 3 A of output current. Dropout is guaranteed at a maximum of 1.2 V at the maximum output current, decreasing at lower loads. The LD1085 is pin-to-pin compatible with the older 3-terminal adjustable regulators, but offers better performance in terms of drop and output tolerance. Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085 quiescent current flows into the load, thus increase efficiency. Only a 10 μF minimum capacitor is need for stability.
The device is supplied in TO-220, TO-220FP, D²PAK and D²PAK/A packages. On-chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1% at 25 °C.
  • All features

    • Typical dropout 1.3 V (at 3 A)
    • Three terminal adjustable or fixed output voltage 1.8 V, 2.5 V, 3.3 V, 5 V
    • Guaranteed output current up to 3 A
    • Output tolerance ± 1% at 25 °C and ± 2% in full temperature range
    • Internal power and thermal limit
    • Wide operating temperature range -40 °C to 125 °C
    • Package available: TO-220, TO-220FP, D²PAK, D²PAK/A
    • Pinout compatibility with standard adjustable VREG

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LD1085

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**
LD1085D2M-R
Active
D2PAK Industrial Ecopack2
LD1085D2M18R
Active
D2PAK Industrial Ecopack2
LD1085D2M25R
Active
D2PAK Industrial Ecopack2
LD1085D2M33R
Active
D2PAK Industrial Ecopack2
LD1085D2T-R
Active
D2PAK Industrial Ecopack2
LD1085D2T33R
Active
D2PAK Industrial Ecopack2
LD1085P
Active
TO-220FP Industrial Ecopack2
LD1085V
Active
TO-220 Industrial Ecopack2
LD1085V50
Active
TO-220 Industrial Ecopack2

LD1085D2M-R

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085D2M18R

Package:

D2PAK

Material Declaration**:

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085D2M25R

Package:

D2PAK

Material Declaration**:

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085D2M33R

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085D2T-R

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085D2T33R

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085P

Package:

TO-220FP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220FP

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085V

Package:

TO-220

Material Declaration**:

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD1085V50

Package:

TO-220

Material Declaration**:

Marketing Status

Active

Package

TO-220

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

Swipe or click the button to explore more details Don't show this again
Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
LD1085D2M33R Available at 4 distributors

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7987 1 Buy from Distributor
RS COMPONENTS EUROPE 620 5 Buy from Distributor
FUTURE WORLDWIDE 2000 1000 Buy from Distributor
MOUSER WORLDWIDE 51 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

7987

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

620

Min.Order

5

FUTURE

Stock

2000

Min.Order

1000

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

51

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA
LD1085D2M-R Available at 2 distributors

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1844 1 Buy from Distributor
MOUSER WORLDWIDE 6444 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

1844

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

6444

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA
LD1085D2T33R Available at 4 distributors

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5492 1 Buy from Distributor
COMPEL EUROPE 683 1 Buy from Distributor
Newark Element14 AMERICA 20 0 Buy from Distributor
Farnell Element14 EUROPE 2940 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

5492

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

683

Min.Order

1

Newark Element14

Stock

20

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

2940

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA
LD1085P Available at 4 distributors

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2353 1 Buy from Distributor
Newark Element14 AMERICA 571 0 Buy from Distributor
MOUSER WORLDWIDE 2909 1 Buy from Distributor
Farnell Element14 EUROPE 1437 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2353

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Newark Element14

Stock

571

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

2909

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1437

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tube TO-220FP -40 125 CHINA
LD1085D2T-R Available at 2 distributors

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7750 1 Buy from Distributor
Farnell Element14 EUROPE 6375 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

7750

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

6375

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA
LD1085D2M25R Available at 4 distributors

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2511 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
MOUSER WORLDWIDE 625 1 Buy from Distributor
Farnell Element14 EUROPE 1640 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2511

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

625

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1640

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA
LD1085V50 Available at 6 distributors

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2747 1 Buy from Distributor
RS COMPONENTS EUROPE 1710 5 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 4080 1 Buy from Distributor
Farnell Element14 EUROPE 1307 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2747

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

1710

Min.Order

5

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

4080

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1307

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tube TO-220 -40 125 CHINA
LD1085V Available at 4 distributors

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1925 5 Buy from Distributor
MOUSER WORLDWIDE 1004 1 Buy from Distributor
Farnell Element14 EUROPE 6496 1 Buy from Distributor
ANGLIA Live EUROPE 1214 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

RS COMPONENTS

Stock

1925

Min.Order

5

MOUSER

Stock

1004

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

6496

Min.Order

1

ANGLIA Live

Stock

1214

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tube TO-220 -40 125 CHINA
LD1085D2M18R Available at 2 distributors

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2961 1 Buy from Distributor
Farnell Element14 EUROPE 2123 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

MOUSER

Stock

2961

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2123

Min.Order

1

Distributor reported inventory date: 2022-07-14

Active
EAR99 NEC Tape and Reel D2PAK -40 125 CHINA

LD1085D2M33R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2M33R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7987 1 Buy from Distributor
RS COMPONENTS EUROPE 620 5 Buy from Distributor
FUTURE WORLDWIDE 2000 1000 Buy from Distributor
MOUSER WORLDWIDE 51 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

7987

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

620

Min.Order

5

FUTURE

Stock

2000

Min.Order

1000

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

51

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-14

LD1085D2M-R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2M-R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1844 1 Buy from Distributor
MOUSER WORLDWIDE 6444 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

1844

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

6444

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-07-14

LD1085D2T33R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2T33R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5492 1 Buy from Distributor
COMPEL EUROPE 683 1 Buy from Distributor
Newark Element14 AMERICA 20 0 Buy from Distributor
Farnell Element14 EUROPE 2940 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

5492

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

683

Min.Order

1

Newark Element14

Stock

20

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

2940

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085P Active

Package:
TO-220FP
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085P

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2353 1 Buy from Distributor
Newark Element14 AMERICA 571 0 Buy from Distributor
MOUSER WORLDWIDE 2909 1 Buy from Distributor
Farnell Element14 EUROPE 1437 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2353

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Newark Element14

Stock

571

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

2909

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1437

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085D2T-R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2T-R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7750 1 Buy from Distributor
Farnell Element14 EUROPE 6375 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

7750

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

6375

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085D2M25R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2M25R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2511 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
MOUSER WORLDWIDE 625 1 Buy from Distributor
Farnell Element14 EUROPE 1640 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2511

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

625

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1640

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085V50 Active

Package:
TO-220
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085V50

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2747 1 Buy from Distributor
RS COMPONENTS EUROPE 1710 5 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 4080 1 Buy from Distributor
Farnell Element14 EUROPE 1307 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

DIGIKEY

Stock

2747

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

1710

Min.Order

5

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

4080

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1307

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085V Active

Package:
TO-220
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085V

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1925 5 Buy from Distributor
MOUSER WORLDWIDE 1004 1 Buy from Distributor
Farnell Element14 EUROPE 6496 1 Buy from Distributor
ANGLIA Live EUROPE 1214 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

RS COMPONENTS

Stock

1925

Min.Order

5

MOUSER

Stock

1004

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

6496

Min.Order

1

ANGLIA Live

Stock

1214

Min.Order

1

Distributor reported inventory date: 2022-07-14

LD1085D2M18R Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD1085D2M18R

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2961 1 Buy from Distributor
Farnell Element14 EUROPE 2123 1 Buy from Distributor

Distributor reported inventory date: 2022-07-14

Distributor Name

MOUSER

Stock

2961

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

2123

Min.Order

1

Distributor reported inventory date: 2022-07-14

Swipe or click the button to explore more details Don't show this again

(*) 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