LD1085

Active

3 A low drop positive voltage regulator: adjustable and fixed

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Quality & Reliability
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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.

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Symbols

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Footprints

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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**:

PDF XML

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

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 2 distributors

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1205 5 Buy from Distributor
MOUSER WORLDWIDE 142 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

1205

Min.Order

5

MOUSER

Stock

142

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k
LD1085D2M-R Available at 2 distributors

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 40 1 Buy from Distributor
MOUSER WORLDWIDE 53 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

40

Min.Order

1

MOUSER

Stock

53

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k
LD1085D2T33R Available at 2 distributors

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 778 1 Buy from Distributor
RS COMPONENTS EUROPE 10 5 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

COMPEL

Stock

778

Min.Order

1

RS COMPONENTS

Stock

10

Min.Order

5

Distributor reported inventory date: 2022-01-19

Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k
LD1085P Available at 3 distributors

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 113 0 Buy from Distributor
MOUSER WORLDWIDE 817 1 Buy from Distributor
Farnell Element14 EUROPE 272 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

Newark Element14

Stock

113

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

817

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

272

Min.Order

1

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tube TO-220FP -40 125 CHINA 0.8294 / 1k
LD1085D2T-R Available at 3 distributors

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Buy from Distributor
RS COMPONENTS EUROPE 15 5 Buy from Distributor
Farnell Element14 EUROPE 47 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

15

Min.Order

5

Farnell Element14

Stock

47

Min.Order

1

Distributor reported inventory date: 2022-01-19

Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k
LD1085D2M25R Available at 4 distributors

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2590 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
MOUSER WORLDWIDE 233 1 Buy from Distributor
Farnell Element14 EUROPE 1005 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

2590

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

233

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1005

Min.Order

1

Distributor reported inventory date: 2022-01-19

Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k
LD1085V50 Available at 4 distributors

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 25 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 31 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

25

Min.Order

1

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

31

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tube TO-220 -40 125 CHINA 0.6207 / 1k
LD1085V Available at 6 distributors

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 393 1 Buy from Distributor
COMPEL EUROPE 900 1 Buy from Distributor
RS COMPONENTS EUROPE 65 5 Buy from Distributor
MOUSER WORLDWIDE 1524 1 Buy from Distributor
Farnell Element14 EUROPE 5114 1 Buy from Distributor
ANGLIA Live EUROPE 1214 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

393

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

900

Min.Order

1

RS COMPONENTS

Stock

65

Min.Order

5

MOUSER

Stock

1524

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

5114

Min.Order

1

ANGLIA Live

Stock

1214

Min.Order

1

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tube TO-220 -40 125 CHINA 0.6207 / 1k
LD1085D2M18R Available at 3 distributors

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 2000 0 Buy from Distributor
MOUSER WORLDWIDE 3315 1 Buy from Distributor
Farnell Element14 EUROPE 1284 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

3315

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1284

Min.Order

1

Distributor reported inventory date: 2022-01-19

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.6957 / 1k

LD1085D2M33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1205 5 Buy from Distributor
MOUSER WORLDWIDE 142 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

1205

Min.Order

5

MOUSER

Stock

142

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 1k

Country of Origin

CHINA

LD1085D2M-R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 40 1 Buy from Distributor
MOUSER WORLDWIDE 53 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

40

Min.Order

1

MOUSER

Stock

53

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 1k

Country of Origin

CHINA

LD1085D2T33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 778 1 Buy from Distributor
RS COMPONENTS EUROPE 10 5 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

COMPEL

Stock

778

Min.Order

1

RS COMPONENTS

Stock

10

Min.Order

5

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 1k

Country of Origin

CHINA

LD1085P

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8294 / 1k

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 113 0 Buy from Distributor
MOUSER WORLDWIDE 817 1 Buy from Distributor
Farnell Element14 EUROPE 272 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

Newark Element14

Stock

113

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

817

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

272

Min.Order

1

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220FP

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.8294 / 1k

Country of Origin

CHINA

LD1085D2T-R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Buy from Distributor
RS COMPONENTS EUROPE 15 5 Buy from Distributor
Farnell Element14 EUROPE 47 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

15

Min.Order

5

Farnell Element14

Stock

47

Min.Order

1

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 1k

Country of Origin

CHINA

LD1085D2M25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2590 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
MOUSER WORLDWIDE 233 1 Buy from Distributor
Farnell Element14 EUROPE 1005 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

2590

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

233

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1005

Min.Order

1

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 1k

Country of Origin

CHINA

LD1085V50

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6207 / 1k

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 25 1 Buy from Distributor
AVNET AMERICA 1000 0 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 31 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

RS COMPONENTS

Stock

25

Min.Order

1

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

31

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6207 / 1k

Country of Origin

CHINA

LD1085V

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6207 / 1k

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 393 1 Buy from Distributor
COMPEL EUROPE 900 1 Buy from Distributor
RS COMPONENTS EUROPE 65 5 Buy from Distributor
MOUSER WORLDWIDE 1524 1 Buy from Distributor
Farnell Element14 EUROPE 5114 1 Buy from Distributor
ANGLIA Live EUROPE 1214 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

DIGIKEY

Stock

393

Min.Order

1

Region

WORLDWIDE Buy from Distributor

COMPEL

Stock

900

Min.Order

1

RS COMPONENTS

Stock

65

Min.Order

5

MOUSER

Stock

1524

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

5114

Min.Order

1

ANGLIA Live

Stock

1214

Min.Order

1

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6207 / 1k

Country of Origin

CHINA

LD1085D2M18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6957 / 1k

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 2000 0 Buy from Distributor
MOUSER WORLDWIDE 3315 1 Buy from Distributor
Farnell Element14 EUROPE 1284 1 Buy from Distributor

Distributor reported inventory date: 2022-01-19

Distributor Name

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

3315

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1284

Min.Order

1

Distributor reported inventory date: 2022-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.6957 / 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