LD1085

Active

3 A low drop positive voltage regulator: adjustable and fixed

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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

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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
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
LD1085D2M33R Available at 5 distributors

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2557 1 Order Now
RS COMPONENTS EUROPE 2430 5 Order Now
FUTURE WORLDWIDE 555 1 Order Now
MOUSER WORLDWIDE 469 1 Order Now
Farnell Element14 EUROPE 807 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

2557

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2430

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

555

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

469

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

807

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k
LD1085D2M-R Available at 6 distributors

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1481 1 Order Now
RS COMPONENTS EUROPE 885 5 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 848 1 Order Now
MOUSER WORLDWIDE 2891 1 Order Now
Farnell Element14 EUROPE 53 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

1481

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

885

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

848

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2891

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

53

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k
LD1085D2T33R Available at 4 distributors

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10250 1 Order Now
RS COMPONENTS EUROPE 1810 5 Order Now
MOUSER WORLDWIDE 6692 1 Order Now
Farnell Element14 EUROPE 1944 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

10250

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1810

Min.Order

5

Region

EUROPE Order Now

MOUSER

Stock

6692

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1944

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k
LD1085P Available at 2 distributors

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 20 1 Order Now
Farnell Element14 EUROPE 42 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

RS COMPONENTS

Stock

20

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

42

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Active
EAR99 NEC Tube TO-220FP -40 125 CHINA 0.572 / 1k
LD1085D2T-R Available at 3 distributors

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5482 1 Order Now
RS COMPONENTS EUROPE 1365 5 Order Now
Farnell Element14 EUROPE 361 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

5482

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1365

Min.Order

5

Region

EUROPE Order Now

Farnell Element14

Stock

361

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k
LD1085D2M25R Available at 3 distributors

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 2000 0 Order Now
MOUSER WORLDWIDE 102 1 Order Now
Farnell Element14 EUROPE 1438 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

102

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1438

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k
LD1085V50 Available at 6 distributors

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 880 1 Order Now
RS COMPONENTS EUROPE 685 5 Order Now
AVNET AMERICA 2000 0 Order Now
Newark Element14 AMERICA 1 0 Order Now
MOUSER WORLDWIDE 2642 1 Order Now
Farnell Element14 EUROPE 1879 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

880

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

685

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2642

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1879

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Buy Direct
Active
EAR99 NEC Tube TO-220 -40 125 CHINA 0.428 / 1k
LD1085V Available at 3 distributors

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 620 1 Order Now
Farnell Element14 EUROPE 1894 1 Order Now
ANGLIA Live EUROPE 365 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

RS COMPONENTS

Stock

620

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

1894

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

365

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Active
EAR99 NEC Tube TO-220 -40 125 CHINA 0.428 / 1k
LD1085D2M18R Available at 4 distributors

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 641 1 Order Now
AVNET AMERICA 2000 0 Order Now
MOUSER WORLDWIDE 1932 1 Order Now
Farnell Element14 EUROPE 2359 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

641

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1932

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2359

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

Buy Direct
Active
EAR99 NEC Tape And Reel D2PAK -40 125 CHINA 0.496 / 1k

LD1085D2M33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2M33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2557 1 Order Now
RS COMPONENTS EUROPE 2430 5 Order Now
FUTURE WORLDWIDE 555 1 Order Now
MOUSER WORLDWIDE 469 1 Order Now
Farnell Element14 EUROPE 807 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

2557

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2430

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

555

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

469

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

807

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 1k

Country of Origin

CHINA

LD1085D2M-R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2M-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1481 1 Order Now
RS COMPONENTS EUROPE 885 5 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 848 1 Order Now
MOUSER WORLDWIDE 2891 1 Order Now
Farnell Element14 EUROPE 53 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

1481

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

885

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

848

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2891

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

53

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 1k

Country of Origin

CHINA

LD1085D2T33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2T33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10250 1 Order Now
RS COMPONENTS EUROPE 1810 5 Order Now
MOUSER WORLDWIDE 6692 1 Order Now
Farnell Element14 EUROPE 1944 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

10250

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1810

Min.Order

5

Region

EUROPE Order Now

MOUSER

Stock

6692

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1944

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 1k

Country of Origin

CHINA

LD1085P

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.572 / 1k

Distributor availability ofLD1085P

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 20 1 Order Now
Farnell Element14 EUROPE 42 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

RS COMPONENTS

Stock

20

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

42

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220FP

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.572 / 1k

Country of Origin

CHINA

LD1085D2T-R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2T-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5482 1 Order Now
RS COMPONENTS EUROPE 1365 5 Order Now
Farnell Element14 EUROPE 361 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

5482

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1365

Min.Order

5

Region

EUROPE Order Now

Farnell Element14

Stock

361

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 1k

Country of Origin

CHINA

LD1085D2M25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2M25R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 2000 0 Order Now
MOUSER WORLDWIDE 102 1 Order Now
Farnell Element14 EUROPE 1438 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

102

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1438

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 1k

Country of Origin

CHINA

LD1085V50

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.428 / 1k

Distributor availability ofLD1085V50

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 880 1 Order Now
RS COMPONENTS EUROPE 685 5 Order Now
AVNET AMERICA 2000 0 Order Now
Newark Element14 AMERICA 1 0 Order Now
MOUSER WORLDWIDE 2642 1 Order Now
Farnell Element14 EUROPE 1879 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

880

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

685

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2642

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1879

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.428 / 1k

Country of Origin

CHINA

LD1085V

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.428 / 1k

Distributor availability ofLD1085V

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 620 1 Order Now
Farnell Element14 EUROPE 1894 1 Order Now
ANGLIA Live EUROPE 365 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

RS COMPONENTS

Stock

620

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

1894

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

365

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.428 / 1k

Country of Origin

CHINA

LD1085D2M18R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.496 / 1k

Distributor availability ofLD1085D2M18R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 641 1 Order Now
AVNET AMERICA 2000 0 Order Now
MOUSER WORLDWIDE 1932 1 Order Now
Farnell Element14 EUROPE 2359 1 Order Now

Distributor reported inventory date: 2021-04-21

Distributor Name

DIGIKEY

Stock

641

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1932

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2359

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-21

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.496 / 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