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  • The L7985/A is a step-down switching regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 A current to the load depending on the application conditions. The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. The DFN and the HSOP packages with exposed pad allow the reduction of RthJAdown to 60 °C/W and 40 °C/W respectively.

    Key Features

    • 2 A DC output current
    • 4.5 V to 38 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and enable
    • Low dropout operation: 100% duty cycle
    • Voltage feed-forward
    • Zero load current operation
    • Overcurrent and thermal protection
    • VFDFPN 3x3 - 10L and HSOP8 package

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    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA097V1

      Active

      2 A step-down switching demonstration board based on the L7985 in DFN10 package

      PSU and Converter Solution Eval Boards --

      STEVAL-ISA098V1

      Active

      2 A step-down switching demonstration board based on the L7985A in HSOP8 package

      PSU and Converter Solution Eval Boards --
      STEVAL-ISA097V1

      Description:

      2 A step-down switching demonstration board based on the L7985 in DFN10 package
      STEVAL-ISA098V1

      Description:

      2 A step-down switching demonstration board based on the L7985A in HSOP8 package

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L7985

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L7985A
Active
PowerSO-8 Industrial Ecopack2
L7985ATR
Active
PowerSO-8 Industrial Ecopack2
L7985TR
Active
DFN10 3X3 Industrial Ecopack2

L7985A

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7985ATR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7985TR

Package:

DFN10 3X3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN10 3X3

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.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output

V This option is required and must be a number.
A This option is required and must be a number.

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
L7985A Available at 7 distributors

Distributor availability ofL7985A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 947 1 Order Now
RS COMPONENTS EUROPE 2515 5 Order Now
ARROW EUROPE 791 0 Order Now
ARROW AMERICA 1 2000 Order Now
MOUSER WORLDWIDE 809 1 Order Now
Farnell Element14 EUROPE 1948 1 Order Now
RUTRONIK EUROPE 1600 100 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

DIGIKEY

Stock

947

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2515

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

791

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

809

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1948

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

1600

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

Buy Direct
Active
EAR99 NEC Tube PowerSO-8 - - PHILIPPINES 0.791 / 1k
L7985ATR Available at 4 distributors

Distributor availability ofL7985ATR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1577 1 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 1 1 Order Now
Farnell Element14 EUROPE 175 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

RS COMPONENTS

Stock

1577

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

175

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

Active
EAR99 NEC Tape And Reel PowerSO-8 - - PHILIPPINES 0.791 / 1k
L7985TR Available at 1 distributors

Distributor availability ofL7985TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6466 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

DIGIKEY

Stock

6466

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-27

Active
EAR99 NEC Tape And Reel DFN10 3X3 - - PHILIPPINES 0.751 / 1k

L7985A

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.791 / 1k

Distributor availability ofL7985A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 947 1 Order Now
RS COMPONENTS EUROPE 2515 5 Order Now
ARROW EUROPE 791 0 Order Now
ARROW AMERICA 1 2000 Order Now
MOUSER WORLDWIDE 809 1 Order Now
Farnell Element14 EUROPE 1948 1 Order Now
RUTRONIK EUROPE 1600 100 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

DIGIKEY

Stock

947

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2515

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

791

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

809

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1948

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

1600

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

ECCN (EU)

NEC

Packing Type

Tube

Package

PowerSO-8

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.791 / 1k

Country of Origin

PHILIPPINES

L7985ATR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.791 / 1k

Distributor availability ofL7985ATR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1577 1 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 1 1 Order Now
Farnell Element14 EUROPE 175 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

RS COMPONENTS

Stock

1577

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1

Min.Order

1

Region

AMERICA Order Now

Farnell Element14

Stock

175

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-27

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PowerSO-8

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.791 / 1k

Country of Origin

PHILIPPINES

L7985TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.751 / 1k

Distributor availability ofL7985TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6466 1 Order Now

Distributor reported inventory date: 2020-10-27

Distributor Name

DIGIKEY

Stock

6466

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-27

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN10 3X3

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.751 / 1k

Country of Origin

PHILIPPINES

(*) 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