2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L

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  • The STEVAL-ISA198V1 product evaluation board is a step-down switching power supply based on the L7987L regulator in an HTSSOP16 package. The output voltage can be set starting from 0.8 V. Low drop-out operation, due to the advanced integrated switch management, can be achieved.

    The L7987L is a 61 V, 2 A step-down asynchronous switching regulator with embedded power MOSFET capable of delivering up to 2 A of current, depending on the application conditions.
    The embedded switch-over feature on the VBIAS pin and the light load management (pulse skipping) help maximize power conversion efficiency across the entire load range.
    The soft-start, current limit threshold and switching frequency are adjustable for application optimization.
    The device includes an internal 250 kHz oscillator that can be externally adjusted up to 1.5 MHz; two L7987L regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current.

    Key Features

    • 4.5 V to 60 V input voltage
    • Step-down (buck) conversion
    • 5 V output voltage (VIN > 6 V)
    • Up to 2 A DC output current
    • 500 kHz switching frequency
    • 5 ms programmed soft-start
    • Compliant with ceramic output capacitors
    • 180° out of phase synchronization available
    • Auto recovery overcurrent and thermal protection
    • RoHS compliant

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Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
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STEVAL-ISA198V1 L7987L
Active
30.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA198V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 21 1 Order Now
RS COMPONENTS EUROPE 2 1 Order Now
MOUSER WORLDWIDE 5 1 Order Now
Farnell Element14 EUROPE 14 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

21

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

5

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

14

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

Buy now

STEVAL-ISA198V1

Core Product

L7987L

Marketing Status

Active

Unit Price (US$)

30.0*

Distributor availability ofSTEVAL-ISA198V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 21 1 Order Now
RS COMPONENTS EUROPE 2 1 Order Now
MOUSER WORLDWIDE 5 1 Order Now
Farnell Element14 EUROPE 14 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

21

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

5

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

14

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

Unit Price (US$)

30

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) 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

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Technical Documentation

    • Description Version Size Action
      DB3109
      2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L
      1.0
      267.47 KB
      PDF
      DB3109

      2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA198V1 gerber files 1.0
      43.03 KB
      ZIP

      STEVAL-ISA198V1 gerber files

    • Description Version Size Action
      STEVAL-ISA198V1 BOM 1.0
      11.04 KB
      PDF

      STEVAL-ISA198V1 BOM

    • Description Version Size Action
      STEVAL-ISA198V1 schematic 1.0
      130.88 KB
      PDF

      STEVAL-ISA198V1 schematic

Publications and Collaterals

    • Description Version Size Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA198V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA198V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

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.