3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987

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  • The STEVAL-ISA152V1 product evaluation board is a step-down switching power supply based on the L7987 regulator in an HTSSOP16 package. The output voltage can be set starting from 0.8 V. Low drop-out operation, with almost 100% duty cycle, can be achieved.

    The L7987 is a 61 V, 3 A step-down asynchronous switching regulator with embedded power MOSFET caable of delivering up to 3 A of current, depending on the application conditions.
    The embedded switch-over feature on the VBIAS pin and the light load management (pulse skipping) are intended to maximize power conversion efficiency across the entire load range.
    The soft-start, current limit threshold and the 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 L7987 regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current

    Key Features

    • 3.3 V output voltage
    • 3 A DC output current
    • 4.5 V to 60 V input voltage
    • 500 kHz switching frequency
    • 3.5 ms programmed soft-start
    • VBIAS switch-over for improved efficiency at light load
    • 180° out of phase synchronization available
    • Open drain PGOOD 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
Order from Distributors
Order from ST
STEVAL-ISA152V1 L7987
Active
85.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA152V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6 1 Order Now
MOUSER WORLDWIDE 9 1 Order Now

Distributor reported inventory date: 2019-06-16

Distributor Name

DIGIKEY

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-06-16

Buy now

STEVAL-ISA152V1

Core Product

L7987

Marketing Status

Active

Unit Price (US$)

85.0*

Distributor availability ofSTEVAL-ISA152V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6 1 Order Now
MOUSER WORLDWIDE 9 1 Order Now

Distributor reported inventory date: 2019-06-16

Distributor Name

DIGIKEY

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-06-16

Unit Price (US$)

85

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
      DB2108
      3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987
      1.0
      131.71 KB
      PDF
      DB2108

      3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA152V1 gerber files 1.0
      1 MB
      ZIP

      STEVAL-ISA152V1 gerber files

    • Description Version Size Action
      STEVAL-ISA152V1 BOM 1.0
      47.66 KB
      PDF

      STEVAL-ISA152V1 BOM

    • Description Version Size Action
      STEVAL-ISA152V1 schematics 1.0
      48.84 KB
      PDF

      STEVAL-ISA152V1 schematics

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-ISA152V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA152V1

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.