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  • The STEVAL-ISA155V1 product evaluation board integrates the L6902D step-down switching regulator with adjustable current limit, together with the external components required for a typical application.

    The input voltage of the board can range from 8 V up to 25 V due to the rated voltage of the input capacitor and the Schottky rectifier repetitive peak reverse voltage (both 25 V). The external resistor divider (R1 and R2) sets the output voltage of the application board to 3.3 V. A different output voltage can be regulated from 1.235 V up to 10 V, the rated voltage of the output capacitor. A current limit of 1 A is programmed by the 100 mΩ sense resistor (Rsense).
    The inductor saturation current and the forward current of the Schottky rectifier fit the current limit setting.

    Key Features

    • Up to 1 A output current
    • Operating input voltage from 8 V to 25 V
    • Precise 3.3 V (±2%) reference voltage
    • 5% output current accuracy
    • Output voltage adjustable from 1.235 V to 34 V
    • 250 kHz internally fixed frequency
    • Voltage feedforward
    • Zero load current operation
    • Adjustable current limit
    • Protection against feedback disconnection
    • Thermal shutdown
    • RoHS compliant

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB2340
      1 A constant current DC/DC converter evaluation board based on the L6902D
      1.2
      216.17 KB
      PDF
      DB2340

      1 A constant current DC/DC converter evaluation board based on the L6902D

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA155V1 gerber files 1.0
      66.97 KB
      ZIP

      STEVAL-ISA155V1 gerber files

    • Description Version Size Action
      STEVAL-ISA155V1 BOM 1.0
      58.99 KB
      PDF

      STEVAL-ISA155V1 BOM

    • Description Version Size Action
      STEVAL-ISA155V1 schematics 1.0
      86.94 KB
      PDF

      STEVAL-ISA155V1 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
      Terms of use 1.7
      57.54 KB
      PDF

      Terms of use

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA155V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA155V1

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Core Product
Marketing Status
Supplier
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
STEVAL-ISA155V1 Available at 1 distributors

Distributor availability ofSTEVAL-ISA155V1

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

L6902D
Active
- EAR99 NEC ITALY - 39.0 / 1

STEVAL-ISA155V1

Core Product

L6902D

Marketing Status

Active

Budgetary Price (US$)*/Qty

39.0 / 1

Distributor availability ofSTEVAL-ISA155V1

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-08-10

Distributor Name

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-10

Supplier

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

39.0 / 1

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