STEVAL-ISA044V5

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3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)

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  • The STEVAL-ISA044V5 is a demonstration board based on the ST1S10 device assembled in a Power SO-8 ePad package. The ST1S10 is a step-down DC-DC converter with the inhibit function optimized for powering high voltages in LCD applications and low voltages in digital-core HDD applications. It replaces the high-current linear solution when high power dissipation is an issue.

    It provides up to 3 A over an input voltage range of 2.5 V to 18.0 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as a resistor divider to set the output voltage value. Only an inductor and 3 capacitors are required.
    The current-mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator can work in burst mode automatically. The device can operate in PWM mode with a fixed frequency or synchronized to an external frequency. It switches at a frequency of 900 kHz when the SYNC pin is connected to ground or a fixed voltage (less than 5.5 V), and can synchronize the switching frequency between 400 kHz to 1.2 MHz from an external clock applied to the SYNC pin.
    A thermal shutdown circuit is integrated and activates at 150 °C. Cycle-by-cycle current limitation provides protection against shorted outputs. The quiescent current is less than 6 μA in the inhibit state.

    Key Features

    • Input voltage range: 2.5 V to 18.0 V
    • Max IOUT: 3 A
    • High internal switching frequency : 900 kHz
    • PWM mode operation with a fixed frequency or synchronized to an external frequency between 400 kHz and 1.2 MHz
    • Inhibit pin available
    • Quiescent current : < 6 μA in inhibit state
    • RoHS compliant

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Budgetary Price (US$)*
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ECCN (US)
Country of Origin
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STEVAL-ISA044V5 ST1S10
Active
39.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA044V5

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8 1 Order Now
RS COMPONENTS EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-02-18

Distributor Name

DIGIKEY

Stock

8

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-02-18

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STEVAL-ISA044V5

Core Product

ST1S10

Marketing Status

Active

Unit Price (US$)

39.0*

Distributor availability ofSTEVAL-ISA044V5

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8 1 Order Now
RS COMPONENTS EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-02-18

Distributor Name

DIGIKEY

Stock

8

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-02-18

Unit Price (US$)

39

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
      DB1460
      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)
      1.1
      338.2 KB
      PDF
      DB1460

      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)

Hardware Resources

    • Description Version Size Action
      Gerber files for STEVAL-ISA044V5 1.0
      109.61 KB
      ZIP

      Gerber files for STEVAL-ISA044V5

    • Description Version Size Action
      STEVAL-ISA044V5 BOM 2.1
      7.17 KB
      PDF

      STEVAL-ISA044V5 BOM

    • Description Version Size Action
      STEVAL-ISA044V5 schematics 1.0
      21.99 KB
      PDF

      STEVAL-ISA044V5 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-ISA044V5
Active
CARD Industrial Ecopack2 -

STEVAL-ISA044V5

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.

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