STEVAL-ISA144V1

Active

1.5 A step-down switching regulator demonstration board based on the L5983

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Product overview

Description

The STEVAL-ISA144V1 product evaluation board provides the design engineer with a fully functional step-down switching regulator with an output current of up to 1.5 A. The L5983 integrates STMicroelectronics’ step-down switching regulator, together with all the external components required for a typical application. The rated voltage of the input capacitor and Schottky diode rectifier’s repetitive peak reverse voltage are both 25 V, making the board capable of covering the entire 2.9 V - 18 V input voltage range of the L5983 device.
The board features an external resistor divider (R1 and R2) designed for an output voltage of 3.3 V.
The output voltage can be set to a level from 0.6 V up to the rated voltage of the output capacitor (16 V).
The compensation network on the evaluation board allows the use of MLCC as output filter to keep the loop stable. The inductor saturation current and forward current of the Schottky diode are within the current limit values.
The switching frequency on the board is set to 500 kHz by means of the R5 resistor connected to pin Fsw.
  • All features

    • 1.5 A DC output current
    • 2.9 V to 18 V input voltage
    • Output voltage adjustable from 0.6 V to 16 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and inhibit
    • Low dropout operation: 100% duty cycle
    • Zero-load current operation
    • Overcurrent and thermal protection
    • VFQFPN8 3 mm x 3 mm package
    • RoHS compliant

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA144V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA144V1

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
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Core Product
Marketing Status
Supplier
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
STEVAL-ISA144V1 Available at 1 distributors

Distributor availability ofSTEVAL-ISA144V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Buy from Distributor

Distributor reported inventory date: 2021-10-12

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-12

Buy Direct L5983
Active
- EAR99 NEC ITALY - 46.0 / 1

STEVAL-ISA144V1

Core Product

L5983

Marketing Status

Active

Budgetary Price (US$)*/Qty

46.0 / 1

Distributor availability ofSTEVAL-ISA144V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Buy from Distributor

Distributor reported inventory date: 2021-10-12

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-12

Supplier

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

46.0 / 1

Country of Origin

ITALY

Board production status

-

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors