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  • The EVAL5983 demonstration 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 the Schottky diode rectifier 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 demonstration 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 demonstration board is set to 500 kHz by means of the R5 resistor connected to pin Fsw.

    Key Features

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

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Technical Documentation

    • Description Version Size Action
      DB0785
      1.5 A step-down switching regulator demonstration board based on the L5983
      1.1
      246.04 KB
      PDF
      DB0785

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

Publications and Collaterals

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

Legal

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      Terms of use 1.7
      57.54 KB
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      Terms of use

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
EVAL5983
Active
CARD Industrial Not compliant -

EVAL5983

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Not compliant

(**) 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
EVAL5983 No availability of distributors reported, please contact our sales office L5983
Active
- EAR99 NEC ITALY -

EVAL5983

Core Product

L5983

Marketing Status

Active

Budgetary Price (US$)*/Qty

Supplier

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

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