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  • The EVAL5987/A demonstration board provides the design engineer with a fully functional stepdown switching regulator with an output current of up to 3 A. The board integrates STMicroelectronics’ L5987/A 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 L5987/A device.
    The board features an external resistor divider (R1 and R2) designed for an output voltage of 1.8 V.
    The output voltage can be set to a level from 0.6 V up to the input voltage.
    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 or HSOP8 for the L5987A
    • 3 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
    • Overcurrent and thermal protection
    • 250 kHz switching frequency, programmable up to 1 MHz

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
EVAL5987A
Active
CARD Industrial Not compliant -

EVAL5987A

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
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Order from ST
Core Product
Marketing Status
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ECCN (US)
ECCN (EU)
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Board production status
Budgetary Price (US$)*/Qty
EVAL5987A Available at 1 distributors

Distributor availability ofEVAL5987A

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct L5987A
Active
- EAR99 NEC ITALY -

EVAL5987A

Core Product

L5987A

Marketing Status

Active

Budgetary Price (US$)*/Qty

Distributor availability ofEVAL5987A

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-02

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