STEVAL-L7983ADJ

Active

12 V/0.3 A step down DC/DC converter (VIN = 12 to 60 V) based on the L7983PUR regulator

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  • The STEVAL-L7983ADJ step-down switching power supply evaluation board is based on the L7983PUR regulator in an DFN10 3x3 mm package with 12 V set output voltage. The selected switching frequency is 1 MHz and it can be adjusted by applying an external clock on the LNM/LCM pin or by changing the frequency programming resistor.

    The step-down monolithic switching regulator can deliver up to 300 mA DC based on peak current mode architecture. The wide input voltage range and adjustable UVLO threshold meet the specification for 12 V, 24 V and 48 V industrial bus standards.
    L7983 supports dynamic Low Consumption Mode (LCM) to Low Noise Mode (LNM) transition. LCM is designed for applications with active idle mode to maximize the efficiency at light load with controlled output voltage ripple, while LNM keeps the switching frequency constant over the load current range for low noise applications.
    The soft start time is internally fixed and the output voltage supervisor manages the reset phase for any digital load (MCU, FPGA, etc.).
    The internal compensation network features high noise immunity, simple design and component cost savings. The RST open collector output can also implement output voltage sequencing during the power-up phase.
    The synchronous rectification, designed for high efficiency at medium to heavy loads, and the high switching frequency capability contribute to size reduction in final application designs. Pulse-by-pulse current sensing on both power elements implements effective constant current protection.

    Key Features

    • 12 V to 60 V operating input voltage
    • Step-down (buck) conversion
    • 12 V output voltage
    • 300 mA DC max. output current
    • 1 MHz selected switching frequency
    • Dynamic Low Consumption Mode to Low Noise Mode selection
    • Internal soft-start
    • Synchronization to external clock
    • Internal compensation network
    • Auto recovery overcurrent, overvoltage and thermal protection
    • RoHS and China RoHS compliant
    • WEEE compliant (2012/19/UE RAEE II)

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Related Applications

Power Supplies and Converters

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-L7983ADJ
Active
CARD Industrial Ecopack2 Yes

STEVAL-L7983ADJ

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

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STEVAL-L7983ADJ Available at 2 distributors

Distributor availability ofSTEVAL-L7983ADJ

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 10 1 Order Now

Distributor reported inventory date: 2020-11-27

Distributor Name

DIGIKEY

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-27

Buy Direct L7983PUR
Active
ST EAR99 NEC ITALY - 18.0 / 1

STEVAL-L7983ADJ

Core Product

L7983PUR

Marketing Status

Active

Budgetary Price (US$)*/Qty

18.0 / 1

Distributor availability ofSTEVAL-L7983ADJ

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 10 1 Order Now

Distributor reported inventory date: 2020-11-27

Distributor Name

DIGIKEY

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-27

Supplier

ST

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

18.0 / 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