STEVAL-ISA209V1

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38 V, 3 A synchronous step-down switching regulator evaluation board based on the L6983NQTR

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  • The L6983 is an easy to use synchronous monolithic step-down regulator capable of delivering up to 3 A DC to the load, and the wide input voltage range makes the device suitable for a broad range of applications. The L6983NQTR used in this evaluation board is based on peak current mode architecture and is packaged in a QFN16 3x3 with internal compensation, thus minimizing design complexity and size.

    The L6983 is available in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes the efficiency at light-load with controlled output voltage ripple, which is ideal for battery-powered applications. LNM sets the switching frequency and minimizes the output voltage ripple overload current range, meeting the specification for low noise sensitive applications.
    The L6983 allows a 200 Hz - 2.2 MHz switching frequency range with optional spread spectrum for improved EMC. The EN pin provides an enable/disable function, and the typical shutdown current is 2 μA when disabled. As soon as the EN pin is pulled up, the device is enabled and an internal 1.3 ms soft-start sequence is triggered.
    The device also features a Power Good open collector that monitors the FB voltage. Pulse-by-pulse current sensing on both power elements implements effective constant current protection and thermal shutdown prevents thermal run-away.

    Key Features

    • 3.5 V to 38 V operating input voltage
    • Output voltage from 0.85 V to VIN
    • 3.3 V and 5 V fixed output voltage versions
    • 3 A DC output current
    • 17 μA operating quiescent current
    • Internal compensation network
    • Two different versions:
      • LCM for high efficiency at light loads
      • LNM for noise sensitive applications
    • 2 μA shutdown current
    • Internal soft-start
    • Enable
    • Overvoltage protection
    • Output voltage sequencing
    • Thermal protection
    • QFN16 package
    • 200 kHz to 2.2 MHz programmable switching frequency; stable with low ESR capacitor.
    • Optional spread spectrum for improved EMC
    • Power Good
    • Synchronization to external clock for LNM devices

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA209V1
Active
CARD Industrial Ecopack2 Yes

STEVAL-ISA209V1

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-ISA209V1 Available at 6 distributors

Distributor availability ofSTEVAL-ISA209V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
RS COMPONENTS EUROPE 3 1 Order Now
ARROW EUROPE 2 0 Order Now
MOUSER WORLDWIDE 6 1 Order Now
Farnell Element14 EUROPE 14 1 Order Now
ANGLIA Live EUROPE 2 1 Order Now

Distributor reported inventory date: 2020-11-23

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DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

14

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

Buy Direct L6983
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ST EAR99 NEC ITALY -

STEVAL-ISA209V1

Core Product

L6983

Marketing Status

Active

Budgetary Price (US$)*/Qty

Distributor availability ofSTEVAL-ISA209V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
RS COMPONENTS EUROPE 3 1 Order Now
ARROW EUROPE 2 0 Order Now
MOUSER WORLDWIDE 6 1 Order Now
Farnell Element14 EUROPE 14 1 Order Now
ANGLIA Live EUROPE 2 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

14

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

Supplier

ST

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