STEVAL-L6981NDR

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Design Win

38 V, 1.5 A synchronous step-down switching regulator evaluation board based on the L6981NDR

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Product overview

Description

The STEVAL-L6981NDR is based on the L6981NDR synchronous monolithic step-down regulator delivering up to 1.5 A DC. Its wide input voltage range makes the solution suitable for a broad range of applications.
The device implements peak current mode architecture in a SO 8L package with internal compensation to minimize design complexity and size.
The L6981 is available in low consumption mode (LCM) and low noise mode (LNM) versions.
LCM maximizes efficiency at light-load with controlled output voltage ripple, making the device extremely suitable for battery-powered applications.
LNM makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the specification for noise sensitive applications.
The EN pin manages the enable/disable function. The typical shutdown current is 2 μA when disabled. When the EN pin is pulled up, the device is enabled and the internal 1.3 ms soft-start takes place.
Pulse-by-pulse current sensing on both power elements implements effective constant current protection while thermal shutdown prevents thermal run-away.
  • All 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
    • 1.5 A DC output current
    • 17 μA operating quiescent current (fixed Vout part numbers)
    • Internal compensation network
    • Two different versions: LCM for high efficiency at light loads and LNM for noise sensitive applications
    • 2 μA shutdown current
    • Internal soft-start
    • Enable function
    • Overvoltage protection
    • Output voltage sequencing
    • Thermal protection
    • SO 8L package
    • Synchronization with external clock for LNM devices

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-L6981NDR
Active
CARD Industrial Ecopack2 Yes

STEVAL-L6981NDR

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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Core Product
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ECCN (EU)
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Budgetary Price (US$)*/Qty
STEVAL-L6981NDR Available at 3 distributors

Distributor availability ofSTEVAL-L6981NDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Buy from Distributor
RS COMPONENTS EUROPE 6 1 Buy from Distributor
MOUSER WORLDWIDE 15 1 Buy from Distributor

Distributor reported inventory date: 2022-08-09

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

6

Min.Order

1

MOUSER

Stock

15

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-09

L6981NDR
Active
ST EAR99 NEC ITALY -

STEVAL-L6981NDR Active

ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STEVAL-L6981NDR

Core Product:

L6981NDR

Supplier:

ST

ECCN (EU):

NEC

Country of Origin:

ITALY

Board production status:

-

Distributor availability ofSTEVAL-L6981NDR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Buy from Distributor
RS COMPONENTS EUROPE 6 1 Buy from Distributor
MOUSER WORLDWIDE 15 1 Buy from Distributor

Distributor reported inventory date: 2022-08-09

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

6

Min.Order

1

MOUSER

Stock

15

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-09

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(*) 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