L7987L

Active

61 V 2 A asynchronous step-down switching regulator with adjustable current limitation

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  • The L7987L device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.8 V to almost VIN. The embedded switchover feature on the VBIAS pin maximizes the efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current accordingly with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency foldback implements an effective constant current protection over the different application conditions. The peak current foldback decreases the stress of the power components in heavy short-circuit condition. The PGOOD open collector output can also implement output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise in low noise applications like sensors with A/D conversion.

    Key Features

    • 2 A DC output current
    • 4.5 V to 61 V operating input voltage
    • RDS,ON = 300 mΩ typ.
    • Adjustable fSW (250 kHz - 1.5 MHz)
    • Low IQ-SHD (11 μA typ. from VIN)
    • Low IQ (1 mA typ. - VIN 24 V - VOUT 3.3 V)
    • Output voltage adjustable from 0.8 V to VIN
    • Synchronization
    • Adjustable soft-start time
    • Adjustable current limitation
    • Advanced bootstrap capacitor management for LDO operation
    • VBIAS improves efficiency at light load
    • PGOOD open collector output
    • Output voltage sequencing
    • Digital frequency foldback in short-circuit
    • Peak current foldback in short-circuit
    • Auto-recovery thermal shutdown

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Related Applications

Home, Building and City Automation

Lighting and Controls

Power Supplies and Converters

Smart Farming

Evaluation Tools

    • Part Number

      2 A step down DC - DC switching regulator (VIN = 4.5 V to 60 V) based on the L7987L

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10340
      61 V, 2 A asynchronous step-down switching regulator with adjustable current limitation
      4.0
      1.53 MB
      PDF
      DS10340

      61 V, 2 A asynchronous step-down switching regulator with adjustable current limitation

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      L7987L Pspice model 1.0
      89.79 KB
      ZIP

      L7987L Pspice model

Publications and Collaterals

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L7987L
Active
HTSSOP16 Industrial Ecopack2
L7987LTR
Active
HTSSOP16 Industrial Ecopack2

L7987L

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7987LTR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

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.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

Sample & Buy

Part Number
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Packing Type
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ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L7987LTR Available at 6 distributors

Distributor availability ofL7987LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5506 1 Order Now
COMPEL EUROPE 1753 1 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
Newark Element14 AMERICA 405 0 Order Now
MOUSER WORLDWIDE 5889 1 Order Now
Farnell Element14 EUROPE 2082 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

5506

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1753

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

Newark Element14

Stock

405

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5889

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2082

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now HTSSOP16 Tape And Reel
Active
EAR99 PHILIPPINES 1.0 / 1k
L7987L Available at 5 distributors

Distributor availability ofL7987L

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1140 1 Order Now
ARROW EUROPE 1268 0 Order Now
ARROW AMERICA 6180 1920 Order Now
MOUSER WORLDWIDE 1803 1 Order Now
Farnell Element14 EUROPE 703 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

1140

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1268

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6180

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

1803

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

703

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now HTSSOP16 Tube
Active
EAR99 PHILIPPINES 1.0 / 1k

L7987LTR

Package

HTSSOP16

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.0 / 1k

Distributor availability ofL7987LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5506 1 Order Now
COMPEL EUROPE 1753 1 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
Newark Element14 AMERICA 405 0 Order Now
MOUSER WORLDWIDE 5889 1 Order Now
Farnell Element14 EUROPE 2082 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

5506

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1753

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

Newark Element14

Stock

405

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5889

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2082

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.0 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

L7987L

Package

HTSSOP16

Packing Type

Tube

Budgetary Price (US$)*/Qty

1.0 / 1k

Distributor availability ofL7987L

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1140 1 Order Now
ARROW EUROPE 1268 0 Order Now
ARROW AMERICA 6180 1920 Order Now
MOUSER WORLDWIDE 1803 1 Order Now
Farnell Element14 EUROPE 703 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

1140

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1268

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6180

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

1803

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

703

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.0 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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