L7987L

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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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Part Number
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Budgetary Price (US$)*
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Country of Origin
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L7987LTR HTSSOP16 Tape And Reel
Active
1.0 1000 EAR99 - Check Availability

Distributor availability ofL7987LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6330 1 Order Now
COMPEL EUROPE 1979 1 Order Now
Newark Element14 AMERICA 625 0 Order Now
ARROW AMERICA 47500 2500 Order Now
MOUSER WORLDWIDE 5488 1 Order Now
Farnell Element14 EUROPE 994 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-01-20

Distributor Name

DIGIKEY

Stock

6330

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1979

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

625

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

47500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

5488

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

994

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-20

Buy now
L7987L HTSSOP16 Tube
Active
1.0 1000 EAR99 - Check Availability

Distributor availability ofL7987L

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1680 1 Order Now
ARROW EUROPE 678 0 Order Now
ARROW AMERICA 6180 1920 Order Now
MOUSER WORLDWIDE 2158 1 Order Now
Farnell Element14 EUROPE 787 1 Order Now

Distributor reported inventory date: 2020-01-20

Distributor Name

DIGIKEY

Stock

1680

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

678

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6180

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

2158

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

787

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-20

Buy now

L7987LTR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

1.0*

Distributor availability ofL7987LTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6330 1 Order Now
COMPEL EUROPE 1979 1 Order Now
Newark Element14 AMERICA 625 0 Order Now
ARROW AMERICA 47500 2500 Order Now
MOUSER WORLDWIDE 5488 1 Order Now
Farnell Element14 EUROPE 994 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-01-20

Distributor Name

DIGIKEY

Stock

6330

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1979

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

625

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

47500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

5488

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

994

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-20

Marketing Status

Active

Unit Price (US$)

1

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

L7987L

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

1.0*

Distributor availability ofL7987L

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1680 1 Order Now
ARROW EUROPE 678 0 Order Now
ARROW AMERICA 6180 1920 Order Now
MOUSER WORLDWIDE 2158 1 Order Now
Farnell Element14 EUROPE 787 1 Order Now

Distributor reported inventory date: 2020-01-20

Distributor Name

DIGIKEY

Stock

1680

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

678

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6180

Min.Order

1920

Region

AMERICA Order Now

MOUSER

Stock

2158

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

787

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-01-20

Marketing Status

Active

Unit Price (US$)

1

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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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
      3.0
      2.56 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

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.

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