A7987

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61 V 3A asynchronous step-down switching regulator with adjustable current limitation for automotive

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  • The A7987 is a step-down monolithic switching regulator that can deliver up to 3 A DC. The adjustable output voltage ranges from 0.8 V to VIN. The wide input voltage range and the almost 100% duty cycle capability meet the fail-safe specifications for automotive systems. The embedded switch-over feature on the VBIAS pin maximizes efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current in accordance 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 fold-back implements an effective constant current protection over the different application conditions. The peak current fold-back decreases the stress of the power components in heavy short-circuit conditions. The PGOOD open collector output can also implement the output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise for low noise requirements such as in infotainment applications.

    Key Features

    • 3 A DC output current
    • 4.5 V to 61 V operating input voltage
    • Adjustable fsw (250 kHz to 1.5 MHz)
    • Output voltage adjustable from 0.8 V to VIN
    • Synchronization
    • Adjustable soft-start time
    • Adjustable current limitation
    • VBIAS improves efficiency at light load
    • PGOOD open collector output
    • Digital frequency fold-back in short-circuit
    • Auto-recovery thermal shutdown
    • Qualified following AEC-Q100 requirements

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Related Applications

ADAS

In-Vehicle Infotainment (IVI)

Telematics and Networking

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA207V1

      Active

      3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

      Automotive IC Eval Boards ST
      STEVAL-ISA207V1

      Description:

      3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

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STMicroelectronics - A7987

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A7987TR
Active
HTSSOP16 Automotive Ecopack2

A7987TR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

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.

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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]

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Sample & Buy

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ECCN (US)
ECCN (EU)
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Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
A7987TR Available at 5 distributors

Distributor availability ofA7987TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5378 1 Order Now
AVNET AMERICA 1000 0 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1745 1 Order Now
Farnell Element14 EUROPE 268 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

5378

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1745

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

268

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel HTSSOP16 - - PHILIPPINES 2.0 / 1k

A7987TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.0 / 1k

Distributor availability ofA7987TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5378 1 Order Now
AVNET AMERICA 1000 0 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1745 1 Order Now
Farnell Element14 EUROPE 268 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

5378

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1745

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

268

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

2.0 / 1k

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