38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current

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  • The A6986H automotive grade device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.85 V to VIN. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. The “low consumption mode” (LCM) is designed for applications active during car parking, so it maximizes the efficiency at light-load with controlled output voltage ripple. The “low noise mode” (LNM) makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the low noise application specification like car audio. The output voltage supervisor manages the reset phase for any digital load (µC, FPGA). The RST open collector output can also implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse by pulse current sensing on both power elements implements an effective constant current protection.

    Key Features

    • AEC-Q100 qualified
    • 2 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • 30 µA IQ at light-load (LCM VOUT = 3.3 V)
    • 8 µA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Fixed output voltage (3.3 V and 5 V) or adjustable from 0.85 V to VIN
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
    • Thermal shutdown

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Part Number
Package
Packing Type
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Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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A6986H5VTR HTSSOP16 Tape And Reel
Active
- - EAR99 - No availability of distributors reported, please contact our sales office
A6986H3V3 HTSSOP16 Tube
Active
- - EAR99 - No availability of distributors reported, please contact our sales office
A6986H5V HTSSOP16 Tube
Active
- - EAR99 - No availability of distributors reported, please contact our sales office
A6986H HTSSOP16 Tube
Active
1.7 10000 EAR99 - No availability of distributors reported, please contact our sales office
A6986H3V3TR HTSSOP16 Tape And Reel
Active
- - EAR99 - No availability of distributors reported, please contact our sales office
A6986HTR HTSSOP16 Tape And Reel
Active
- - EAR99 - Check Availability

Distributor availability ofA6986HTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1000 1 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 1000 1 Order Now
MOUSER WORLDWIDE 987 1 Order Now

Distributor reported inventory date: 2019-11-20

Distributor Name

DIGIKEY

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

987

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-20

Get sample

A6986H5VTR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

*

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

A6986H3V3

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

*

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

A6986H5V

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

*

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

A6986H

Package

HTSSOP16

Packing Type

Tube

Unit Price (US$)

1.7*

Marketing Status

Active

Unit Price (US$)

1.7

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

A6986H3V3TR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

*

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

A6986HTR

Package

HTSSOP16

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofA6986HTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1000 1 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 1000 1 Order Now
MOUSER WORLDWIDE 987 1 Order Now

Distributor reported inventory date: 2019-11-20

Distributor Name

DIGIKEY

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

987

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-20

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

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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Technical Documentation

    • Description Version Size Action
      DS12861
      Automotive 38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
      1.0
      17.61 MB
      PDF
      DS12861

      Automotive 38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A6986H
Active
HTSSOP16 Automotive Ecopack2
A6986H3V3
Active
HTSSOP16 Automotive Ecopack2
A6986H3V3TR
Active
HTSSOP16 Automotive Ecopack2
A6986H5V
Active
HTSSOP16 Automotive Ecopack2
A6986H5VTR
Active
HTSSOP16 Automotive Ecopack2
A6986HTR
Active
HTSSOP16 Automotive Ecopack2

A6986H

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A6986H3V3

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A6986H3V3TR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A6986H5V

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A6986H5VTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A6986HTR

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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