A6985F

Active
Education

Automotive 38 V, 500 mA synchronous step-down switching regulator with 30 uA quiescent current

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  • The A6985F automotive grade device is a step-down monolithic switching regulator able to deliver up to 0.5 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
    • 0.5 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • 30 μA IQat light-load (LCM VOUT = 3.3 V)
    • 8 μA IQ-SHTDWN
    • Fixed output voltage (3.3 V and 5 V) or adjustable from 0.85 V to VIN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDSON HS = 360 mΩ, RDSON LS = 150 mΩ
    • Thermal shutdown

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Related Applications

Lighting and Controls

ADAS

Electro Mobility

In-Vehicle Infotainment (IVI)

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA186V1

      Active

      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F5V

      PSU and Converter Solution Eval Boards ST

      STEVAL-ISA187V1

      Active

      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F

      PSU and Converter Solution Eval Boards ST
      STEVAL-ISA186V1

      Description:

      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F5V
      STEVAL-ISA187V1

      Description:

      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A6985F
Active
HTSSOP16 Automotive Ecopack1 (*)
A6985F3V3
Active
HTSSOP16 Automotive Ecopack1
A6985F3V3TR
Active
HTSSOP16 Automotive Ecopack1
A6985F5V
Active
HTSSOP16 Automotive Ecopack1 (*)
A6985F5VTR
Active
HTSSOP16 Automotive Ecopack1 (*)
A6985FTR
Active
HTSSOP16 Automotive Ecopack1 (*)

A6985F

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1 (*)

A6985F3V3

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1

A6985F3V3TR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1

A6985F5V

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1 (*)

A6985F5VTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1 (*)

A6985FTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack1 (*)

(**) 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

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

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
A6985F3V3TR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel HTSSOP16 - - PHILIPPINES 1.5 / 1k
A6985FTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel HTSSOP16 - - PHILIPPINES 1.5 / 1k
A6985F Available at 1 distributors

Distributor availability ofA6985F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1920 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

MOUSER

Stock

1920

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tube HTSSOP16 - - PHILIPPINES 1.5 / 1k
A6985F5VTR No availability of distributors reported, please contact our sales office Buy Direct
Active
EAR99 NEC Tape And Reel HTSSOP16 - - PHILIPPINES 1.5 / 1k
A6985F3V3 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tube HTSSOP16 - - PHILIPPINES 1.5 / 1k
A6985F5V No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tube HTSSOP16 - - PHILIPPINES 1.5 / 1k

A6985F3V3TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

PHILIPPINES

A6985FTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

PHILIPPINES

A6985F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

Distributor availability ofA6985F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1920 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

MOUSER

Stock

1920

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tube

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

PHILIPPINES

A6985F5VTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

PHILIPPINES

A6985F3V3

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

ECCN (EU)

NEC

Packing Type

Tube

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 1k

Country of Origin

PHILIPPINES

A6985F5V

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.5 / 1k

ECCN (EU)

NEC

Packing Type

Tube

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.5 / 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