A6984

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36 V 400 mA synchronous step-down switching regulator

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Product overview

Description

The A6984 is a step-down monolithic switching regulator able to deliver up to 400 mA DC. The output voltage adjustability ranges from 0.9 V. The fixed 3.3 V VOUT requires no external resistor divider. 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 almost constant over the load current range, serving low noise application specifications such as car audio/sensors. The PGOOD open collector output can 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 the low-side power element implements effective constant current protection. The package lead finishing guarantees side solderability, thus allowing visual inspection during manufacturing.
  • All features

    • AEC-Q100 qualified
    • 400 mA DC output current
    • 4.5 V to 36 V operating input voltage
    • Synchronous rectification
    • Low consumption mode or low noise mode
    • 75 µA IQ at light load (LCM VOUT = 3.3 V)
    • 13 µA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 600 kHz)
    • Output voltage adjustable from 0.9 V
    • No resistor divider required for 3.3 V VOUT
    • VBIAS maximizes efficiency at light load
    • 350 mA valley current limit
    • Constant on-time control scheme
    • PGOOD open collector
    • Thermal shutdown

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All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA200V1

      Active

      High efficiency synchronous step-down regulator based on the A6984

      PSU and Converter Solution Eval Boards ST
      STEVAL-ISA200V1

      Description:

      High efficiency synchronous step-down regulator based on the A6984

EDA Symbols, Footprints and 3D Models

STMicroelectronics - A6984

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A6984TR
Active
VFDFPN 4X4X1.0 10L PITCH 0.50 Automotive Ecopack2

A6984TR

Package:

VFDFPN 4X4X1.0 10L PITCH 0.50

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFDFPN 4X4X1.0 10L PITCH 0.50

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.

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
A6984TR Available at 2 distributors

Distributor availability ofA6984TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1489 1 Buy from Distributor
MOUSER WORLDWIDE 3319 1 Buy from Distributor

Distributor reported inventory date: 2021-10-07

Distributor Name

DIGIKEY

Stock

1489

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

3319

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-07

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel VFDFPN 4X4X1.0 10L PITCH 0.50 - - THAILAND 1.65 / 1k

A6984TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.65 / 1k

Distributor availability ofA6984TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1489 1 Buy from Distributor
MOUSER WORLDWIDE 3319 1 Buy from Distributor

Distributor reported inventory date: 2021-10-07

Distributor Name

DIGIKEY

Stock

1489

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

3319

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-07

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFDFPN 4X4X1.0 10L PITCH 0.50

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.65 / 1k

Country of Origin

THAILAND

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors