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STMicroelectronics A7985ATR — Discrete Semiconductors

A7985ATR Automotive Buck Regulator, 2A, 38V Input, AEC-Q100

MPNA7985ATR
End of Life

STMicroelectronics A7985ATR, Automotive AEC-Q100, Step-Down Buck Regulator, Adjustable Output, 2A, 250kHz, 8-SOIC Exposed Pad, -40°C to 150°C.

$2.77Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width) Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

A7985ATR Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeAdjustable
Mounting typeSurface Mount
Voltage - input4.5V
Voltage - output38V
Voltage - output (Min (Fixed))0.6V
Current - output2A
Frequency250kHz
Number of outputs1
Operating temperature-40°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case8-SOIC (0.154\", 3.90mm Width) Exposed Pad
Output configurationPositive
Synchronous rectifierNo

Product details

Key ratings and what they mean for the BOM

The 2A output rating is continuous — the thermal pad needs a solid copper pour and vias to keep junction temperature under control at full load; a layout skimpy on copper will current-limit or thermally cycle before 2A.

Package and rework considerations

The exposed pad package is a rework-friendly footprint — the leads are visible and accessible with a hot-air station, and the exposed pad underneath gives you a thermal path to the board.

Lifecycle and sourcing

The A7985ATR is listed as Active in production and ROHS3 compliant.

Frequently asked questions

Is the A7985ATR AEC-Q100 qualified for automotive use?

Yes, the A7985ATR is part of the Automotive, AEC-Q100 series, meaning it is qualified for automotive applications including under-hood and chassis-domain environments.