shop/ circuitrocks/ 12v, 9a step-down voltage regulator d42v110f12

Pololu D42V110F12 - compact, high-power 12V buck regulator. Steps a 12V to 60V input down to a fixed 12V, delivering up to about 9A at 42V input depending on airflow, load, and heat.

Good for robotics, motor systems, battery builds, and LED projects that need an efficient 12V rail from a higher-voltage source. Synchronous buck design runs typically above 90% efficient.

Specs

Brand Pololu
Item No. 5677
Model D42V110F12
Type Synchronous step-down (buck)
Input Voltage 12V to 60V DC
Output Voltage 12V fixed, ±3%
Max Output Current About 9A at 42V input (depends on conditions)
Efficiency Typically above 90%
Switching Frequency About 800kHz under heavy load
No-Load Quiescent Typically under 0.3mA
Protections Reverse-voltage, over-current, thermal shutdown
Board Size 31.8mm × 43.2mm × 9mm
Mounting 4 holes for #2 or M2 screws

Step-down only - input must stay above 12V plus dropout at your load. Can get hot; don't touch while powered.

FAQ

Will this ship from Manila?

Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.

Do you ship nationwide?

Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.

Can I get this on a school PO or class order?

Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.

Is this compatible with Arduino, ESP32, or Raspberry Pi?

Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.

What's your return policy?

7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.

Do you offer technical support?

Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.

Build with this board

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Notes from the bench

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