Searching for an ultra-low-power 12V to 3V buck converter module

[dakhnod]

Hello,

For a personal, open-source project I need to regulate 12V down to 3V, while consuming as little power as possible (a few uA quiescent current at most) in order to control a motor via BLE, all on batteries.

While I was able to find ICs like the STBLW35, I am unable to find ready-to-use small boards/modules with those ICs.

To me, it seems like the field of ultra-low-power is quite novel for the open-source space. As such, I wanted to ask whether ST could

• Share insights about suitable modules with me
• Support me and my project with products/evaluation boards

Thank you for your time,

Kind regards,

Daniel Dakhno

[Andrew Neil]

---

@dakhnod wrote:

a personal, open-source project

---

Could you give some more details of this project?

"ultra low power" and "motor" is an intriguing combination ...

---

@dakhnod wrote:

• Support me and my project with products/evaluation boards

---

For that, you're probably best to contact your local sales office or distributor - see:

https://www.st.com/content/st_com/en/contact-us.html 

[TDK]

Look on Digikey for buck converters. I am sure you can find 100 or so that fit the 12 V -> 3 V requirement. Expect efficiency in the 80% range and way more than a few uA of quescient current. You will need to know how much maximum current it needs to produce.