
Panelized watch
HolTyc/STM32_watch_NFC
Watch using STM32 with LED 7-segment display and RGB display
Texas InstrumentsExtended
-40℃~+125℃@(TJ) 1 11uA 1MHz 2.3V~4.5V 3.5A 5.1V Boost Boost Built-in Fixed Yes VQFN-9(2.5x2.5) DC-DC Converters ROHS
The TPS61235PRWLR is a DC DC Converter made by Texas Instruments in a VQFN-9(2.5x2.5) package with 9 pins. -40℃~+125℃@(TJ) 1 11uA 1MHz 2.3V~4.5V 3.5A 5.1V Boost Boost Built-in Fixed Yes VQFN-9(2.5x2.5) DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (Celestial_Power_Switchmode:TI TPS61235PRWL, from Altium's library) and its footprint (EasyEDA_Cloud:VQFN-9_L2.5-W2.5-P0.50-TL, from EasyEDA), ready for a KiCad board. 2,892 are in stock at JLCPCB (part C544673). 4 open-source boards in 3 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | PGND | Passive |
| 2 | SW | Passive |
| 3 | VIN | Passive |
| 4 | CC | Passive |
| 5 | AGND | Passive |
| 6 | FB | Passive |
| 7 | EN | Passive |
| 8 | INACT | Passive |
| 9 | VOUT | Passive |

HolTyc/STM32_watch_NFC
Watch using STM32 with LED 7-segment display and RGB display

Studented0/universal-ai-terminal
A pocketable AI terminal that runs Claude Code and Ollama over LTE. Custom carrier board for a Raspberry Pi Compute Module 5, 7" AMOLED touchscreen, and its own cellular modem so it doesn't need WiFi.

HolTyc/STM32_watch_NFC
Watch using STM32 with LED 7-segment display and RGB display

Yes. The symbol is Celestial_Power_Switchmode:TI TPS61235PRWL and the footprint EasyEDA_Cloud:VQFN-9_L2.5-W2.5-P0.50-TL, both drawn on this page. PCBKit places them on a board for you when you design with it.
VQFN-9(2.5x2.5), with 9 pins. Its footprint is drawn on this page.
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C544673, with 2,892 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the TPS61235PRWLT by Texas Instruments, the RT6258CGQUF by Richtek Tech, the L4973D5.1 by STMicroelectronics and the RT6228CGQUF by Richtek Tech. Check their datasheets: a part that fits the footprint may still differ in its ratings.
4 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.