
BMS
LauriAlanen/BMS
BMS for 4S LiFePO4 battery packs running on the STM32L152RE. Features a custom FreeModbus port and a Dockerized Python telemetry stack.

The LMV331ILT is a comparator made by STMicroelectronics in a SOT-23-5 package with 5 pins. -40℃~+85℃ 1 1mV 1nA 2.7V~5V 200ns 20uA 25nA 5.5V 5uV/℃ Open-drain SOT-23-5 Comparators ROHS.
PCBKit's library has its KiCad symbol (Comparator:LMV331, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 1,023 are in stock at JLCPCB (part C672259). 2 open-source boards in 2 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | + | Input |
| 2 | V- | Power in |
| 3 | - | Input |
| 4 | — | Open collector |
| 5 | V+ | Power in |

LauriAlanen/BMS
BMS for 4S LiFePO4 battery packs running on the STM32L152RE. Features a custom FreeModbus port and a Dockerized Python telemetry stack.

<iframe src="https://pcbkit.io/embed/parts/st/LMV331ILT" title="LMV331ILT in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/LMV331ILT.jpg" alt="LMV331ILT" width="1200" height="900">[](https://pcbkit.io/parts/st/LMV331ILT)Yes. The symbol is Comparator:LMV331 and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOT-23-5, with 5 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C672259, with 1,023 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the LMV331IDBV by Texas Instruments, the TLV7031DBV by Texas Instruments, the LMV331TP-TR by 3PEAK and the RS8901XF by Jiangsu RUNIC Tech. Check their datasheets: a part that fits the footprint may still differ in its ratings.
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.