I've been looking for the last few days but I just can't find one. I've found a ton of single cell protection IC's but I can't find one that does the same for up to 4 cells. A stackable single cell IC would work so that I can set them up in series to monitor multiple cells, if something like that exists. I just need something that can read the voltage and when one of the cells gets to ~3.3v, output a 3-5v analog or digital signal that I'll use as an input to a microcontroller. I don't have much space so the smaller the better!
Any help would be greatly appreciated!