I was recently searching for NiMH charging ICs, turns out they basically don't exist. Most devices which charge their NiMH batteries implement low CC charging, which is slow. It's a shame, because NiMH batteries do have their advantages (safety, ease of finding replacements, etc.) and can be recharged fairly quickly if the charger is smart enough.
I'm not sure what IC they use, but it uses a two-line text display and can switch between Lipo, LiFE, NiMH, NiCD, Pb, and a few other modes, and some of them allow adjustable cutoff voltage, max charge time, etc. That's just a cheap 80W model but there are 200W+ chargers that use the same interface.
I was recently searching for NiMH charging ICs, turns out they basically don't exist. Most devices which charge their NiMH batteries implement low CC charging, which is slow. It's a shame, because NiMH batteries do have their advantages (safety, ease of finding replacements, etc.) and can be recharged fairly quickly if the charger is smart enough.
In the RC vehicle world, these things have been prevalent for about a decade now: https://www.amazon.com/Battery-Charger-Balance-Discharger-Ba...
I'm not sure what IC they use, but it uses a two-line text display and can switch between Lipo, LiFE, NiMH, NiCD, Pb, and a few other modes, and some of them allow adjustable cutoff voltage, max charge time, etc. That's just a cheap 80W model but there are 200W+ chargers that use the same interface.
There are also 18650 cell chargers that can also take NiMH AA/AAA and charge them at high currents, like this: https://www.amazon.com/NITECORE-UMS4-Intelligent-LumenTac-Or...
What do you mean by "they basically don't exist"? Solutions like the TI BQ25172 are designed exactly for this purpose.