What are the main differences between the 3 versions of the TPS2044 family of chips (TPS2044/TPS2044A/TPS2044B)?
They seem to all be for the same purpose and have similar specs. Is there a reason why a TPS2044A would not work where a TPS2044B would?
I'm primarily asking because I'm looking for alternate options due to chip shortages. I designed and tested with the B version, but like many (many) TI parts, it's impossible to find right now.
Thanks
Hi Adam，
These three device are the old device, and the TPS2044B is the newest one among them, and I do not have a detail difference between them, but I check their datasheet, and summary some point just like below show, hope it will help for you:
1.High-side MOSFET switch resistance are different, TPS2044:135mohm, TPS2044A:80mohm, TPS2044B:70mohm.
2.TPS2044B has a more short typical rise time. about 0.6ms, the other is 2.5 ms.
3.TPS2044B has a smaller 'Max standby supply current', about 2uA, the other is 20uA.
4.Ambient temperature range are different, TPS2044 and TPS2044B are -40℃~85℃, but TPS2044A is 0℃~85℃.
5.TPS2044B use a only one charge pump, and TPS2044A and TPS2044 use about four charge pump, so TPS2044B may be cheaper.
Best Regards,
Kuno
