STMicroelectronics is a large and prolific purveyor of all sorts of electronics of the micro variety, including their LDO LF80ABDT-TR. This part number can also be found in the form LF80CDT-TR, and customers sometimes ask us what the difference between these two is as they appear parametrically very similar. Is there a key, crucial difference?
Whether or not the difference is crucial is up to your design, but in this case STMicro has confirmed that the ‘AB’ product is a 1% tolerance part, while the ‘C’ is a 2% tolerance part. There is no specified marking difference between the two at this time.