I have a question regarding the LT8640S (specifically LT8640SEV#PBF and LT8640SIV#PBF).
According to the original datasheet I referenced during my board design, there was no explicit restriction on the output voltage (with the absolute maximum BIAS voltage rating of 25V):
https://www.analog.com/media/en/technical-documentation/data-sheets/lt8640s-8643s.pdf
However, a more recent version of the datasheet on Analog's website now states a maximum output voltage of 10V for the LT8640S/LT8643S (Output Voltage Range: 0.97V to 10V). This seems unusual because the peak-to-peak voltage at the SW pins (prior to the inductor) should theoretically be close to the input voltage (VIN).
https://www.analog.com/media/en/technical-documentation/data-sheets/lt8640s-lt8643s-lt8640sa-lt8643sa.pdf
Could you clarify this discrepancy? Was there a revision to the output voltage limitation, or is this a documentation error?
I have existing inventory (chips produced in 2021-2023) intended for an application requiring up to 20V output.
Question: Does the 10V limitation apply retroactively to older ICs, or was this a restriction introduced in newer batches?
Thank you for your assistance.
