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LM53603: out of stock - recommendations for drop-in alternatives?

Part Number: LM53603
Other Parts Discussed in Thread: LMR33630, , LMR51430

To whom it may concern, my company uses TI part LM53603AMPWPR (or WPT suffix) to generate a 5 V supply for a load of up to 2.6 A and another almost identical circuit on the same PCA, to generate a 3.3 V supply for a load of up to 3 A.

This part is out of stock at the moment. 

Other than the automotive version (LM53603-Q1 which is also out of stock), can you please recommend any drop in alternatives in an HTSSOP 16 package.

Note, I have looked at the LM63635DQPWPRQ1 and it is almost a drop-in replacement, but it is also out of stock.

Kind regards,

-Sebastien A.