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LM5149: how to just use AEF

Given Ding
Expert 8455 points
Part Number: LM5149
Other Parts Discussed in Thread: TPSF12C1-Q1

Hi Team, 

my customer just want to use AEF function. Please kindly help guide on how to use AEF and disable buck function. Thanks.

I read the datasheet but still confused on this, also, CNFG is pulled high or low automatically by detecting load? if so, how to just enable AEF but disable DCDC. Thanks. 

BRs

Given