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LM27403: Error Amplifier Bandwidth

Part Number: LM27403

Team,

Looking into the bandwidth limitation on the LM27403 and see in the datasheet that gain-bandwidth product isn’t directly listed. Instead it seems to be called out as the open-loop bandwidth (see datasheet snippet below). Am I to take this to mean the Gain-Bandwidth Product is ~1.9GHz? This seems initially very unrealistic to me. Can you confirm?