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LM5122-Q1: Largest support FB resistors for lowest power consumption

Eric Fu1
Intellectual 1540 points
Part Number: LM5122-Q1

Dear Masters,

We are using LM5122-Q1 in Automotive infotainment project which requires ultra low standby current in shutdown mode. The VIN is from 6V-18V, Vout is above 12V. In order to keep the power dissipation on FB network, customer need to choose large values, but could you please suggest what is the largest value that we can try? And any calculating tools to tune to comp parameters when the FB network changed?

Thanks and looking forward to your feedback.

B&R

Eric.