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LM5157-Q1: UVLO pin unused

Shinji Tsuji
Genius 14229 points
Part Number: LM5157-Q1
Other Parts Discussed in Thread: LM5157

Hi team,

In order to save standby leakage current from resistor divider, I would not use UVLO feature and just connect to BIAS pin.

Is there any concern or care about if I don't use UVLO feature?

regards,

  • 0
    TI__Mastermind 23530 points

    Hi Shinji,

    With UVLO connected to BIAS, VCC serves as UVLO.

    When BIAS is less than 5V, VCC is almost same as BIAS. LM5157 operates when VCC is above 2.8V and shuts down when VCC is below 2.7V

    There is no problem with the IC. Please check this UVLO voltage is OK for the system.

    Best Regards,

    Feng Ji