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LM51551-Q1: Current consumption in Standby mode

NOBUO FUJIHARA
Genius 9335 points
Part Number: LM51551-Q1

Hi team,

Can you provide max(worst case) current consumption while device is in Standby-mode?

best regards,

  • 0
    TI__Guru* 78220 points

    Hi Nobuo,

    It is given in the EC-table: WC max 540uA.

    Thanks,

    Youhao Xi, Applications Engineering

  • 0 in reply to Youhao Xi
    TI__Genius 9335 points

    Hi Youhao,

    Thanks for the prompt support.

    May I confirm below?

    According to 9.4.2 Standby Mode, device will enter Standby mode when UVLO is between enable threshold and ULVO threshold, but in EC-table, UVLO is in 2V.

    In VFB=VREF condition switching stops, so current consumption is same as Standby mode?

    Thanks,

  • 0 in reply to NOBUO FUJIHARA
    TI__Guru* 78220 points

    Hi Nobuo,

    UVLO is 1.5V typical in the EC-table.  Do we talk about the same parameter?

    The 540uA is for the condition the IC is enabled but it does not switch like VFB = or > VREF.   In Standby mode, the current can be lower because the oscillator, RT pin and the GM may not take much current as in the active mode, but we did not characterize that current. 

     

    Thanks,

    Youhao