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LM3481 IQ at UVLO=Low

Hiroshi Doi35
Expert 2845 points

Dear All,

I want to confirm that if UVLO = Low, the value of IQ is equal to FA/SYNC/SD pin = High.

Is this correct?

  • 0
    TI__Expert 6245 points
    Hello Hiroshi,

    If UVLO is low (<VUVLOSD ~0.7 V) or FA pin is high (>VDS ~ 1.4 V) than current consumption is IQ ~9 uA with 10 V input. Note that if UVLO > VUVLOSD but < VUVLOSEN ~ 1.4 V and FA is low, current consumption will be ~2 mA even though there is no switching.