TPS2501 Quiescent Question

Jerry Chu

Other Parts Discussed in Thread: TPS2501

Hi,

I can't complete understanding the Iq for TPS2501. VAUX is an output to USB pin. If the VAUX Iq is 380uA, the Vin Iq should be 665uA.

380uA*5.2V/90%/3.3=665.3uA, Vin Iq = 13uA+665.3uA=678uA. Am I right?

over 12 years ago

0 Eric Wright over 12 years ago

TI__Mastermind 42795 points

For this test, 5.2V is applied to AUX (no switching occurs) and 380uA (typical) flows into the IC. So, the AUX quiescent current does not flow into the IN pin for this case.

0 Jerry Chu over 12 years ago in reply to Eric Wright

Genius 4915 points

So, how to know the total Iq? The condition is when the input is 3.3V, with switching and enable USB? Thanks!

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TPS2501 Quiescent Question