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TPS61196: How much current is required on VIN pin while all the IFBx pins are sinking current?

Part Number: TPS61196

Dear Sirs or Madams,

The datasheet says that "Operating quiescent current into VIN" is 2mA at Maximum.

But, this value is the current needed at no switching, which means that IFBx pins do NOT sink current.

And, I want to know how much current will be needed on VIN pin when all the IFBx pins are sinking current.

I guess the current value will depend on the operational conditions, e.g. PWM dimming, VIN voltage etc, and it is difficult to acquire the precise Maximum value. 

So, even rough value would be helpful for me. Will the current be increased to 100mA or more at Maximum?  Or, will it be increased to just 10mA or less at Maximum?

Best regards,

Shinsuke Tanaka