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TPS25730: Power dissipation of 3.3V LDO powered from VBUS

Koshi Ninomiya
Expert 5435 points
Part Number: TPS25730

Dear Team,

My customer is considering to use the TPS25730D under standalone condition in their applicaiton without Battery. So, it is always in a dead-battery condition. I saw the following thread.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1339124/tps25730-help-with-vin-3v3-pin?tisearch=e2e-sitesearch&keymatch=TPS25730#

It says "The TPS25730 does not include the capability to clear the dead-battery flag, so the TPS25730 will always be powered from VBUS through its internal 3.3V LDO."

The maximum load current of the 3.3V LDO powered from VBUS is 6mA, right?

When VBUS=20V, the maximum power dissipation will be (20V-3.3V)*6mA=100mW. This 100mW (max) power dissipation of the LDO powered from VBUS is no problem for the reliability of the TPS25730D, right?
Thank you.

Best Regards,

Koshi Ninomiya