TPS63802: Q1 Variant

Hello Carlos,

At the moment we do not have plans to release the TPS63802 as Q1 variant. But TPS63020-Q1 is already available. Please check if this is fulfilling the requirements of the system already.

Hi Brigitte,

I'm already suggesting that part to my customer - But they have the requirement for a part in EP or HR with a lower quiescent current for a second rail either directly from the battery with a buck/boost or from the output of the 020, operating as a buck.

Output current is roughly 1mA. Any recommendations?

Hello Carlos,

What is the needed voltage at the 1mA rail? What are the possible input voltages, as you suggest either direct from the battery or from the output of the TPS63020?

3.3V.

The input can either be from a lithium cell (2-4.3V) or the output of the TPS63020. But it needs to be available as Q1, Extended temp (military) or EP.

From what I gathered, using two 020's appears to be the only solution - but happy to hear about other options.

Hello Carlos,

Shall both output voltages be 3.3V? I still do not fully understand the system. If you do not want to share some data on E2E, you can use lbs_request@list.ti.com to send more details to.

Hello Carlos,

Do I understand correctly that the input voltage can go higher than 4.3V when the charger is applied?
For these low currents, TPS63020 is for sure an overkill and I think that it is more efficient to use an LDO on the output of the TPS63020 instead of 2 TPS63020.