I am working on a PCB with a TPS3613-01 supervisor IC to switch from 3.3V VDD to 3.0 V VBATT. Shortly after the VDD power is removed I am seeing a current surge on VBATT. The static current on VBATT is about 3 mA and the surge is up to about 6 mA. The current surge appears to be 1 to 10 ms in duration. I am in the process of measuring the current at VOUT. In the meantime I am wondering whether the TPS3613-01 could be causing the current surge.
Thanks.
Tom