SLUSDU0 September 2019 BQ21061
The BQ21061 has a regulated system voltage output (PMID) that is programmable through I2C. PMID regulation is only active when the adapter is connected and VIN > VUVLO, VIN > VBAT _ VSLP and VIN < VOVP. In Battery Tracking operation (PMID_REG_CTRL = 000), the PMID voltage will be regulated to about 4.7% over battery level (VPMID = VBAT x 1.047) or 3.8 V, whichever is higher. Note that the PMID regulation target should be set to be at least 200mV higher than VBATREG.