6.1 Device Operation

The IS2083BM SoC is powered through the BAT_IN input pin. The external 5V power adapter can be connected to the ADAP_IN pin to charge the battery.

For normal operation, it is recommend to use the BAT_IN pin to power the IS2083BM SoC and ADAP_IN only for charging the battery. The following figure illustrates the connection from the BAT_IN pin to other voltage supply pins of the IS2083BM. The IS2083BM has two buck switching regulators:
  • Buck1 DC/DC regulator provides 1.5V and is used to supply power to RF and baseband.
  • Buck2 DC/DC regulator provides 1.8V and is used to supply power to I/O pads and internal codec.
Figure 6-1. Power Tree Diagram