ZHCSI59I July 2009 – May 2018 TPS65070 , TPS65072 , TPS65073 , TPS650731 , TPS650732
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
The VDCDC3 pin must be directly connected to the DCDC3 converter's output voltage. The DCDC3 converter's output voltage can be selected through the DEFDCDC3 pin or optionally by changing the values in registers DEFDCDC3_LOW and DEFDCDC3_HIGH. If pin DEFDCDC3 is pulled to GND, register DEFDCDC3_LOW defines the output voltage. If the pin DEFDCDC3 is driven HIGH, register DEFDCDC3_HIGH defines the output voltage. Therefore, the voltage can either be changed between two values by toggling pin DEFDCDC3 or by changing the register values.
LDO2 can optionally be forced to follow the voltage defined for DCDC3 by setting Bit LDO2 TRACKING in register DEFLDO2.