SPRUIW4 October 2021 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1
The F28002x and F28003x devices have a few different options for power. F28003x supports dual-rail (3.3 V and 1.2 V) or single-rail (3.3 V) with the internal LDO VREG providing the 1.2 V rail. F28002x only supports single-rail (3.3 V) with the internal LDO VREG providing the 1.2 V rail. This section describes the power management differences and similarities between the two devices.