Integrated circuit producing power supply independent logic levels without regulators in the power section and a corresponding communication module.

摘要

The circuit has a distribution unit distributing a supply voltage and a transistor (TP2) generating an internal reference voltage that is less than the supply voltage. A power transistor (TP0) (31) connects the supply voltage to a universal serial bus (USB) output of the circuit. A transistor (TP1) (32) limits output voltage according to the reference voltage to provide a preset output voltage representing a logic level.