Voltage follower and related method of regulation

摘要

A voltage follower includes a follower stage including first and second bipolar junction transistors connected in cascade, and a first current generator connected to the follower stage for biasing the first and second bipolar junction transistors. A cascode stage is connected between the first current generator and the first bipolar junction transistor, and a second current generator is connected between the first bipolar junction transistor and a first voltage reference. The voltage follower dissipates less power when the output current is small.