Voltage regulator including CMOS transconductance amplifier with dynamic biasing

摘要

The subject-matter of the invention is a CMOS transconductance amplifier with a dynamic operating point, which has a low quiescent-current consumption (io) for a voltage/current converter (ui). On the other hand, the current yield of the output transistor (tr) in a current-balancing output circuit (p1) is high for a load current (il). The low quiescent current consumption is the result of connecting an output transistor (ta), connected as a low-impedance diode, in parallel with an active load (al) in the current output of the voltage/current converter (ui). The high current yield is achieved by a positive feedback circuit (mk) which adds a load-current-proportional auxiliary current (ip) to the quiescent current (io) of the voltage/current converter (ui) and thus produces a dynamic operating point.