Compensated voltage regulator

摘要

A compensated voltage regulator of the type used in programming non-volatile memory cells of a memory cell matrix that is divided into sectors. The voltage regulator includes a comparator that is connected to a supply voltage. A first input terminal of the comparator is supplied a reference voltage, and a second input terminal is feedback connected to a program line. The control terminal of an output transistor is connected to an output terminal of the comparator, and a conduction terminal of the output transistor is connected to the memory cells by the program line. An output current is passed through a conduction terminal of the output transistor. Further, a compensation circuit is powered by the supply voltage. An input of the compensation circuit is connected to the output terminal of the comparator and to the output transistor, and an output of the compensation circuit is also connected to the output terminal of the comparator. This causes the duplication of a current that is suitably attenuated with respect to the output current and is useful in modifying the output voltage of the comparator.