Output circuit having at least one external transistor

摘要

An output circuit has first and second transistors (QE1, QE2) arranged between first and second power sources (V1, V2). At least one of the first and second transistors (QE1, QE2) is an external transistor. A resistor (Rp) and a diode (Dp) are connected in parallel between a first terminal of the first transistor (QE1) and a first terminal of the second transistor (QE2). The resistor (Rp) and diode (Dp) minimize a fluctuation in an output idle current and improve the range of the output voltage when there is a load current. <MATH>