Low consumption linear voltage regulator with high supply line rejection

摘要

A linear type of voltage regulator, having an input terminal (VBAT) adapted to receive a supply voltage thereon, and an output terminal (VOUT) adapted to deliver a regulated output voltage, comprises a power transistor (M1) and a driving circuit therefor; the driving circuit basically comprises an operational amplifier (OP) having a differential input stage biased by a bias current (Iop) which varies proportionally with the output current (Iload) of the regulator. <IMAGE>