Electronic device, has switching element alternatingly switching driver between paths to provide voltage ranging from ground to supply voltage level to gate of power MOSFET transistor

摘要

The device has a low-dropout regulator providing a regulated output voltage. The regulator has a power MOSFET transistor (M3) with a gate that is coupled with a driver. The driver has paths that comprise n-type and p-type metal oxide semiconductor (MOS)-transistors (M1, M2) and that are coupled with the gate of the MOSFET-transistor. A switching element alternatingly switches the driver between the paths to provide a voltage ranging from a ground to a supply voltage level to the gate. One path has a control loop (I1) coupled between a switch (S1) of the element and the n-type transistor.