Stabilized low dropout voltage regulator circuit

摘要

A voltage regulator circuit is set forth in which the series pass transistor has its high impedance (collector/drain) electrode connected to the output terminal and a shunt transistor has its low impedance (emitter/source) electrode connected to the output terminal. The circuit is arranged to ensure that the shunt transistor is always conductive so that its low impedance electrode will stabilize the operation of the circuit without requiring any external components. The circuit can be fabricated in either bipolar or CMOS form and a low dropout configuration is employed.