LP3881 0.
8A Fast-Response Ultra Low Dropout Linear
Regulators
August 2003
LP3881 0.
8A Fast-Response Ultra Low Dropout Linear
Regulators
General Description
The LP3881 is a high current, fast response
regulator which can maintain output voltage regulation with minimum input to output voltage drop.
Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power
transistor, while Vin is the input voltage which supplies power to the load.
The use of an external bias rail allows the part to operate from ultra low Vin voltages.
Unlike bipolar
regulators, the CMOS architecture consumes extremely low quiescent current at any ou...