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Documents LP38856
SNVS336F – JUNE 2006 – REVISED AUGUST 2015 LP38856 3-A Fast-Response High-Accuracy LDO Linear Regulator With Enable
1 Features 3 Description The LP38856 is a high-current, fast-response
regulator which can maintain output voltage
regulation with an extremely low input-to-output
voltage drop. Fabricated on a CMOS process, the
device operates from two input voltages: VBIAS
provides power for the internal bias and control
circuits, as well as drive for the gate of the N-MOS
power transistor, while VIN 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 output load
current. The use of an N-MOS power transistor
results in wide bandwidth, yet minimum external
capacitance is required to maintain loop stability. 1 Input Voltage: 1.1 V to 5.5 V
Wide VBIAS Supply Operating Range: 3 V to 5.5 V …
