LP3883
www.ti.com SNVS223F – NOVEMBER 2002 – REVISED APRIL 2013 LP3883 3A Fast-Response Ultra Low Dropout Linear Regulators
Check for Samples: LP3883 FEATURES DESCRIPTION The LP3883 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 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 2 Ultra Low Dropout Voltage (210 mV @ 3A typ)
Low Ground Pin Current
Load Regulation of 0.04%/A
60 nA Typical Quiescent Current in Shutdown
1.5% Output Accuracy (25В°C)
TO-220, DDPAK/TO-263 Packages
Over Temperature/over Current Protection
-40В°C to +125В°C Junction Temperature Range APPLICATIONS DSP Power Supplies …
