LP2980 Datasheet, PDF (2/18 Pages) National Semiconductor (TI) – Micropower 50 mA Ultra Low-Dropout Regulator

January 8, 2009
LP2980
Micropower 50 mA Ultra Low-Dropout Regulator In SOT-23
Package
General Description
The LP2980 is a 50 mA, fixed-output voltage regulator de-
signed specifically to meet the requirements of battery-pow-
ered applications.
Using an optimized VIP^® (Vertically Integrated PNP) process,
the LP2980 delivers unequaled performance in all specifica-
tions critical to battery-powered designs:
Dropout Voltage. Typically 120 mV @ 50 mA load, and 7 mV
@ 1 mA load.
Ground Pin Current. Typically 375 μA @ 50 mA load, and
80 μA @ 1 mA load.
Sleep Mode. Less than 1 μA quiescent current when ON/
OFF pin is pulled low.
Minimum Part Count. Requires only 1 μF of external capac-
itance on the regulator output.
Precision Output. 0.5% tolerance output voltages available
(A grade).
5.0V, 4.7V, 3.3V, 3.0V and 2.5V versions available as stan-
dard products.
Features
■ ^{Ultra low dropout voltage}
■ ^{Output voltage accuracy 0.5% (A Grade)}
■ ^{Guaranteed 50 mA output current}
■ ^{Requires only 1 μF external capacitance}
■ < 1 μA quiescent current when shutdown
■ ^{Low ground pin current at all load currents}
■ ^{High peak current capability (150 mA typical)}
■ ^{Wide supply voltage range (16V max)}
■ ^{Fast dynamic response to line and load}
■ ^{Low Z}_OUT ^{over wide frequency range}
■ ^{Over-Temperature and Over-Current protection}
■ ^{−40°C to +125°C junction temperature range}
Applications
■ ^{Cellular Phone}
■ ^{Palmtop/Laptop Computer}
■ ^{Personal Digital Assistant (PDA)}
■ ^{Camcorder, Personal Stereo, Camera}
Block Diagram
VIP^® is a registered trademark of National Semiconductor Corporation.
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