LP2981 Datasheet, PDF (1/16 Pages) National Semiconductor (TI) – Micropower 100 mA Ultra Low-Dropout Regulator

March 2000
LP2981
Micropower 100 mA Ultra Low-Dropout Regulator
General Description
The LP2981 is a 100 mA, fixed-output voltage regulator de-
signed specifically to meet the requirements of
battery-powered applications.
Using an optimized VIP™ (Vertically Integrated PNP) pro-
cess, the LP2981 delivers unequaled performance in all
specifications critical to battery-powered designs:
Dropout Voltage. Typically 200 mV @ 100 mA load, and
7 mV @ 1 mA load.
Ground Pin Current. Typically 600 µA @ 100 mA load, and
80 µA @ 1 mA load.
Sleep Mode. Less than 1 µA quiescent current when ON/
OFF pin is pulled low.
Smallest Possible Size. SOT-23and micro SMD packages
use an absolute minimum board space.
Precision Output. 0.75% tolerance output voltages avail-
able (A grade).
Eleven voltage options, from 2.5V to 5.0V, are available as
standard products.
Features
n Ultra low dropout voltage
n Output voltage accuracy 0.75% (A Grade)
n Guaranteed 100 mA output current
n Smallest possible size (SOT-23, micro SMD package)
n < 1 µA quiescent current when shutdown
n Low ground pin current at all load currents
n High peak current capability (300 mA typical)
n Wide supply voltage range (16V max)
n Fast dynamic response to line and load
n Low Z_OUT over wide frequency range
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistant (PDA)
n Camcorder, Personal Stereo, Camera
Block Diagram
DS012506-1
VIP™ is a trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation DS012506
www.national.com