LP2982

Micropower 50 mA Ultra Low-Dropout Regulator

General Description

The LP2982 is a 50 mA, fixed-output voltage regulator de-

signed to provide ultra low dropout and lower noise in battery

powered applications.

cess, the LP2982 delivers unequaled performance in all

specifications critical to battery-powered designs:

Sleep Mode: Less than 1 µA quiescent current when on/off

pin is pulled low.

Smallest Possible Size: SOT-23 and micro SMD packages

use absolute minimum board space.

Precision Output: 1.0% tolerance output voltages available

(A grade).

Low Noise: By adding an external bypass capacitor, output

noise can be reduced to 30 µV (typical).

Ten output voltage versions, from 2.5V to 5.0V, are available

as standard products.

Features

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Ultra low dropout voltage

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Guaranteed 50 mA output current

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Smallest possible size (SOT-23, micro SMD package)

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Requires minimum external components

1 µA quiescent current when shutdown

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Low ground pin current at all loads

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Output voltage accuracy 1.0% (A Grade)

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High peak current capability (150 mA typical)

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Wide supply voltage range (16V max)

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Low Z

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Overtemperature/overcurrent protection

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−40˚C to +125˚C junction temperature range

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Custom voltages available

Applications

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Cellular Phone

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Palmtop/Laptop Computer

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Personal Digital Assistant (PDA)

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Camcorder, Personal Stereo, Camera

Block Diagram

DS012679-1

March 2000

© 2000 National Semiconductor Corporation

DS012679

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