LP2980

Micropower 50 mA Ultra Low-Dropout Regulator

General Description

The LP2980 is a 50 mA, fixed-output voltage regulator de-

signed

specifically

to

meet

the

requirements

of

battery-powered applications.

cess, the LP2980 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 an absolute minimum board space.

Minimum Part Count. Requires only 1 µF of external ca-

pacitance on the regulator output.

Precision Output. 0.5% tolerance output voltages available

(A grade).

5.0V, 3.3V, and 3.0V versions available as standard prod-

ucts.

Features

n

Ultra low dropout voltage

n

Output voltage accuracy 0.5% (A Grade)

n

Guaranteed 50 mA output current

n

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

n

Requires only 1 µF external capacitance

1 µA quiescent current when shutdown

n

Low ground pin current at all load currents

n

High peak current capability (150 mA typical)

n

Wide supply voltage range (16V max)

n

Fast dynamic response to line and load

n

Low Z

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

Connection Diagram and Ordering Information

DS012078-1

5-Lead Small Outline Package (M5)

DS012078-3

Top View

See NS Package Number MF05A

For ordering information see

Table 1

micro SMD, 5 Bump Package (BPA05)

DS012078-60

Bottom View

See NS Package Number BPA05

April 2000

© 2000 National Semiconductor Corporation

DS012078

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