LP2985ITPX-1.8 datasheet(1/17 Pages) TI

Part #	LP2985ITPX-1.8

Description	Micropower 150 mA Low-Noise Low-Dropout Regulator

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Manufacturer	TI [Texas Instruments]

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LP2985LV

Micropower 150 mA Low-Noise Low-Dropout Regulator

in SOT-23 and micro SMD packages for Applications

with Output Voltages

≤ 2.3V

Designed for Use with Very Low ESR Output Capacitors

General Description

The LP2985LV is a 150 mA, fixed-output voltage regulator

designed to providehigh performance and low noise in ap-

plications requiring output voltages < 2.3V.

Using an optimized VIP™ (Vertically Integrated PNP) pro-

cess, the LP2985LV delivers unequalled performance in all

specifications critical to battery-powered designs:

Ground Pin Current: Typically 825 µA @ 150 mA load, and

75 µA @ 1 mA load.

Enhanced Stability: The LP2985LV is stable with output

capacitor ESR as low as 5 m

Ω, which allows the use of

ceramic capacitors on the output.

Sleep Mode: Less than 1 µA quiescent current when ON/

OFF pin is pulled low.

Smallest Possible Size: micro SMD package uses absolute

minimum board space.

Precision Output: 1% tolerance output voltages available

(A grade).

Low Noise: By adding a 10 nF bypass capacitor, output

noise can be reduced to 30 µV (typical).

Features

n

Guaranteed 150 mA output current

n

Smallest possible size (micro SMD)

n

Requires minimum external components

n

Stable with low-ESR output capacitor

n <

1 µA quiescent current when shut down

n

Low ground pin current at all loads

n

Output voltage accuracy 1% (A Grade)

n

High peak current capability

n

Wide supply voltage range (16V max)

n

Low Z

OUT: 0.3

Ω typical (10 Hz to 1 MHz)

n

Overtemperature/overcurrent protection

n

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

n

Custom voltages available

Applications

n

Cellular Phone

n

Palmtop/Laptop Computer

n

Personal Digital Assistant (PDA)

n

Camcorder, Personal Stereo, Camera

Block Diagram

10129501

VIP™ is a trademark of National Semiconductor Corporation.

June 2004

DS101295

www.national.com

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LP2985ITPX-1.8 Datasheet(PDF) 1 Page - Texas Instruments

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