LP2967 datasheet(2/20 Pages) TI1

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LP2967

Dual Micropower 150 mA Low-Dropout Regulator in

micro SMD Package

General Description

The LP2967 is a 150 mA, dual fixed-output voltage regulator

designed to provide ultra low-dropout and low noise in bat-

tery powered applications.

Using an optimized VIP (Vertically Integrated PNP) process,

the LP2967 delivers unequalled performance in all specifi-

cations critical to battery powered designs:

Dropout Voltage: Typically 240 mV at 150 mA load, and

6 mV at 1 mA load for each output.

Ground Pin Current: Typically 1 mA at 150 mA load, and

200 µA at 1 mA load for each output.

Enhanced Stability: The LP2967 is stable with output ca-

pacitor ESR as low as 5 m

Ω, which allows the use of ceramic

capacitors on the output.

Sleep Mode: Less than 2 µA quiescent current when SD

pins are pulled low.

Smallest Possible Size: micro SMD package uses absolute

minimum board space.

Precision Output: 1.25% tolerance.

Low Noise: By adding a 100 nF bypass capacitor, output

noise can be reduced to 30 µV (typical).

Multiple voltage options, from 1.8V to 5.0V, are available.

Consult factory for custom voltages.

Features

Ultra low drop-out voltage

Guaranteed 150mA output current, 300 mA peak

Smallest possible size (micro SMD package)

Requires minimum external components

Stable with 2.2 µF tantalum or ceramic capacitor

Output voltage accuracy ±1%

n <

2 µA quiescent current when shut down

Wide supply voltage range (16V max.)

Low Z

OUT: 0.3

Ω typical (10 Hz to 1 MHz)

Over temperature/over current protection

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

Custom voltages available

Applications

Cellular Phone

Palmtop/Laptop Computer

Personal Digital Assistance (PDA)

Camcorder, Personal Stereo and Camera

Block Diagram

10114201

June 2005

DS101142

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