LP2985AIM5-3.3+ National Semiconductor, LP2985AIM5-3.3+ Datasheet

LP2985AIM5-3.3+

Manufacturer Part Number

LP2985AIM5-3.3+

Description

Manufacturer

National Semiconductor

Datasheet

1.LP2985AIM5-2.8.pdf (22 pages)

Specifications of LP2985AIM5-3.3+

Notes

NEW

Date_code

10+

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LP2985

Micropower 150 mA Low-Noise Ultra Low-Dropout

Regulator in SOT-23 and micro SMD Packages

Designed for Use with Very Low ESR Output Capacitors

General Description

The LP2985 is a 150 mA, fixed-output voltage regulator de-

signed to provide ultra low-dropout and low noise in battery

powered applications.

Using an optimized VIP

the LP2985 delivers unequalled performance in all specifica-

tions critical to battery-powered designs:

Dropout Voltage: Typically 300 mV @ 150 mA load, and

7 mV @ 1 mA load.

Ground Pin Current: Typically 850 µA @ 150 mA load, and

75 µA @ 1 mA load.

Enhanced Stability: The LP2985 is stable with output ca-

pacitor ESR as low as 5 mΩ, 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: SOT-23 and micro SMD packages

use 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).

Multiple voltage options, from 2.5V to 5.0V, are available as

standard products. Consult factory for custom voltages.

Block Diagram

VIP

is a registered trademark of National Semiconductor Corporation.

(Vertically Integrated PNP) process,

100140

Features

■

Applications

■

Ultra low dropout voltage

Guaranteed 150 mA output current

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

Requires minimum external components

Stable with low-ESR output capacitor

<1 µA quiescent current when shut down

Low ground pin current at all loads

Output voltage accuracy 1% (A Grade)

High peak current capability

Wide supply voltage range (16V max)

Low Z

Overtemperature/overcurrent protection

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

Custom voltages available

Cellular Phone

Palmtop/Laptop Computer

Personal Digital Assistant (PDA)

Camcorder, Personal Stereo, Camera

OUT

: 0.3Ω typical (10 Hz to 1 MHz)

10014001

December 2006

www.national.com

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