LP2987IMM-3.3 National Semiconductor, LP2987IMM-3.3 Datasheet

LP2987IMM-3.3

Manufacturer Part Number

LP2987IMM-3.3

Description

Linear Voltage Regulator IC

Manufacturer

National Semiconductor

Datasheets

1.LP2988AIMM-3.3.pdf (23 pages)

2.LP2988AIMM-3.3.pdf (24 pages)

3.LP2988AIMM-3.3.pdf (19 pages)

Specifications of LP2987IMM-3.3

Primary Input Voltage

16V

Dropout Voltage Vdo

180mV

No. Of Pins

Output Current

200mA

Operating Temperature Range

-40Â°C To +125Â°C

Termination Type

SMD

Mounting Type

Surface Mount

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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Price

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Download datasheet (2Mb)

LP2987/LP2988

Micropower, 200 mA Ultra Low-Dropout Voltage

Regulator with Programmable Power-On Reset Delay;

Low Noise Version Available (LP2988)

General Description

The LP2987/8 are fixed-output 200 mA precision LDO volt-

age regulators with power-ON reset delay which can be

implemented using a single external capacitor.

The LP2988 is specifically designed for noise-critical appli-

cations. A single external capacitor connected to the Bypass

pin reduces regulator output noise.

Using an optimized VIP

cess, these regulators deliver superior performance:

Dropout Voltage: 180 mV

load (typical).

Ground Pin Current: 1 mA

10 mA load (typical).

Sleep Mode: The LP2987/8 draws less than 2 µA quiescent

current when shutdown pin is held low.

Error Flag/Reset: The error flag goes low when the output

drops approximately 5% below nominal. This pin also pro-

vides a power-ON reset signal if a capacitor is connected to

the DELAY pin.

Precision Output: Standard product versions of the LP2987

and LP2988 are available with output voltages of 5.0V, 3.8V,

3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5%

(“A” grade) and 1% (standard grade) at room temperature.

Block Diagrams

VIP

™

is a trademark of National Semiconductor Corporation.

™

(Vertically Integrated PNP) pro-

200 mA load, and 1 mV

200 mA load, and 200 µA

DS100017

10001701

1 mA

Features

n Ultra low dropout voltage

n Power-ON reset delay requires only one component

n Bypass pin for reduced output noise (LP2988)

n Guaranteed continuous output current 200 mA

n Guaranteed peak output current

n SO-8 and mini SO-8 surface mount packages

n Low ground pin current at all loads

n 0.5% output voltage accuracy (“A” grade)

n Wide supply voltage range (16V max)

n Overtemperature/overcurrent protection

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

Applications

n Cellular Phone

n Palmtop/Laptop Computer

n Camcorder, Personal Stereo, Camera

2 µA quiescent current when shutdown

250 mA

www.national.com

March 2005

10001702

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