NSC LP2987AIM-2.8 Datasheet

February 2002

LP2987/LP2988
Micropower, 200 mA Ultra Low-Dropout Voltage
Regulator with Programmable Power-On Reset Delay;
Low Noise Version Available (LP2988)

LP2987/LP2988 Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable

Power-On Reset Delay

General Description

The LP2987/8 are fixed-output 200 mA precision LDO volt­age regulators with power-ON reset delay which can be
implemented using a single external capacitor.

The LP2988 is specifically designed for noise-critical appli­cations. Asingleexternal 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: 1mA
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 pro­vides 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.

™

(Vertically Integrated PNP) pro-

@

200 mAload, and1 mV@1mA

@

200 mA load, and 200 µA

Block Diagrams

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

2 µA quiescent current when shutdown

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

>

250 mA

Applications

n Cellular Phone
n Palmtop/Laptop Computer
n Camcorder, Personal Stereo, Camera

10001701

10001702

VIP™is a trademark of National Semiconductor Corporation.

© 2002 National Semiconductor Corporation DS100017 www.national.com

Connection Diagram (LP2987)

Surface Mount Packages: 8-Lead LLP Surface Mount Package

LP2987/LP2988

Top View

SO-8/Mini SO-8 Package

See NS Package Drawing Number M08A/MUA08A

For ordering information, refer to

document.

10001703

Table 1

in this

Top View

See NS Package Drawing Number LDC08A

Ordering Information (LP2987)

TABLE 1. Package Marking and Ordering Information

Output Voltage Grade Order Information Package Marking Supplied as:

5 A LP2987AIMMX-5.0 L44A 3500 Units on Tape and

Reel

5 A LP2987AIMM-5.0 L44A 1000 Units on Tape and

Reel

5 STD LP2987IMMX-5.0 L44B 3500 Units on Tape and

Reel

5 STD LP2987IMM-5.0 L44B 1000 Units on Tape and

Reel

3.8 A LP2987AIMMX-3.8 L96A 3500 Units on Tape and
Reel

3.8 A LP2987AIMM-3.8 L96A 1000 Units on Tape and
Reel

3.8 STD LP2987IMMX-3.8 L96B 3500 Units on Tape and
Reel

3.8 STD LP2987IMM-3.8 L96B 1000 Units on Tape and
Reel

3.3 A LP2987AIMMX-3.3 L43A 3500 Units on Tape and
Reel

3.3 A LP2987AIMM-3.3 L43A 1000 Units on Tape and
Reel

3.3 STD LP2987IMMX-3.3 L43B 3500 Units on Tape and
Reel

3.3 STD LP2987IMM-3.3 L43B 1000 Units on Tape and
Reel

3.2 A LP2987AIMMX-3.2 L66A 3500 Units on Tape and
Reel

3.2 A LP2987AIMM-3.2 L66A 1000 Units on Tape and
Reel

3.2 STD LP2987IMMX-3.2 L66B 3500 Units on Tape and
Reel

3.2 STD LP2987IMM-3.2 L66B 1000 Units on Tape and
Reel

3.0 A LP2987AIMMX-3.0 L42A 3500 Units on Tape and
Reel

10001757

www.national.com 2

Ordering Information (LP2987) (Continued)

TABLE 1. Package Marking and Ordering Information (Continued)

Output Voltage Grade Order Information Package Marking Supplied as:

3.0 A LP2987AIMM-3.0 L42A 1000 Units on Tape and
Reel

3.0 STD LP2987IMMX-3.0 L42B 3500 Units on Tape and
Reel

3.0 STD LP2987IMM-3.0 L42B 1000 Units on Tape and
Reel

2.8 A LP2987AIMMX-2.8 L89A 3500 Units on Tape and
Reel

2.8 A LP2987AIMM-2.8 L89A 1000 Units on Tape and
Reel

2.8 STD LP2987IMMX-2.8 L89B 3500 Units on Tape and
Reel

2.8 STD LP2987IMM-2.8 L89B 1000 Units on Tape and
Reel

5 A LP2987AIMX-5.0 2987AIM5.0 2500 Units on Tape and

Reel

5 A LP2987AIM-5.0 2987AIM5.0 Shipped in Anti-Static

Rails

5 STD LP2987IMX-5.0 2987IM5.0 2500 Units on Tape and

Reel

5 STD LP2987IM-5.0 2987IM5.0 Shipped in Anti-Static

Rails

3.8 A LP2987AIMX-3.8 2987AIM3.8 2500 Units on Tape and
Reel

3.8 A LP2987AIM-3.8 2987AIM3.8 Shipped in Anti-Static

Rails

3.8 STD LP2987IMX-3.8 2987IM3.8 2500 Units on Tape and
Reel

3.8 STD LP2987IM-3.8 2987IM3.8 Shipped in Anti-Static

Rails

3.3 A LP2987AIMX-3.3 2987AIM3.3 2500 Units on Tape and
Reel

3.3 A LP2987AIM-3.3 2987AIM3.3 Shipped in Anti-Static

Rails

3.3 STD LP2987IMX-3.3 2987IM3.3 2500 Units on Tape and
Reel

3.3 STD LP2987IM-3.3 2987IM3.3 Shipped in Anti-Static

Rails

3.2 A LP2987AIMX-3.2 2987AIM3.2 2500 Units on Tape and
Reel

3.2 A LP2987AIM-3.2 2987AIM3.2 Shipped in Anti-Static

Rails

3.2 STD LP2987IMX-3.2 2987IM3.2 2500 Units on Tape and
Reel

3.2 STD LP2987AIM-3.2 2987IM3.2 Shipped in Anti-Static

Rails

3.0 A LP2987IMX-3.0 2987AIM3.0 2500 Units on Tape and
Reel

3.0 A LP2987AIM-3.0 2987AIM3.0 Shipped in Anti-Static

Rails

LP2987/LP2988

www.national.com3

Ordering Information (LP2987) (Continued)

TABLE 1. Package Marking and Ordering Information (Continued)

Output Voltage Grade Order Information Package Marking Supplied as:

3.0 STD LP2987IMX-3.0 2987IM3.0 2500 Units on Tape and

LP2987/LP2988

3.0 STD LP2987IM-3.0 2987IM3.0 Shipped in Anti-Static

2.8 A LP2987AIMX-2.8 2987AIM2.8 2500 Units on Tape and

2.8 A LP2987AIM-2.8 2987AIM2.8 Shipped in Anti-Static

2.8 STD LP2987IMX-2.8 2987IM2.8 2500 Units on Tape and

2.8 STD LP2987AIM-2.8 2987AIM2.8 Shipped in Anti-Static

8-Lead LLP

5 A LP2987AILD-5 L009A 1000 Units on Tape and

5 A LP2987AILDX-5 L009A 4500 Units on Tape and

5 STD LP2987ILD-5 L009AB 1000 Units on Tape and

5 STD LP2987ILDX-5 L009AB 4500 Units on Tape and

3.3 A LP2987AILD-3.3 L008A 1000 Units on Tape and

3.3 A LP2987AILDX-3.3 L008A 4500 Units on Tape and

3.3 STD LP2987ILD-3.3 L008AB 1000 Units on Tape and

3.3 STD LP2987ILDX-3.3 L008AB 4500 Units on Tape and

3.0 A LP2987AILD-3.0 L007A 1000 Units on Tape and

3.0 A LP2987AILDX-3.0 L007A 4500 Units on Tape and

3.0 STD LP2987ILD-3.0 L007AB 1000 Units on Tape and

3.0 STD LP2987ILDX-3.0 L007AB 4500 Units on Tape and

Reel

Rails

Reel

Rails

Reel

Rails

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

www.national.com 4

Connection Diagram (LP2988)

Surface Mount Packages: 8-Lead LLP Surface Mount Package

LP2987/LP2988

Top View

SO-8/Mini SO-8 Package

See NS Package Drawing Number M08A/MUA08A

For ordering information, refer to

document.

10001703

Table 1

in this

Top View

10001758

See NS Package Drawing Number LDC08A

Ordering Information (LP2988)

TABLE 2. Package Marking and Ordering Information

Output Voltage Grade Order Information Package Marking Supplied as:

5.7 A LP2988AIMMX-5.7 LF2A 3500 Units on Tape and
Reel

5.7 A LP2988AIMM-5.7 LF2A 1000 Units on Tape and
Reel

5.7 STD LP2988IMMX-5.7 LF2B 3500 Units on Tape and
Reel

5.7 STD LP2988IMM-5.7 LF2B 1000 Units on Tape and
Reel

5.0 A LP2988AIMMX-5.0 L51A 3500 Units on Tape and
Reel

5.0 A LP2988AIMM-5.0 L51A 1000 Units on Tape and
Reel

5.0 STD LP2988IMMX-5.0 L51B 3500 Units on Tape and
Reel

5.0 STD LP2988IMM-5.0 L51B 1000 Units on Tape and
Reel

3.8 A LP2988AIMMX-3.8 L0AA 3500 Units on Tape and
Reel

3.8 A LP2988AIMM-3.8 L0AA 1000 Units on Tape and
Reel

3.8 STD LP2988IMMX-3.8 L0AB 3500 Units on Tape and
Reel

3.8 STD LP2988IMM-3.8 L0AB 1000 Units on Tape and
Reel

3.3 A LP2988AIMMX-3.3 L50A 3500 Units on Tape and
Reel

3.3 A LP2988AIMM-3.3 L50A 1000 Units on Tape and
Reel

3.3 STD LP2988IMMX-3.3 L50B 3500 Units on Tape and
Reel

3.3 STD LP2988IMM-3.3 L50B 1000 Units on Tape and
Reel

3.2 A LP2988AIMMX-3.2 L67A 3500 Units on Tape and
Reel

3.2 A LP2988AIMM-3.2 L67A 1000 Units on Tape and
Reel

www.national.com5

Ordering Information (LP2988) (Continued)

TABLE 2. Package Marking and Ordering Information (Continued)

Output Voltage Grade Order Information Package Marking Supplied as:

3.2 STD LP2988IMMX-3.2 L67B 3500 Units on Tape and

LP2987/LP2988

3.2 STD LP2988IMM-3.2 L67B 1000 Units on Tape and

3.0 A LP2988AIMMX-3.0 L49A 3500 Units on Tape and

3.0 A LP2988AIMM-3.0 L49A 1000 Units on Tape and

3.0 STD LP2988IMMX-3.0 L49B 3500 Units on Tape and

3.0 STD LP2988IMM-3.0 L49B 1000 Units on Tape and

2.8 A LP2988AIMMX-2.8 L0IA 3500 Units on Tape and

2.8 A LP2988AIMM-2.8 L0IA 1000 Units on Tape and

2.8 STD LP2988IMMX-2.8 L0IB 3500 Units on Tape and

2.8 STD LP2988IMM-2.8 L0IB 1000 Units on Tape and

2.7 A LP2988AIMMX-2.7 LCVA 3500 Units on Tape and

2.7 A LP2988AIMM-2.7 LCVA 1000 Units on Tape and

2.7 STD LP2988IMMX-2.7 LCVB 3500 Units on Tape and

2.7 STD LP2988IMM-2.7 LCVB 1000 Units on Tape and

2.5 A LP2988AIMMX-2.5 L99A 3500 Units on Tape and

2.5 A LP2988AIMM-2.5 L99A 1000 Units on Tape and

2.5 STD LP2988IMMX-2.5 L99B 3500 Units on Tape and

2.5 STD LP2988IMM-2.5 L99B 1000 Units on Tape and

5.0 A LP2988AIMX-5.0 2988AIM5.0 2500 Units on Tape and

5.0 A LP2988AIM-5.0 2988AIM5.0 Shipped in Anti-Static

5.0 STD LP2988IMX-5.0 2988IM5.0 2500 Units on Tape and

5.0 STD LP2988IM-5.0 2988IM5.0 Shipped in Anti-Static

3.8 A LP2988AIMX-3.8 2988AIM3.8 2500 Units on Tape and

3.8 A LP2988AIM-3.8 2988AIM3.8 Shipped in Anti-Static

3.8 STD LP2988IMX-3.8 2988IM3.8 2500 Units on Tape and

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Rails

Reel

Rails

Reel

Rails

Reel

www.national.com 6

Ordering Information (LP2988) (Continued)

TABLE 2. Package Marking and Ordering Information (Continued)

Output Voltage Grade Order Information Package Marking Supplied as:

3.8 STD LP2988IM-3.8 2988IM3.8 Shipped in Anti-Static

Rails

3.3 A LP2988AIMX-3.3 2988AIM3.3 2500 Units on Tape and
Reel

3.3 A LP2988AIM-3.3 2988AIM3.3 Shipped in Anti-Static

Rails

3.3 STD LP2988IMX-3.3 2988IM3.3 2.5k Units on Tape and
Reel

3.3 STD LP2988IM-3.3 2988IM3.3 Shipped in Anti-Static

Rails

3.2 A LP2988AIMX-3.2 2988AIM3.2 2500 Units on Tape and
Reel

3.2 A LP2988AIM-3.2 2988AIM3.2 Shipped in Anti-Static

Rails

3.2 STD LP2988IMX-3.2 2988IM3.2 2500 Units on Tape and
Reel

3.2 STD LP2988IM-3.2 2988IM3.2 Shipped in Anti-Static

Rails

3.0 A LP2988AIMX-3.0 2988AIM3.0 2500 Units on Tape and
Reel

3.0 A LP2988AIM-3.0 2988AIM3.0 Shipped in Anti-Static

Rails

3.0 STD LP2988IMX-3.0 2988IM3.0 2500 Units on Tape and
Reel

3.0 STD LP2988IM-3.0 2988IM3.0 Shipped in Anti-Static

Rails

2.8 A LP2988AIMX-2.8 2988AIM2.8 2500 Units on Tape and
Reel

2.8 A LP2988AIM-2.8 2988AIM2.8 Shipped in Anti-Static

Rails

2.8 STD LP2988IMX-2.8 2988IM2.8 2500 Units on Tape and
Reel

2.8 STD LP2988IM-2.8 2988IM2.8 Shipped in Anti-Static

Rails

2.7 A LP2988AIMX-2.7 2988AIM2.7 2500 Units on Tape and
Reel

2.7 A LP2988AIM-2.7 2988AIM2.7 Shipped in Anti-Static

Rails

2.7 STD LP2988IMX-2.7 2988IM2.7 2500 Units on Tape and
Reel

2.7 STD LP2988IM-2.7 2988IM2.7 Shipped in Anti-Static

Rails

2.5 A LP2988AIMX-2.5 2988AIM2.5 2500 Units on Tape and
Reel

2.5 A LP2988AIM-2.5 2988AIM2.5 Shipped in Anti-Static

Rails

2.5 STD LP2988IMX-2.5 2988IM2.5 2500 Units on Tape and
Reel

2.5 STD LP2988IM-2.5 2988IM2.5 Shipped in Anti-Static

Rails

LP2987/LP2988

www.national.com7

Ordering Information (LP2988) (Continued)

TABLE 2. Package Marking and Ordering Information (Continued)

Output Voltage Grade Order Information Package Marking Supplied as:

8-Lead LLP

LP2987/LP2988

5 A LP2988AILD-5 L01DA 1000 Units on Tape and

5 A LP2988AILDX-5 L01DA 4500 Units on Tape and

5 STD LP2988ILD-5 L01DAB 1000 Units on Tape and

5 STD LP2988ILDX-5 L01DAB 4500 Units on Tape and

3.3 A LP2988AILD-3.3 L01CA 1000 Units on Tape and

3.3 A LP2988AILDX-3.3 L01CA 4500 Units on Tape and

3.3 STD LP2988ILD-3.3 L01CAB 1000 Units on Tape and

3.3 STD LP2988ILDX-3.3 L01CAB 4500 Units on Tape and

3.0 A LP2988AILD-3.0 L01BA 1000 Units on Tape and

3.0 A LP2988AILDX-3.0 L01BA 4500 Units on Tape and

3.0 STD LP2988ILD-3.0 L01BAB 1000 Units on Tape and

3.0 STD LP2988ILDX-3.0 L01BAB 4500 Units on Tape and

2.5 A LP2988AILD-2.5 L01AA 1000 Units on Tape and

2.5 A LP2988AILDX-2.5 L01AA 4500 Units on Tape and

2.5 STD LP2988ILD-2.5 L01AAB 1000 Units on Tape and

2.5 STD LP2988ILDX-2.5 L01AAB 4500 Units on Tape and

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

Reel

www.national.com 8