Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LP2989LV

SNVS086K – MAY 2000 – REVISED JULY 2015

LP2989LV Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With

Ceramic Output Capacitors

1 Features

3 Description

The LP2989LV is a fixed-output 500-mA precision

1

•

2.1-V to 16-V Input Voltage Range

LDO regulator designed for use with ceramic output

•

Ultra-Low Dropout Voltage

capacitors.

•

500-mA Continuous Output Current

Output noise can be reduced to 18

μV (typical) by

•

Very Low Output Noise With External Capacitor

connecting an external 10-nF capacitor to the bypass

•

< 0.8-µA Quiescent Current When Shut Down

pin.

•

Low Ground Pin Current at All Loads

Using an optimized Vertically Integrated PNP (VIP)

•

0.75% Output Voltage Accuracy (A Grade)

process,

the

LP2989LV

delivers

superior

performance:

•

High Peak Current Capability (800-mA typical)

•

Overtemperature and Overcurrent Protection

Ground Pin Current: Typically 3 mA at 500-mA load,

and 110 µA at 100-µA load.

•

−40°C to +125°C Junction Temperature Range

Sleep Mode: The LP2989LV draws less than 0.8-µA

2 Applications

quiescent current when SHUTDOWN pin is pulled

low.

•

Notebooks and Desktop PCs

ERROR Flag: The built-in ERROR flag goes low

•

PDAs and Palmtop Computers

when the output drops approximately 5% below

•

Wireless Communication Pins

nominal.

•

SMPS Post-Regulators

Precision Output: Output voltage accuracy is 0.75%

(A grade) and 1.25% (standard grade) at room

temperature.

For output voltages greater than or equal to 2 V, see

the LP2989 (SNVS083) data sheet.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

WSON (8)

4.00 mm x 4.00 mm

LP2989LV

SOIC (8)

4.90 mm x 3.91 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application

*Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger

output capacitor provides improved dynamic response. See the Output Capacitor section.

**Shutdown must be actively terminated (see the Shutdown Input Operation section). Tie to IN (pin 4) if not use.

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.