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ON/OFF

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BYPASS

OUT

OFF

ON

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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.

LP2982

SNVS128K – MARCH 2000 – REVISED JUNE 2016

LP2982 50-mA Micropower Ultra-Low-Dropout LDO in SOT-23 Package

1

1 Features

1

•

2.1-V to 16-V Input Voltage

•

Ultra-Low-Dropout Voltage

•

Ensured 50-mA Output Current

•

Typical Dropout Voltage 180 mV at 80 mA

•

Requires Minimum External Components

•

< 1 μA Quiescent Current When Shut Down

•

Low Ground Pin Current at All Loads

•

Output Voltage Accuracy 1% (A Grade)

•

High Peak Current Capability (150 mA Typical)

•

Wide Supply Voltage Range (16 V Maximum)

•

•

Overtemperature and Overcurrent Protection

•

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

2 Applications

•

Cellular Phones

•

Palmtop and Laptop Computers

•

Personal Digital Assistants (PDA)

•

Camcorders, Personal Stereos, Cameras

3 Description

The LP2982 is a 50-mA, fixed-output voltage LDO

designed to provide ultra-low dropout and lower noise

in battery-powered applications.

Using an optimized vertically integrated PNP (VIP)

process, the LP2982 delivers unequaled performance

in

all

specifications

critical

to

battery-powered

designs:

Dropout Voltage: Typically 120 mV at 50 mA load,

and 7 mV at 1 mA load.

Ground Pin Current: Typically 375 μA at 50 mA load,

and 80 μA at 1 mA load.

Sleep Mode: Less than 1-μA quiescent current when

ON/OFF pin is pulled low.

Precision Output: 1% tolerance output voltages

available (A grade).

Low Noise: By adding an external bypass capacitor,

output noise can be reduced to 30 μV (typical).

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP2982

SOT-23 (5)

2.90 mm × 1.60 mm

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

the end of the data sheet.

Simplified Schematic