LP8345CLDX-ADJ datasheet(1/13 Pages) NSC

No. de pieza	LP8345CLDX-ADJ

Descripción Electrónicos	Low Dropout, Low IQ, 500mA CMOS Linear Regulator

PDF	13 Pages

Scroll/Zoom	100%

Fabricante Electrónico	NSC [National Semiconductor (TI)]

Página de inicio	http://www.national.com

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LP8345

Low Dropout, Low IQ, 500mA CMOS Linear Regulator

General Description

The LP8345 low-dropout CMOS linear regulator are avail-

able in 5V, 3.3V, 2.5V, 1.8V or adjustable output versions.

Packaged in our 6ld LLP package and 3ld DPAK they can

deliver up to 500mA output current.

Typical dropout voltage @ 500mA is 210mV for the 5.0V

version, 270mV for the 3.3V version and 335mV for the 2.5V

version.

The devices include a zener trimmed bandgap voltage ref-

erence, foldback current limiting and thermal overload limit-

ing.

The LP8345 features a PMOS output transistor which unlike

PNP type low dropout regulators requires no base drive

current. This allows the device ground current to remain less

than 50µA over operating temperature, supply voltage and

irrespective of the load current.

Features

n ±

1.5% Typical V

OUT tolerance

n

210mV Typical Dropout @ 500mA (V

O = 5V)

n

Wide Operating Range

2.7V to 10V

n

Internal 500mA PMOS Output Transistor

n

19µA Typical Quiescent Current

n

Thermal Overload Limiting

n

Foldback Current Limiting

n

Zener Trimmed Bandgap Reference

n

Space saving LLP package

n

Temperature Range

— LP8345C

0˚C to 125˚C

— LP8345I

−40˚C to 125˚C

Applications

n

Hard Disk Drives

n

Notebook Computers

n

Battery Powered Electronics

n

Portable Instrumentation

Typical Applications

Fixed V

OUT

20064801

Adjustable V

OUT

20064802

October 2003

DS200648

www.national.com

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LP8345CLDX-ADJ Datasheet(PDF) 1 Page - National Semiconductor (TI)

LP8345CLDX-ADJ Datasheet(HTML) 1 Page - National Semiconductor (TI)

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