ADP3339 datasheet(1/8 Pages) AD

Il numero della parte	ADP3339

Spiegazioni elettronici	High-Accuracy Ultralow IQ, 1.5 A, anyCAP Low Dropout Regulator

PDF	8 Pages

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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1 / 8 page

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

a

ADP3339

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

FUNCTIONAL BLOCK DIAGRAM

High-Accuracy Ultralow IQ, 1.5 A, anyCAP®

Low Dropout Regulator

FEATURES

High Accuracy Over Line and Load:

0.9% @ 25 C,

1.5% Over Temperature

Ultralow Dropout Voltage: 230 mV (Typ) @ 1.5 A

Requires Only CO = 1.0

F for Stability

anyCAP = Stable with Any Type of Capacitor

(Including MLCC)

Current and Thermal Limiting

Low Noise

2.8 V to 6 V Supply Range

–40 C to +85 C Ambient Temperature Range

SOT-223 Package

APPLICATIONS

Notebook, Palmtop Computers

SCSI Terminators

Battery-Powered Systems

PCMCIA Regulator

Bar Code Scanners

Camcorders, Cameras

GENERAL DESCRIPTION

The ADP3339 is a member of the ADP33xx family of precision

low dropout anyCAP voltage regulators. The ADP3339 oper-

ates with an input voltage range of 2.8 V to 6 V and delivers a

load current up to 1.5 A. The ADP3339 stands out from the

conventional LDOs with a novel architecture and an enhanced

process that enables it to offer performance advantages and

higher output current than its competition. Its patented design

requires only a 1.0

µF output capacitor for stability. This device

is insensitive to output capacitor Equivalent Series Resistance

(ESR), and is stable with any good quality capacitor, including

ceramic (MLCC) types for space-restricted applications. The

ADP3339 achieves exceptional accuracy of

±0.9% at room

temperature and

±1.5% over temperature, line and load varia-

tions. The dropout voltage of the ADP3339 is only 230 mV

(typical) at 1.5 A. This device also includes a safety current limit

and thermal overload protection. The ADP3339 has ultralow

quiescent current 130

µA (typical) in light load situations.

anyCAP is a registered trademark of Analog Devices Inc.

VIN

OUT

ADP3339

1 F

VOUT

GND

IN

Figure 1. Typical Application Circuit

THERMAL

PROTECTION

CC

IN

ADP3339

OUT

R1

R2

GND

Q1

BANDGAP

REF

DRIVER

gm

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