ADP3342 datasheet(1/8 Pages) AD

Il numero della parte	ADP3342

Spiegazioni elettronici	Ultralow, IQ, anyCAP Low Dropout Regulator

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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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

ADP3342

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

Ultralow, IQ, anyCAP

®

Low Dropout Regulator

FEATURES

Accuracy Over Line and Load:

4.0% @ 25 C,

5% Over Temperature

Ultralow Dropout Voltage: 300 mV (Typ) @ 300 mA

Requires Only CO = 1.0

F for Stability

anyCAP = Stable with any Type of Capacitor

(including MLCC)

Current and Thermal Limiting

Low Shutdown Current: < 2

A

1.7 V

VIN

6 V

2.8 V

VCC

6 V

VOUT = 1.2 V

5%

–40 C to +100 C Ambient Temperature Range

Ultrasmall Thermally Enhanced 8-Lead MSOP Package

APPLICATIONS

Notebook PCs

Desktop PCs

GENERAL DESCRIPTION

The ADP3342 is a unique member of the ADP330x family of

precision low dropout anyCAP voltage regulators. The ADP3342

operates with an input voltage range of 1.7 V to 6 V and delivers

a continuous load current up to 300 mA. In order to support the

ability to regulate from such a low input voltage, the power rail

to the IC, VCC, has been split off from the main power rail, VIN,

from which the output is powered.

The ADP3342 stands out from the conventional LDOs with the

lowest thermal resistance of any MSOP-8 package and an enhanced

process that enables it to offer performance advantages beyond

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 dropout voltage of the ADP3342 is

only 190 mV (typical) at 300 mA. This device also includes a

safety current limit, thermal overload protection and a shutdown

control pin.

FUNCTIONAL BLOCK DIAGRAM

THERMAL

PROTECTION

CC

IN

ADP3342

OUT

GND

Q1

gm

BANDGAP +

REF –

DRIVER

VCC

PWRGD

SD

+

VCC

IN

SD

OUT

PWRGD

GND

ADP3342

+

ON

OFF

1 F

VIN

1.8V

1 F

VOUT

1.2V

3.3V

Figure 1. Typical Application Circuit

anyCAP is a registered trademark of Analog Devices, Inc.

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