REV. 0

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

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

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a

ADP3307

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1997

High Accuracy anyCAP™

100 mA Low Dropout Linear Regulator

FUNCTIONAL BLOCK DIAGRAM

THERMAL

PROTECTION

DRIVER

CC

IN

ADP3307

OUT

R1

R2

NR

GND

Q1

ERR

SD

BANDGAP

REF

Q2

+

–

ADP3307-3.3

NR

OUT

ERR

ON

OFF

SD

GND

R1

330k

IN

C2

0.47 F

C1

0.47 F

Figure 1. Typical Application Circuit

FEATURES

0.8% Accuracy Over Line and Load Regulations @ +25 C

Ultralow Dropout Voltage: 120 mV Typical @ 100 mA

F for Stability

anyCAP = Stable with All Types of Output Capacitors

(Including MLCC)

Current and Thermal Limiting

Low Noise

Dropout Detector

Low Shutdown Current: 1

A

3.0 V to 12 V Supply Range

–20 C to +85 C Ambient Temperature Range

Several Fixed Voltage Options

Ultrasmall SOT-23-6 (RT-6) Package

Excellent Line and Load Regulations

APPLICATIONS

Cellular Telephones

Notebook, Palmtop Computers

Battery Powered Systems

PCMCIA Regulator

Bar Code Scanners

Camcorders, Cameras

GENERAL DESCRIPTION

The ADP3307 is a member of the ADP330x family of precision

low dropout anyCAP voltage regulators. The ADP3307 stands

out from the conventional LDOs with a novel architecture and

an enhanced process. Its patented design requires only a 0.47

µF

output capacitor for stability. This device is stable with any type

of capacitor regardless of its ESR (Equivalent Series Resistance)

value, including ceramic types (MLCC) for space restricted

applications. The ADP3307 achieves exceptional accuracy of

±0.8% at room temperature and ±1.4% overall accuracy over

temperature, line and load regulations. The dropout voltage of

the ADP3307 is only 120 mV (typical) at 100 mA.

The ADP3307 operates with a wide input voltage range from

3.0 V to 12 V and delivers a load current in excess of 100 mA.

It features an error flag that signals when the device is about to

lose regulation or when the short circuit or thermal overload

protection is activated. Other features include shutdown and

optional noise reduction capabilities. The ADP330x anyCAP

LDO family offers a wide range of output voltages and output

current levels from 50 mA to 300 mA:

ADP3300 (50 mA, SOT-6)

ADP3307 (100 mA, SOT)

ADP3301 (100 mA, SO-8)

ADP3302 (100 mA, Dual Output)

ADP3303 (200 mA)

ADP3306 (300 mA)

anyCAP is a trademark of Analog Devices, Inc.