ADP3301AR-32 Analog Devices, ADP3301AR-32 Datasheet

ADP3301AR-32

Manufacturer Part Number

ADP3301AR-32

Description

High Accuracy anyCAP 100 mA Low Dropout Linear Regulator

Manufacturer

Analog Devices

Datasheet

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GENERAL DESCRIPTION

The ADP3301 is a member of the ADP330x family of precision

low dropout anyCAP™* voltage regulators. The ADP3301

stands out from the conventional LDOs with a novel architec-

ture, an enhanced process and a new package. Its patented

design includes a noninverting wideband driver and a stage that

permits the use of an internal “pole splitting” capacitor to

stabilize the feedback loop with a single output capacitor as

small as 0.47 F. This device is stable with any type of capacitor

regardless of its ESR (Equivalent Serial Resistance) value,

including ceramic types (MLCC) for space restricted applica-

tions. The ADP3301 achieves exceptional accuracy of 0.8% at

room temperature and 1.4% overall accuracy over tempera-

ture, line and load regulations. The dropout voltage of the

ADP3301 is only 100 mV (typical) at 100 mA.

In addition to the new architecture and process, ADI’s new

proprietary thermally enhanced package (Thermal Coastline)

can handle 1 W of power dissipation without external heat sink

or large copper surface on the PC board. This keeps PC board

real estate to a minimum and makes the ADP3301 very

attractive for use in portable equipment.

*anyCAP is a trademark of Analog Devices Inc.

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

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

otherwise under any patent or patent rights of Analog Devices.

FEATURES

High Accuracy (Over Line and Load Regulations

Ultralow Dropout Voltage: 100 mV Typical @ 100 mA

Requires Only C

anyCAP™* = Stable with All Types of Capacitors

Current and Thermal Limiting

Low Noise

Dropout Detector

Low Shutdown Current: 1 A

Several Fixed Voltage Options

3.0 V to 12 V Supply Range

–20 C to +85 C Ambient Temperature Range

Thermally Enhanced SO-8 Package

Excellent Line and Load Regulations

APPLICATIONS

Cellular Telephones

Notebook, Palmtop Computers

Battery Powered Systems

Portable Instruments

Post Regulator for Switching Supplies

Bar Code Scanners

at +25 C):

0.8%

= 0.47 F for Stability

100 mA Low Dropout Linear Regulator

The ADP3301 operates with a wide input voltage range from

3 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:

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

Tel: 617/329-4700

Fax: 617/326-8703

ADP3300 (50 mA, SOT-23)

ADP3302 (100 mA, Dual Output)

ADP3304 (100 mA, Dual Output with Separate Grounds)

ADP3303 (200 mA)

ADP3306 (300 mA)

ERR

0.47µF

High Accuracy anyCAP™*

Figure 1. Typical Application Circuit

FUNCTIONAL BLOCK DIAGRAM

PROTECTION

THERMAL

ADP3301-5.0

OFF

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

OUT

ERR

GND

DRIVER

GND

330k

BANDGAP

ADP3301

OUT

ADP3301

REF

0.47µF

OUT

= +5V

Related parts for ADP3301AR-32

ADP3301AR-32 Summary of contents

Page 1

... Analog Devices Inc. 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. High Accuracy anyCAP™ ...

Page 2

ADP3301–xx–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol OUTPUT VOLTAGE V ACCURACY LINE REGULATION V V LOAD REGULATION V I GROUND CURRENT I GND GROUND CURRENT I GND IN DROPOUT DROPOUT VOLTAGE V SHUTDOWN THRESHOLD V SHUTDOWN PIN I SDIN INPUT CURRENT GROUND ...

Page 3

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE Model Voltage Output ADP3301AR-2.7 2.7 V ADP3301AR-3 3.0 V ADP3301AR-3.2 3.2 V ADP3301AR-3.3 3.3 V ADP3301AR-5 5.0 V Contact the factory for the availability of other output voltage options. *SO = Small Outline. Other Members of anyCAP™* Family Output Package 2 Model Current Option ADP3300 50 mA ...

Page 4

ADP3301 –Typical Performance Characteristics 5.0003 I = 0mA L 5.0000 I = 10mA L 4.9997 I = 50mA L 4.9994 4.9991 I = 100mA L 4.9988 4.9985 OUT 4.9982 4.9979 5 ...

Page 5

OUT 5.01 5.00 4. 0.47µF LOAD 4. 7.5 7 100 120 140 160 180 200 TIME – µs Figure 11. Line Transient Response C = 10µF L ...

Page 6

ADP3301 APPLICATION INFORMATION anyCAP™* The ADP3301 is very easy to use. The only external component required for stability is a small 0.47 F bypass capacitor on the output. Unlike the conventional LDO designs, the ADP3301 is stable with virtually any ...

Page 7

It is not recommended to use solder mask or silkscreen on the PCB traces adjacent to the ADP3301’s pins since it will increase the junction to ambient thermal resistance of the package. Shutdown Mode Applying a TTL high signal to ...

Page 8

ADP3301 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Pin Small Outline Package (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.1574 (4.00) 0.2440 (6.20 0.1497 (3.80) 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0196 (0.50) 0.0098 (0.25) 0.0532 (1.35) ...

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