Analog Devices ADP3301 Datasheet

High Accuracy anyCAP™*

Q2

THERMAL

PROTECTION

Gm

Q1

CC

BANDGAP

REF

DRIVER

R1

R2

ADP3301

OUT

IN

ERR

SD

GND

a

100 mA Low Dropout Linear Regulator

FEATURES
High Accuracy (Over Line and Load Regulations

at +258C): 60.8%
Ultralow Dropout Voltage: 100 mV Typical @ 100 mA
Requires Only CO = 0.47 mF for Stability
anyCAP™* = Stable with All Types of Capacitors
Current and Thermal Limiting
Low Noise
Dropout Detector
Low Shutdown Current: 1 mA
Several Fixed Voltage Options

3.0 V to 12 V Supply Range
–208C to +858C 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

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 architec­ture, 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 µF. This device is stable with any type of capacitor
regardless of its ESR (Equivalent Serial Resistance) value,
including ceramic types (MLCC) for space restricted applica­tions. The ADP3301 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
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.

ADP3301

FUNCTIONAL BLOCK DIAGRAM

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:

ADP3300 (50 mA, SOT-23)
ADP3302 (100 mA, Dual Output)
ADP3304 (100 mA, Dual Output with Separate Grounds)
ADP3303 (200 mA)
ADP3306 (300 mA)

3

NR

ADP3301-5.0

V

IN

0.47µF

7

IN

C1

8

5

ON

OFF

Figure 1. Typical Application Circuit

OUT

ERR

4

GND

1
2

R1
330kΩ

6

E

OUT

C2

0.47µF

V

= +5V

OUT

*anyCAP is a trademark of Analog Devices Inc.

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

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1997

ADP3301–xx–SPECIFICA TIONS

ELECTRICAL CHARACTERISTICS

(@ TA = –208C to +858C, VIN = 7 V, CIN = 0.47 mF, C

= 0.47 mF, unless otherwise noted)

OUT

Parameter Symbol Conditions Min Typ Max Units

OUTPUT VOLTAGE V

OUT

ACCURACY I

VIN = Nom V

= 0.1 mA to 100 mA

L

T

= +25°C –0.8 +0.8 %

A

V

= Nom V

IN

+0.3 V to 12 V

OUT

+0.3 V to 12 V

OUT

IL = 0.1 mA to 100 mA –1.4 +1.4 %

LINE REGULATION ∆V

∆V

LOAD REGULATION ∆V

∆I

GROUND CURRENT I

GND

O
IN

O

L

V

= Nom V

IN

+0.3 V to 12 V

OUT

TA = +25°C 0.024 mV/V
IL = 0.1 mA to 100 mA

TA = +25°C 0.014 mV/mA
IL = 100 mA 0.85 2 mA

IL = 0.1 mA 0.18 0.3 mA

GROUND CURRENT I

GND

VIN = 2.5 V

IN DROPOUT IL = 0.1 mA 0.6 1.2 mA

DROPOUT VOLTAGE V

DROP

V

= 98% of VO Nominal

OUT

I

= 100 mA 0.1 0.2 V

L

I

= 10 mA 0.02 0.07 V

L

IL = 1 mA 0.003 0.03 V

SHUTDOWN THRESHOLD V

THSD

ON 2.0 0.9 V
OFF 0.9 0.3 V

1

SHUTDOWN PIN I

SDIN

0 < V

< 5 V 1 µA

SD

INPUT CURRENT 5 ≤ VSD ≤ 12 V @ VIN = 12 V 22 µA
GROUND CURRENT IN I

Q

SHUTDOWN MODE T

VSD = 0, VIN = 12 V

= +25°C1µA

A

V

= 0, VIN = 12 V

SD

TA = +85°C5µA

OUTPUT CURRENT IN I

OSD

TA = +25°C @ VIN = 12 V 2 µA

SHUTDOWN MODE TA = +85°C @ VIN = 12 V 4 µA

ERROR PIN OUTPUT

LEAKAGE I

EL

VEO = 5 V 13 µA

ERROR PIN OUTPUT

“LOW” VOLTAGE V
PEAK LOAD CURRENT I
THERMAL REGULATION ∆ V

OUTPUT NOISE V

EOL

LDPK

V

O

NOISE

O

@ 5 V OUTPUT C

I

= 400 µA 0.13 0.3 V

SINK

VIN = Nom V

+ 1 V 200 mA

OUT

VIN = 12 V, IL = 100 mA
T = 10 ms 0.015 %/W

f = 10 Hz–100 kHz

= 0 100 µV rms

NR

CNR = 10 nF, CL = 10 µF30µV

NOTES

1

Ambient temperature of +85°C corresponds to a typical junction temperature of +125°C under typical full load test conditions.

Specifications subject to change without notice.

rms

–2–

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ADP3301

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V

Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V

Error Flag Output Voltage . . . . . . . . . . . . . . . –0.3 V to +16 V

Noise Bypass Pin Voltage . . . . . . . . . . . . . . . . –0.3 V to +5 V

Power Dissipation . . . . . . . . . . . . . . . . . . . Internally Limited

Operating Ambient Temperature Range . . . –55°C to +125°C
Operating Junction Temperature Range . . . –55°C to +125°C

θ

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W

JA

θ

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C/W

JC

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . . +300°C

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C

*This is a stress rating only; functional operation of the device at these or any other

conditions above those indicated in the operation section of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods
may affect device reliability.

ORDERING GUIDE

Model Voltage Output Package Option*

ADP3301AR-2.7 2.7 V SO-8
ADP3301AR-3 3.0 V SO-8
ADP3301AR-3.2 3.2 V SO-8
ADP3301AR-3.3 3.3 V SO-8
ADP3301AR-5 5.0 V SO-8

Contact the factory for the availability of other output voltage options.
*SO = Small Outline.

Other Members of anyCAP™* Family

Output Package

Model Current Option

2

1

Comments

ADP3300 50 mA SOT-23 High Accuracy
ADP3302 100 mA SO-8 Dual Output
ADP3304 100 mA SO-8 Dual Output with

Separate Grounds
ADP3303 200 mA SO-8 High Accuracy
ADP3306 300 mA SO-8,TSSOP-14 High Accuracy,

High Current

NOTES

1

See individual data sheets for detailed ordering information.

2

SO = Small Outline, SOT = Surface Mount, TSSOP = Thin Shrink Small
Outline.

PIN FUNCTION DESCRIPTIONS

Pin Mnemonic Function

1 & 2 OUT Output of the Regulator, fixed 2.7, 3.0,

3.2, 3.3 or 5 volts output voltage. By­pass to ground with a 0.47 µF or larger
capacitor. Pins 1 and 2 must be con-

nected together for proper operation.

3 NR Noise Reduction Pin. Used for further

reduction of the output noise. (See text

for details.) No connection if not used.
4 GND Ground Pin.
5

SD Active Low Shutdown Pin. Connect to

ground to disable the regulator output.

When shutdown is not used, this pin

should be connected to the input pin.
6 ERR Open Collector Output which goes low

to indicate that the output is about to

go out of regulation.
7 & 8 IN Regulator Input. Pins 7 and 8 must

be connected together for proper

operation.

PIN CONFIGURATION

1

OUT

2

OUT

ADP3301

TOP VIEW

3

NR

(Not to Scale)

GND

4

PIN FOR 5V DEVICE

8

IN

7

IN

6

ERR

SD

5

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP3301 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

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–3–