Analog Devices ADP3331 Datasheet

Adjustable Output Ultralow IQ, 200 mA,

a

SOT-23, anyCAP™ Low Dropout Regulator

FEATURES
High Accuracy Over Line and Load: ⴞ0.7% @ +25ⴗC,

1.4% Over Temperature
Ultralow Dropout Voltage: 140 mV (Typ) @ 200 mA
Can Be Used as a High Current (>1 A) LDO

Controller

Requires Only C

= 0.47 ␮F for Stability

O

anyCAP = Stable with Any Type of Capacitor

(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: <2 ␮A

2.6 V to 12 V Supply Range

1.5 V to 10 V Output Range
–40ⴗC to +85ⴗC Ambient Temperature Range
Ultrasmall Thermally Enhanced Chip-on-Lead™

SOT-23-6 Lead Package

APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulator
Bar Code Scanners
Camcorders, Cameras

ERR

SD

ADP3331

FUNCTIONAL BLOCK DIAGRAM

DRIVER

GND

ADP3331

IN

SD

ON

OFF

Q1

ERR

OUT

GND

FB

CC

ADP3331

g

m

BANDGAP

R3
330kV

R1

+

R2

REF

E

V

C2

0.47mF

OUT

OUT

IN

THERMAL

PROTECTION

Q2

V

IN

+

C1

0.47mF

OUT

FB

GENERAL DESCRIPTION

The ADP3331 is a member of the ADP330x family of preci­sion low dropout anyCAP voltage regulators. The ADP3331
operates with an input voltage range of 2.6 V to 12 V and deliv­ers a load current up to 200 mA. The ADP3331 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 pat-

ented design requires only a 0.47 µF output capacitor for

stability. This device is insensitive to capacitor Equivalent
Series Resistance (ESR), and is stable with any good quality
capacitor, including ceramic (MLCC) types for space restricted

anyCAP and Chip-on-Lead are trademarks 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.

Figure 1. Typical Application Circuit

applications. The ADP3331 achieves exceptional accuracy of

±0.7% at room temperature and ±1.4% overall accuracy over

temperature, line and load variations. The dropout voltage of
the ADP3331 is only 140 mV (typical) at 200 mA. This device
also includes a safety current limit, thermal overload protection
and a shutdown feature. In shutdown mode, the ground current is

reduced to less than 2 µA. The ADP3331 has ultralow quies­cent current 34 µA (typical) in light load situations. The

SOT-23-6 package has been thermally enhanced using Analog
Device’s proprietary Chip-on-Lead feature to maximize power
dissipation.

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., 1999

ADP3331–SPECIFICATIONS

(@TA = –40ⴗC to +85ⴗC, VIN = 7 V, CIN = 0.47 ␮F, C

1, 2

noted)

= 0.47 ␮F, unless otherwise

OUT

Parameter Symbol Conditions Min Typ Max Units

OUTPUT VOLTAGE ACCURACY

HIGH OUTPUT VOLTAGE RANGE V

OUTPUT VOLTAGE ACCURACY

LOW OUTPUT VOLTAGE RANGE V

LINE REGULATION ∆V

LOAD REGULATION ∆V

GROUND CURRENT I

GROUND CURRENT I

IN DROPOUT I

DROPOUT VOLTAGE V

PEAK LOAD CURRENT I

OUTPUT NOISE V

SHUTDOWN THRESHOLD V

3

3

O

∆V

IN

O

∆I

L

GND

GND

DROP

LDPK

NOISE

THSD

VIN = V

I
T
V
V
I
T
V
V
I
T

OUTNOM

OUTNOM

= 0.1 mA to 200 mA,

L

= +25°C –0.7 +0.7 %

A

= V

IN

OUTNOM

OUTNOM

= 0.1 mA to 150 mA,

L

= –40°C to +85°C –1.4 +1.4 %

A

= V

IN

OUTNOM

OUTNOM

= 0.1 mA to 200 mA,

L

= –20°C to +85°C –1.4 +1.4 %

A

+ 0.25 V to 12 V,

≥ 2.35 V,

+ 0.25 V to 12 V,

≥ 2.35 V,

+ 0.25 V to 12 V,

≥ 2.35 V,

VIN = 2.6 V to 12 V,

= 1.5 V to 2.35 V,

OUTNOM

= 0.1 mA to 200 mA,

I

L

= +25°C –0.7 +0.7 %

T

A

= 2.6 V to 12 V,

V

IN

V
I

L

T
V
V
I

L

T

VIN = V
T

= 1.5 V to 2.35 V,

OUTNOM

= 0.1 mA to 150 mA,

= –40°C to +85°C –1.4 +1.4 %

A

= 2.6 V to 12 V,

IN

= 1.5 V to 2.35 V,

OUTNOM

= 0.1 mA to 200 mA,

= –20°C to +85°C –1.4 +1.4 %

A

OUTNOM

= +25°C 0.06 mV/V

A

+0.25 V to 12 V

IL= 0.1 mA to 200 mA
T

= +25°C 0.04 mV/mA

A

IL = 200 mA, T

= 150 mA 1.2 3.1 mA

I

L

= 50 mA 0.4 1.1 mA

I

L

I

= 0.1 mA 34 50 µA

L

VIN = V

V

OUTNOM

= 0.1 mA 37 55 µA

L

= 98% of V

OUT

IL = 200 mA, T

= 150 mA 0.11 0.17 V

I

L

= 10 mA 0.042 0.06 V

I

L

IL = 1 mA 0.025 0.05

VIN = V

OUTNOM

f = 10 Hz–100 kHz, C

= 200 mA, CNR = 10 nF, V

I

L

f = 10 Hz–100 kHz, C
IL = 200 mA, CNR = 0 nF, V

= –20°C to +85°C 1.6 4.0 mA

A

– 100 mV

OUTNOM

= –20°C to +85°C 0.14 0.23 V

A

2

V

+ 1 V 300 mA

= 10 µF

L

= 10 µF

L

= 3 V 47 µV rms

OUT

= 3 V 95 µV rms

OUT

ON 2.0 V
OFF 0.4 V

SHUTDOWN PIN INPUT CURRENT I

SD

0 < SD
0 < SD

≤ 12 V 1.9 9 µA
≤ 5 V 1.4 6 µA

GROUND CURRENT IN

SHUTDOWN MODE I

GNDSD

SD = 0 V, V

= 12 V 0.01 2 µA

IN

REV. 0–2–

ADP3331

WARNING!

ESD SENSITIVE DEVICE

Parameter Symbol Conditions Min Typ Max Units

OUTPUT CURRENT IN I

OSD

SHUTDOWN MODE T

ERROR PIN OUTPUT LEAKAGE I

EL

ERROR PIN OUTPUT

“LOW” VOLTAGE V

NOTES

1

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

2

Application stable with no load.

3

Assumes the use of ideal resistors. Overall accuracy also depends on the tolerance of the external resistors used to set the output voltage.

Specifications subject to change without notice.

EOL

T

= +25°C @ VIN = 12 V 1 µA

A

= +85°C @ VIN = 12 V 2 µA

A

V

= 5 V 1 µA

EO

I

= 400 µA 0.19 0.40 V

SINK

ABSOLUTE MAXIMUM RATINGS*

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

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

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

Operating Ambient Temperature Range . . . . –40°C to +85°C

Operating Junction Temperature Range . . . –40°C to +125°C

␣ (4-Layer Board) . . . . . . . . . . . . . . . . . . . . . . . 165°C/W

θ

JA

␣ (2-Layer Board) . . . . . . . . . . . . . . . . . . . . . . . 190°C/W

θ

JA

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; operation beyond these limits can cause the device to

be permanently damaged.

ORDERING GUIDE

Output Marking

Model Voltage Package Option Code

ADP3331ART ADJ RT-6 (SOT-23-6) L9B

PIN FUNCTION DESCRIPTIONS

Pin Name Function

1 OUT Output of the Regulator. Bypass to ground

with a 0.47 µF or larger capacitor.

2 IN Regulator Input.
3 ERR Open Collector Output that goes low to

indicate that the output is about to go out

of regulation.
4 GND Ground.
5 FB Feedback Input. Connect to an external

resistor divider which sets the output

voltage.
6 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.

PIN CONFIGURATION

OUT

ERR

IN

1

ADP3331

2

TOP VIEW

(Not to Scale)

3

6

SD

5

FB

4

GND

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 ADP3331 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.

REV. 0 –3–