High Accuracy, Ultralow I
Q
, 1.5 A,
anyCAP
®
Low Dropout Regulator
ADP3339
FEATURES
High accuracy over line and load: ±0.9% @ 25°C,
±1.5% over temperature
Ultralow dropout voltage: 230 mV (typ) @ 1.5 A
Requires only C
O
= 1.0 µF for stability
anyCAP = stable with any type of capacitor (including MLCC)
Current and thermal limiting
Low noise
2.8 V to 6 V supply range
–40°C to +85°C ambient temperature range
SOT-223 package
IN
THERMAL
PROTECTION
FUNCTIONAL BLOCK DIAGRAM
Q1
OUT
ADP3339
CC
g
m
R1
DRIVER
R2
02191-0-001
BANDGAP
REF
GND
APPLICATIONS
Notebook, palmtop computers
SCSI terminators
Battery-powered systems
PCMCIA regulators
Bar code scanners
Camcorders, cameras
V
IN
1
µ
F
Figure 1.
ADP3339
IN
GND
OUT
V
OUT
02191-0-002
1
µ
F
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3339 is a member of the ADP33xx family of precision,
low dropout, anyCAP voltage regulators. The ADP3339 operates
with an input voltage range of 2.8 V to 6 V and delivers a load
current up to 1.5 A. The ADP3339 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 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
ADP3339 achieves exceptional accuracy of ±0.9% at room
temperature and ±1.5% over temperature, line, and load
variations. The dropout voltage of the ADP3339 is only 230 mV
(typical) at 1.5 A. The device also includes a safety current limit
and thermal overload protection. The ADP3339 has ultralow
quiescent current: 130 µA (typical) in light load situations.
Rev. A
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.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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
© 2004 Analog Devices, Inc. All rights reserved.
ADP3339
TABLE OF CONTENTS
Specifications.................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ........................................................................ 9
Application Information................................................................ 10
Capacitor Selection .................................................................... 10
Output Current Limit ................................................................ 10
Thermal Overload Protection .................................................. 10
Calculating Power Dissipation ................................................. 10
Printed Circuit Board Layout Considerations........................ 10
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
REVISION HISTORY
6/04—Data Sheet Changed from Rev. 0 to Rev. A
Updated Format..............................................................Universal
Changes to Table 1........................................................................ 3
Changes to Thermal Overload Protection Section ................ 10
Updated Outline Dimensions ................................................... 12
Changes to Ordering Guide ...................................................... 12
10/01–Revision 0: Initial Version
Rev. A | Page 2 of 12
ADP3339
SPECIFICATIONS
1, 2
V
IN
= 6.0 V, C
IN
= C
OUT
= 1 µF, T
J
=–40°C to +125°C, unless otherwise noted.
Table 1.
Parameter
OUTPUT
Voltage Accuracy
3
Symbol
V
OUT
Conditions
V
IN
= V
OUTNOM
+ 0.5 V to 6 V, I
L
= 0.1 mA to 1.5 A, T
J
= 25°C
V
IN
= V
OUTNOM
+ 0.5 V to 6 V, I
L
= 0.1 mA to 1.5 A, T
J
= –40°C to +125°C
V
IN
= V
OUTNOM
+ 0.5 V to 6 V, I
L
= 100 mA to 1.5 A, T
J
= 150°C
V
IN
= V
OUTNOM
+ 0.5 V to 6 V, T
J
= 25°C
I
L
= 0.1 mA to 1.5 A, T
J
= 25°C
V
OUT
= 98% of V
OUTNOM
I
L
= 1.5 A
I
L
= 1 A
I
L
= 500 mA
I
L
= 100 mA
V
IN
= V
OUTNOM
+ 1 V
f = 10 Hz–100 kHz, C
L
= 10 µF, I
L
= 1.5 A
I
L
= 1.5 A
I
L
= 1 A
I
L
= 500 mA
I
L
= 100 mA
I
L
= 0.1 mA
V
IN
= V
OUTNOM
– 100 mV, I
L
= 0.1 mA
Min
–0.9
–1.5
–1.9
0.04
0.004
230
180
150
100
2.0
95
13
9
5
1
130
100
480
380
300
Typ
Max
+0.9
+1.5
+1.9
Unit
%
%
%
mV/V
mV/mA
mV
mV
mV
mV
A
µV rms
mA
mA
mA
mA
µA
µA
Line Regulation
Load Regulation
Dropout Voltage
3
V
DROP
Peak Load Current
Output Noise
GROUND CURRENT
In Regulation
I
LDPK
V
NOISE
I
GND
In Dropout
I
GND
40
25
15
3
200
300
1
2
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods.
Application stable with no load.
3
V
IN
= 2.8 V for models with V
OUTNOM
≤ 2.3 V.
Rev. A | Page 3 of 12
ADP3339
ABSOLUTE MAXIMUM RATINGS
Unless otherwise specified, all voltages are referenced to GND.
Table 2.
Parameter
Input Supply Voltage
Power Dissipation
Operating Ambient Temperature Range
Operating Junction Temperature Range
θ
JA
Four-Layer Board
θ
JC
Storage Temperature Range
Lead Temperature Range (Soldering 10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
–0.3 V to +8.5 V
Internally Limited
–40°C to +85°C
–40°C to +150°C
62.3°C/W
26.8°C/W
–65°C to +150°C
300°C
215°C
220°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability. Only one absolute maximum rating may be
applied at any one time.
ESD 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 this product 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. A | Page 4 of 12
ADP3339
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADP3339
3
IN
02191-0-003
OUT
OUT
TOP VIEW
2
(Not to Scale)
1
GND
NOTE: PIN 2 AND TAB ARE INTERNALLY CONNECTED
Figure 3. 3-Lead SOT-223 Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
1
2
3
Mnemonic
GND
OUT
IN
Function
Ground Pin.
Output of the Regulator. Bypass to Ground with a 1 µF or larger capacitor.
Regulator Input. Bypass to Ground with a 1 µF or larger capacitor.
Rev. A | Page 5 of 12
