Analog Devices ADP3338AKC-5, ADP3338AKC-3.3, ADP3338AKC-2.85, ADP3338AKC-2.5, ADP3338AKC-1.8 Datasheet
High-Accuracy Ultralow IQ, 1 A, anyCAP
V
IN
OUT
ADP3338
1F
1F
V
OUT
GND
IN
®
a
FEATURES
High Accuracy Over Line and Load: 0.8% @ 25C,
1.4% Over Temperature
Ultralow Dropout Voltage: 190 mV (Typ) @ 1 A
Requires Only C
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
2.7 V to 8 V Supply Range
–40C to +85C Ambient Temperature Range
SOT-223 Package
APPLICATIONS
Notebook, Palmtop Computers
SCSI Terminators
Battery-Powered Systems
Bar Code Scanners
Camcorders, Cameras
Home Entertainment Systems
Networking Systems
DSP/ASIC Supply
= 1 F for Stability
O
Low Dropout Regulator
ADP3338
FUNCTIONAL BLOCK DIAGRAM
IN
THERMAL
PROTECTION
Q1
DRIVER
GND
CC
ADP3338
g
m
BANDGAP
REF
OUT
R1
R2
GENERAL DESCRIPTION
The ADP3338 is a member of the ADP33xx family of precision
low dropout anyCAP voltage regulators. The ADP3338 operates with an input voltage range of 2.7 V to 8 V and delivers a
load current up to 1 A. The ADP3338 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 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
ADP3338 achieves exceptional accuracy of ±0.8% at room
temperature and ± 1.4% over temperature, line and load variations. The dropout voltage of the ADP3338 is only 190 mV
(typical) at 1 A. This device also includes a safety current limit
and thermal overload protection. The ADP3338 has ultralow
quiescent current 110 µA (typical) in light load situations.
anyCAP is a registered trademark of Analog Devices Inc.
Figure 1. Typical Application Circuit
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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 that
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: 781/329-4700 www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2001
ADP3338–SPECIFICATIONS
1, 2, 3
(VIN = 6.0 V, CIN = C
noted.)
= 1 F, TJ = –40C to +125C, unless otherwise
OUT
Parameter Symbol Conditions Min Typ Max Unit
OUTPUT
Voltage Accuracy V
OUT
Line Regulation V
Load Regulation I
Dropout Voltage V
DROP
VIN = V
I
T
V
I
T
V
I
T
T
T
V
OUTNOM
= 0.1 mA to 1 A
L
= 25°C
J
= V
IN
OUTNOM
= 0.1 mA to 1 A
L
= –40°C to +125°C
J
= V
IN
OUTNOM
= 50 mA to 1 A
L
= 150 °C
J
= V
IN
OUTNOM
= 25°C
J
= 0.1 mA to 1 A 0.006 mV/mA
L
= 25°C
J
= 98% of V
OUT
+ 0.4 V to 8 V –0.8 +0.8 %
+ 0.4 V to 8 V –1.4 +1.4 %
+ 0.4 V to 8 V –1.6 +1.6 %
+ 0.4 V to 12 V 0.04 mV/V
OUTNOM
IL = 1 A 190 400 mV
= 500 mA 125 200 mV
I
L
I
= 100 mA 70 150 mV
Peak Load Current I
Output Noise V
LDPK
NOISE
L
VIN = V
OUTNOM
+ 1 V 1.6 A
f = 10 Hz–100 kHz, CL = 10 µF95µV rms
IL = 1 A
GROUND CURRENT
In Regulation I
In Dropout I
GND
GND
IL = 1 A 9 30 mA
I
= 500 mA 4.5 15 mA
L
= 100 mA 0.9 3 mA
I
L
I
= 0.1 mA 110 190 µA
L
VIN = V
OUTNOM
– 100 mV 190 600 µA
IL = 0.1 mA
NOTES
1
All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.
2
Application stable with no load.
3
VIN = 2.7 V for models with V
Specifications subject to change without notice.
OUTNOM
≤ 2.2 V.
–2–
REV. 0
ADP3338
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS*
Input Supply Voltage . . . . . . . . . . . . . . . . . . –0.3 V to +8.5 V
Power Dissipation . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Ambient Temperature Range . . . . –40°C to +85°C
Operating Junction Temperature Range . . . –40°C to +150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.3°C/W
θ
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.8°C/W
θ
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; operation beyond these limits can cause the device to
be permanently damaged. Unless otherwise specified, all voltages are referenced
to GND.
PIN CONFIGURATION
ADP3338
OUT
TOP VIEW
(Not to Scale)
ORDERING GUIDE
PIN FUNCTION DESCRIPTIONS
Pin
No. Mnemonic Function
1 GND Ground Pin.
2 OUT Output of the Regulator. Bypass to
ground with a 1 µF or larger capacitor.
3 IN Regulator Input. Bypass to ground with
a 1 µF or larger capacitor.
3
IN
OUT
2
GND
1
Output Package Package
Model Voltage* Option Description
ADP3338AKC-1.8 1.8 V KC (SOT-223) Plastic Surface Mount
ADP3338AKC-2.5 2.5 V KC (SOT-223) Plastic Surface Mount
ADP3338AKC-2.85 2.85 V KC (SOT-223) Plastic Surface Mount
ADP3338AKC-3.3 3.3 V KC (SOT-223) Plastic Surface Mount
ADP3338AKC-5 5 V KC (SOT-223) Plastic Surface Mount
*Contact the factory for other voltage options.
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 ADP3338 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–
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