ADP3331ART

Manufacturer Part NumberADP3331ART
ManufacturerAnalog Devices Inc
ADP3331ART datasheet
 
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FEATURES
High Accuracy Over Line and Load:
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
–40 C to +85 C 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
GENERAL DESCRIPTION
The ADP3331 is a member of the ADP330x family of preci-
sion low dropout anyCAP voltage regulators. The ADP3331
operates with an input voltage range of 2.6 V to 12 V and deliv-
ers 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 advan-
tages and higher output current than its competition. Its pat-
ented design requires only a 0.47 F 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.
Adjustable Output Ultralow I
SOT-23, anyCAP™ Low Dropout Regulator
0.7% @ +25 C,
IN
PROTECTION
ERR
Q2
SD
V
IN
0.47 F
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 A. The ADP3331 has ultralow quies-
cent current 34 A (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: 781/329-4700
Fax: 781/326-8703
, 200 mA,
Q
ADP3331
FUNCTIONAL BLOCK DIAGRAM
Q1
ADP3331
THERMAL
CC
g
DRIVER
m
BANDGAP
REF
GND
ERR
E
OUT
R 3
ADP3331
330k
OUT
V
OUT
IN
R1
+
C 2
+
C 1
FB
0.47 F
SD
GND
R2
ON
OFF
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999
OUT
FB

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