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ADP3338AKC-3.3-RL7 Datasheet(PDF) 1 Page - Analog Devices

Part # ADP3338AKC-3.3-RL7
Description  High Accuracy, Ultralow IQ, 1A, anyCAP Low Dropout Regulator
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3338AKC-3.3-RL7 Datasheet(HTML) 1 Page - Analog Devices

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High Accuracy, Ultralow IQ, 1 A,
anyCAP® Low Dropout Regulator
ADP3338
Rev. B
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: 781.461.3113
©2005 Analog Devices, Inc. All rights reserved.
FEATURES
High accuracy over line and load: ±0.8% @ 25°C,
±1.4% over temperature
Ultralow dropout voltage: 190 mV (typ) @ 1 A
Requires only CO = 1.0 µF for stability
anyCAP is stable with any type of capacitor (including MLCC)
Current and thermal limiting
Low noise
2.7 V to 8 V supply range
−40°C to +85°C 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 supplies
FUNCTIONAL BLOCK DIAGRAM
THERMAL
PROTECTION
CC
IN
ADP3338
OUT
R1
R2
GND
Q1
BANDGAP
REF
DRIVER
gm
Figure 1.
VIN
OUT
ADP3338
1
µF
1
µF
VOUT
GND
IN
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3338 is a member of the ADP33xx family of precision,
low dropout (LDO), 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
conventional LDOs with a novel architecture and an enhanced
process that offers 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. The device also
includes a safety current limit and thermal overload protection.
The ADP3338 has ultralow quiescent current: 110 µA (typical)
in light load situations.


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