ADP3339 데이터 시트보기 (PDF) - Analog Devices
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ADP3339 Datasheet PDF : 15 Pages
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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 CO = 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
APPLICATIONS
Notebook, palmtop computers
SCSI terminators
Battery-powered systems
PCMCIA regulators
Bar code scanners
Camcorders, cameras
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.
High Accuracy, Ultralow IQ, 1.5 A,
anyCAP® Low Dropout Regulator
ADP3339
FUNCTIONAL BLOCK DIAGRAM
IN
Q1
THERMAL
PROTECTION
CC
ADP3339
OUT
R1
DRIVER
gm
R2
BANDGAP
REF
VIN
1µF
GND
Figure 1.
ADP3339
IN
OUT
GND
VOUT
1µF
Figure 2. Typical Application Circuit
Rev. A
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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.
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