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ADP3333ARM-15 bảng dữ liệu(HTML) 1 Page - Analog Devices

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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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
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
ADP3333
High Accuracy Ultralow IQ, 300 mA,
anyCAP® Low Dropout Regulator
FUNCTIONAL BLOCK DIAGRAM
THERMAL
PROTECTION
CC
IN
ADP3333
OUT
GND
Q1
BANDGAP
REF
DRIVER
gm
SD
R1
R2
FEATURES
High Accuracy Over Line and Load:
0.8% @ 25 C,
1.8% Over Temperature
Ultralow Dropout Voltage: 230 mV (Max) @ 300 mA
Requires Only CO = 1.0
F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1
A
2.6 V to 12 V Supply Range
–40 C to +85 C Ambient Temperature Range
Ultrasmall 8-Lead MSOP Package
APPLICATIONS
Cellular Phones
PCMCIA Cards
Personal Digital Assistants (PDAs)
DSP/ASIC Supplies
GENERAL DESCRIPTION
ADP3333 is a member of the ADP333x family of precision low
dropout anyCAP voltage regulators. Pin-compatible with the
MAX8860, the ADP3333 operates with a wider input voltage
range of 2.6 V to 12 V and delivers a load current up to 300 mA.
ADP3333 stands out from other conventional LDOs with a
novel architecture and an enhanced process that enables it to
offer performance advantages over its competition. Its patented
design requires only a 1.0
µF output capacitor for stability. This
device is insensitive to output capacitor Equivalent Series Resis-
tance (ESR), and is stable with any good quality capacitor,
including ceramic (MLCC) types for space-restricted applica-
tions. ADP3333 achieves exceptional accuracy of
±0.8% at
room temperature and
±1.8% over temperature, line and load
variations. The dropout voltage of ADP3333 is only 140 mV
(typical) at 300 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
1
µA. The ADP3333 has ultralow quiescent current, 70 µA (typ)
in light load situations.
ADP3333
NC
VIN
IN
GND
VOUT
ON
OFF
OUT
SD
CIN
1 F
COUT
1 F
NC = NO CONNECT
Figure 1. Typical Application Circuit
anyCAP is a registered trademark of Analog Devices, Inc.


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