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ADP3331

更新时间： 2024-11-25 22:53:39
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
8页 138K
描述
Adjustable Output Ultralow IQ, 200 mA, SOT-23, anyCAP⑩ Low Dropout Regulator

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ADP3331 数据手册

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Adjustable Output Ultralow IQ, 200 mA,  
a
SOT-23, anyCAP™ Low Dropout Regulator  
ADP3331  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
High Accuracy Over Line and Load: ؎0.7% @ +25؇C,  
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 CO = 0.47 ␮F for Stability  
anyCAP = Stable with Any Type of Capacitor  
(Including MLCC)  
Current and Thermal Limiting  
Low Noise  
Q1  
OUT  
FB  
IN  
ADP3331  
THERMAL  
PROTECTION  
CC  
ERR  
SD  
g
Q2  
DRIVER  
m
BANDGAP  
REF  
Low Shutdown Current: <2 ␮A  
2.6 V to 12 V Supply Range  
GND  
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  
ERR  
E
V
OUT  
R 3  
330k⍀  
ADP3331  
APPLICATIONS  
OUT  
OUT  
V
IN  
Cellular Telephones  
Notebook, Palmtop Computers  
Battery Powered Systems  
PCMCIA Regulator  
IN  
R1  
R2  
+
C 2  
0.47␮F  
+
C 1  
0.47␮F  
FB  
SD  
GND  
ON  
Bar Code Scanners  
OFF  
Camcorders, Cameras  
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 µA. The ADP3331 has ultralow quies-  
cent current 34 µA (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.  
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 µF 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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
12345678

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