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ADP3342ARM-REEL7 PDF预览

ADP3342ARM-REEL7

更新时间： 2024-11-22 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 164K
描述
Ultralow, IQ, anyCAP Low Dropout Regulator

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ADP3342ARM-REEL7 数据手册

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®
Ultralow, IQ, anyCAP  
Low Dropout Regulator  
a
ADP3342  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Accuracy Over Line and Load: ؎4.0% @ 25؇C,  
؎5% Over Temperature  
Ultralow Dropout Voltage: 300 mV (Typ) @ 300 mA  
Requires Only CO = 1.0 ␮F for Stability  
anyCAP = Stable with any Type of Capacitor  
(including MLCC)  
Current and Thermal Limiting  
Low Shutdown Current: < 2 ␮A  
1.7 V Յ VIN Յ 6 V  
Q1  
IN  
OUT  
VCC  
THERMAL  
CC  
PROTECTION  
g
DRIVER  
m
PWRGD  
SD  
BANDGAP +  
REF –  
2.8 V Յ VCC Յ 6 V  
ADP3342  
VOUT = 1.2 V ؎5%  
–40؇C to +100؇C Ambient Temperature Range  
Ultrasmall Thermally Enhanced 8-Lead MSOP Package  
GND  
APPLICATIONS  
Notebook PCs  
Desktop PCs  
3.3V  
GENERAL DESCRIPTION  
The ADP3342 is a unique member of the ADP330x family of  
precision low dropout anyCAP voltage regulators. The ADP3342  
operates with an input voltage range of 1.7 V to 6 V and delivers  
a continuous load current up to 300 mA. In order to support the  
ability to regulate from such a low input voltage, the power rail  
to the IC, VCC, has been split off from the main power rail, VIN,  
from which the output is powered.  
VCC  
ADP3342  
V
1.8V  
V
OUT  
1.2V  
IN  
IN  
OUT  
+
+
1␮F  
1␮F  
IN  
OUT  
SD PWRGD  
ON  
GND  
OFF  
The ADP3342 stands out from the conventional LDOs with the  
lowest thermal resistance of any MSOP-8 package and an enhanced  
process that enables it to offer performance advantages beyond  
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 dropout voltage of the ADP3342 is  
only 190 mV (typical) at 300 mA. This device also includes a  
safety current limit, thermal overload protection and a shutdown  
control pin.  
Figure 1. Typical Application Circuit  
anyCAP is a registered trademark 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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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  
www.analog.com  
© Analog Devices, Inc., 2002  
12345678

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