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ADP3303AR-2.7 PDF预览

ADP3303AR-2.7

更新时间： 2024-11-18 23:27:59
品牌 Logo 应用领域
亚德诺 - ADI 线性稳压器IC调节器电源电路光电二极管输出元件
页数 文件大小 规格书
8页 129K
描述
Positive Fixed Voltage Regulator

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ADP3303AR-2.7 数据手册

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High Accuracy anyCAP™  
200 mA Low Dropout Linear Regulator  
a
ADP3303  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
High Accuracy Over Line and Load ؎0.8% @ at +25؇C,  
؎1.4% Over Temperature  
Ultralow Dropout Voltage: 180 mV (Typ) @ 200 mA  
Requires Only CO = 0.47 ␮F for Stability  
anyCAP = Stable with All Types of Capacitors  
(Including MLCC)  
3.2 V to 12 V Supply Range  
Current and Thermal Limiting  
Low Noise  
ADP3303  
Q1  
OUT  
IN  
R1  
R2  
THERMAL  
PROTECTION  
CC  
ERR  
g
DRIVER  
Q2  
m
SD  
BANDGAP  
REF  
Dropout Detector  
GND  
Low Shutdown Current: < 1 ␮A  
Thermally Enhanced SO-8 Package  
Excellent Line and Load Regulation Performance  
APPLICATIONS  
Cellular Telephones  
3
NR  
ADP3303-5.0  
Notebook, Palmtop Computers  
Battery Powered Systems  
Portable Instruments  
Post Regulator for Switching Supplies  
Bar Code Scanners  
7
1
2
IN  
V
OUT  
V
= +5V  
IN  
OUT  
8
330k⍀  
C2  
0.47␮F  
C1  
0.47␮F  
ERR  
6
E
OUT  
SD  
GND  
4
5
ON  
OFF  
GENERAL DESCRIPTION  
SD  
The ADP3303 is a member of the ADP330x family of preci-  
sion low dropout anyCAP voltage regulators. The ADP3303  
stands out from the conventional LDOs with a novel architec-  
ture, an enhanced process and a new package. Its patented  
design requires only a 0.47 µF output capacitor for stability.  
This device is insensitive to capacitor Equivalent Series Resis-  
tance (ESR) and is stable with any good quality capacitor, in-  
cluding ceramic types (MLCC) for space restricted applications.  
The ADP3303 achieves exceptional accuracy of ±0.8% at room  
temperature and ±1.4% overall accuracy over temperature, line  
and load regulations. The dropout voltage of the ADP3303 is  
only 180 mV (typical) at 200 mA.  
Figure 1. Typical Application Circuit  
It features an error flag that signals when the device is about to  
lose regulation or when the short circuit or thermal overload  
protection is activated. Other features include shutdown and  
optional noise reduction capabilities. The ADP330x anyCAP  
LDO family offers a wide range of output voltages and output  
current levels:  
ADP3300 (50 mA, SOT-23)  
ADP3301 (100 mA)  
ADP3302 (100 mA, Dual Output)  
ADP3307 (100 mA, SOT-23-6)  
ADP3308 (50 mA, SOT-23-5)  
ADP3309 (100 mA, SOT-23-5)  
In addition to the new architecture and process, ADI’s new  
proprietary thermally enhanced package (Thermal Coastline)  
can handle 1 W of power dissipation without external heatsink  
or large copper surface on the PC board. This keeps PC board  
real estate to a minimum and makes the ADP3303 very attrac-  
tive for use in portable equipment.  
The ADP3303 operates with a wide input voltage range from  
3.2 V to 12 V and delivers a load current in excess of 200 mA.  
anyCAP is a trademark of Analog Devices Inc.  
REV. A  
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., 1998  
12345678

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