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ADP3303AARU-REEL

更新时间： 2024-11-18 22:05:47
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
High Accuracy anyCAP⑩ Adjustable 200 mA Low Dropout Linear Regulator

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ADP3303AARU-REEL 数据手册

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High Accuracy anyCAP™ Adjustable  
200 mA Low Dropout Linear Regulator  
a
ADP3303A  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
High Accuracy Over Line and Load:  
؎0.8% @ +25؇C, ؎1.4% Over Temperature  
Ultralow Dropout Voltage: 150 mV Typical @ 200 mA  
Requires Only CO = 1 ␮F for Stability  
anyCAP = Stable with All Types of Capacitors  
(Including MLCC)  
Current and Thermal Limiting  
Low Noise  
Dropout Detector  
ADP3303A  
Q1  
OUT  
IN  
THERMAL  
PROTECTION  
CC  
ERR  
FB  
g
DRIVER  
Q2  
m
SD  
BANDGAP  
REF  
Low Shutdown Current: 1 ␮A  
3.2 V to 12 V Supply Range  
GND  
Adjustable 2.2 V to 10 V Output Range  
–20؇C to +85؇C Ambient Temperature Range  
Thermally Enhanced TSSOP-14 Package  
E
V
ERR  
ADP3303A  
APPLICATIONS  
Cellular Telephones  
Notebook, Palmtop Computers  
Battery Powered Systems  
Portable Instruments  
Post Regulator for Switching Supplies  
Bar Code Scanners  
OUT  
R3  
330k⍀  
IN  
= +5V  
V
OUT  
OUT  
IN  
R1  
R2  
C2  
1␮F  
C1  
0.47␮F  
FB  
GND  
SD  
ON  
OFF  
SD  
Figure 1. Typical Application Circuit  
GENERAL DESCRIPTION  
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 an external heat  
sink or large copper surface on the PC board. This keeps PC  
board real estate to a minimum and makes the ADP3303A very  
attractive for use in portable equipment.  
The ADP3303A is a member of the ADP330x family of preci-  
sion low dropout anyCAP voltage regulators. The ADP3303A  
stands out from conventional LDOs with a novel architecture,  
an enhanced process and a new package. Its patented design  
requires only a 1 µF output capacitor for stability. This device is  
insensitive to output capacitor ESR (Equivalent Series Resis-  
tance), and is stable with any good quality capacitor, including  
ceramic types (MLCC) for space restricted applications. The  
ADP3303A achieves exceptional accuracy of ±0.8% at room  
temperature and ±1.4% overall accuracy over temperature, line  
and load variations. The dropout voltage of the ADP3303A is  
only 150 mV (typical) at 200 mA.  
The ADP3303A operates over an input voltage range of 3.2 V  
to 12 V and delivers a load current in excess of 200 mA. The  
output voltage can be adjusted from 2.2 V to 10 V using an  
external resistor divider. It also 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 fea-  
tures include shutdown and optional noise reduction capabilities.  
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., 1999  
12345678

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