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ADP3335ARM-2.85

更新时间： 2024-11-23 12:47:59
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
16页 258K
描述
High Accuracy, Ultralow IQ, 500 mA, anyCAP Low Dropout Regulator

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ADP3335ARM-2.85 数据手册

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High Accuracy, Ultralow IQ, 500 mA,  
anyCAP Low Dropout Regulator  
Data Sheet  
ADP3335  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
High accuracy over line and load: 0.9% at 25°C, 1.8% over  
temperature  
Ultralow dropout voltage: 200 mV (typical) at 500 mA  
Requires only CO = 1.0 µF for stability  
anyCAP® = stable with any type of capacitor (including MLCC)  
Current and thermal limiting  
Q1  
OUT  
NR  
IN  
ADP3335  
R1  
R2  
THERMAL  
PROTECTION  
CC  
DRIVER  
gm  
SD  
+
BANDGAP  
REF  
Low noise  
–
Low shutdown current: < 10 nA (typical)  
2.6 V to 12 V supply range  
–40°C to +85°C ambient temperature range  
GND  
Figure 1.  
APPLICATIONS  
5
PCMCIA cards  
NR  
Cellular phones  
ADP3335  
Camcorders, cameras  
Networking systems, DSL/cable modems  
Cable set-top box  
3
2
1
OUT  
IN  
7
8
OUT  
OUT  
V
IN  
V
OUT  
IN  
SD  
+
+
C
IN  
1µF  
C
OUT  
1µF  
GND  
4
MP3/CD players  
6
DSP supplies  
ON  
OFF  
Figure 2. Typical Application Circuit  
GENERAL DESCRIPTION  
The ADP3335 is a member of the ADP333x family of precision,  
low dropout, anyCAP voltage regulators. It operates with an input  
voltage range of 2.6 V to 12 V, and delivers a continuous load  
current up to 500 mA. The ADP3335 stands out from conventional  
low dropout regulators (LDOs) by using an enhanced process  
enabling 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 ADP3335 achieves exceptional accuracy of  
0.9% at room temperature and 1.8% over temperature, line,  
and load.  
The dropout voltage of the ADP3335 is only 200 mV (typical) at  
500 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 ADP3335 has  
a low quiescent current of 80 µA (typical) in light load situations.  
Rev. D  
Document Feedback  
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. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2000–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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