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ADuM4470ARIZ-RL

更新时间： 2024-02-08 08:46:37
品牌 Logo 应用领域
亚德诺 - ADI 稳压器开关
页数 文件大小 规格书
36页 750K
描述
Isolated Switching Regulator with Quad-Channel Isolators

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ADuM4470ARIZ-RL 技术参数

Source Url Status Check Date：2013-05-01 14:56:51.039是否无铅： 含铅
是否Rohs认证： 符合生命周期：Active
包装说明：SOP, SOP20,.4针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.73
其他特性：ALSO WORKS WITH 5 V INPUT;VOUT=(3.3-24 VOLT)模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制技术：PULSE WIDTH MODULATION最大输入电压：3.6 V
最小输入电压：3 V标称输入电压：3.3 V
JESD-30 代码：R-PDSO-G20长度：15.3 mm
功能数量：1端子数量：20
最高工作温度：105 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP20,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE电源：5 V
认证状态：Not Qualified座面最大高度：2.64 mm
子类别：Other Analog ICs标称供电电压 (Vsup)：5 V
表面贴装：YES最大切换频率：515 kHz
技术：DMOS温度等级：INDUSTRIAL
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：7.5 mm

ADuM4470ARIZ-RL 数据手册

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Isolated Switching Regulator  
with Quad-Channel Isolators  
Data Sheet  
ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
ISO  
V
DD1  
Isolated PWM feedback with built in compensation  
Primary side transformer driver for up to 2.5 W output power  
with 5 V input voltage  
RECT  
V
REG  
ADuM4470/  
ADuM4471/  
ADuM4472/  
ADuM4473/  
ADuM4474  
Regulated adjustable output: 3.3 V to 24 V  
Up to 80% efficiency  
Quad dc-to-25 Mbps (NRZ) signal isolation channels  
200 kHz to 1 MHz adjustable oscillator  
Soft start function at power-up  
Pulse-by-pulse overcurrent protection  
Thermal shutdown  
5000 V rms isolation  
V
DD2  
REG  
5V  
PRIMARY  
CONTROLLER/  
DRIVER  
V
DDA  
SECONDARY  
FB  
CONTROLLER  
INTERNAL  
FEEDBACK  
OC  
I/OA  
I/OA  
I/OB  
I/OC  
I/OD  
CHA  
CHB  
CHC  
CHD  
I/OB  
I/OC  
I/OD  
PRIMARY  
DATA I/O  
4-CHANNEL  
SECONDARY  
DATA I/O  
4-CHANNEL  
High common-mode transient immunity: >25 kV/μs  
20-lead SOIC package with 8.3 mm creepage  
High temperature operation: 105°C  
APPLICATIONS  
GND  
GND  
2
1
Power supply start-up bias and gate drives  
Isolated sensor interfaces  
Figure 1.  
Process controls  
RS-232/RS-422/RS-485 transceivers  
GENERAL DESCRIPTION  
The ADuM4470/ADuM4471/ADuM4472/ADuM4473/  
ADuM44741 are quad-channel, digital isolators with a regu-  
lated dc-to-dc isolated power supply controller and an internal  
MOSFET driver. The dc-to-dc controller has an internal isolated  
PWM feedback from the secondary side, based on the  
iCoupler® chip scale transformer technology and complete loop  
compensation. This eliminates the need to use an optocoupler  
for feedback and compensates the loop for stability.  
The regulated feedback provides a relatively flat efficiency curve  
over the full output power range. The ADuM447x enable a dc-  
to-dc converter with a 3.3 V to 24 V isolated output voltage  
range from either a 5.0 V or a 3.3 V input voltage, with an  
output power of up to 2.5 W.  
The ADuM447x isolators provide four independent isolation  
channels in a variety of channel configurations and data rates.  
(The x in ADuM447x throughout this data sheet stands for the  
ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474.)  
The ADuM447x isolators provide a more stable output voltage  
and higher efficiency compared to unregulated isolated dc-  
to-dc power supplies. The fully integrated feedback and loop  
compensation in a wide-body SOIC package provide a smaller  
form factor and 8.3 mm creepage distance solution.  
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7075 329 B2. Other patents pending.  
Rev. 0  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Technical Support  
©2012 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
 
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