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UC3903DWG4 PDF预览

UC3903DWG4

更新时间： 2024-01-17 11:11:09
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路监视器光电二极管
页数 文件大小 规格书
16页 808K
描述
Quad Supply and Line Monitor

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UC3903DWG4 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：GREEN, PLASTIC, SOIC-18针数：18
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.7
Is Samacsys：N可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G18
JESD-609代码：e4长度：11.55 mm
湿度敏感等级：2信道数量：4
功能数量：1端子数量：18
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP18,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2.65 mm
子类别：Power Management Circuits最大供电电流 (Isup)：18 mA
最大供电电压 (Vsup)：40 V最小供电电压 (Vsup)：8 V
标称供电电压 (Vsup)：15 V表面贴装：YES
技术：BIPOLAR温度等级：COMMERCIAL
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.5 mm
Base Number Matches：1

UC3903DWG4 数据手册

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UC1903  
UC2903  
UC3903  
www.ti.com ........................................................................................................................................ SLUS233A–OCTOBER 1999–REVISED SEPTEMBER 2008  
Quad Supply and Line Monitor  
1
FEATURES  
DESCRIPTION  
•
•
•
•
Inputs for Monitoring up to Four Separate  
Supply Voltage Levels  
The UC1903 family of quad supply and line monitor  
integrated circuits will respond to under- and  
over-voltage conditions on up to four continuously  
monitored voltage levels. An internal op-amp inverter  
allows at least one of these levels to be negative. A  
separate line/switcher sense input is available to  
provide early warning of line or other power source  
failures.  
Internal Inverter for Sensing a Negative Supply  
Voltage  
Line/Switch Sense Input for Early Power  
Source Failure Warning  
Programmable Under- and Over-Voltage Fault  
Thresholds with Proportional Hysteresis  
The fault window adjustment circuit on these devices  
provides easy programming of under- and  
over-voltage thresholds. The thresholds, centered  
around a precision 2.5-V reference, have an input  
hysteresis that scales with the window width for  
precise, glitch-free operation. A reference output pin  
allows the sense input fault windows to be scaled  
independently using simple resistive dividers.  
•
•
•
A Precision 2.5-V Reference  
General Purpose Op-Amp for Auxiliary Use  
Three High Current, >3 0mA, Open-Collector  
Outputs Indicate Over-Voltage, Under-Voltage  
and Power OK Conditions  
•
8-V to 40-V Supply Operation with 7-mA  
Stand-By Current  
The three open collector outputs on these devices  
sink in excess of 30 mA of load current when active.  
The under- and over-voltage outputs respond after  
separate, user defined, delays to respective fault  
conditions. The third output is active during any fault  
condition including under- and over-voltage,  
line/switcher faults, and input supply under-voltage.  
The off state of this output indicates a "power OK"  
situation.  
BLOCK DIAGRAM  
Note: Pin numbers refer to J, N and DW packages.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1999–2008, Texas Instruments Incorporated  
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UC3903DWG4 替代型号

型号 品牌 替代类型 描述 数据表
UC3903DW TI

类似代替

 Quad Supply and Line Monitor
UC3903DWTR TI

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 Quad Supply and Line Monitor
UC2903DW TI

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 Quad Supply and Line Monitor

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