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UCC3839DG4 PDF预览

UCC3839DG4

更新时间： 2024-09-25 15:55:55
品牌 Logo 应用领域
德州仪器 - TI 信息通信管理开关光电二极管
页数 文件大小 规格书
7页 247K
描述
Secondary Side Average Current Mode Controller 14-SOIC 0 to 70

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中文翻译

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UCC3839DG4 技术参数

是否无铅： 含铅生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP,
针数：14Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.24模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：20 V最小输入电压：10 V
JESD-30 代码：R-PDSO-G14长度：8.65 mm
功能数量：1端子数量：14
最高工作温度：70 °C最低工作温度：
标称输出电压：7.5 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Not Qualified
座面最大高度：1.75 mm表面贴装：YES
切换器配置：SINGLE技术：BICMOS
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：3.9 mmBase Number Matches：1

UCC3839DG4 数据手册

 浏览型号UCC3839DG4的Datasheet PDF文件第2页浏览型号UCC3839DG4的Datasheet PDF文件第3页浏览型号UCC3839DG4的Datasheet PDF文件第4页浏览型号UCC3839DG4的Datasheet PDF文件第5页浏览型号UCC3839DG4的Datasheet PDF文件第6页浏览型号UCC3839DG4的Datasheet PDF文件第7页 
UCC2839  
UCC3839  
Secondary Side Average Current Mode Controller  
FEATURES  
DESCRIPTION  
• Practical Secondary Side Control of  
The UCC3839 provides the control functions for secondary side average  
current mode control in isolated power supplies. Start up, pulse width mod-  
ulation and MOSFET drive must be accomplished independently on the  
primary side. Communication from secondary to primary side is antici-  
pated through an opto-isolator.  
Isolated Power Supplies  
• Provides a Self Regulating Bias  
Supply From a High Input Voltage  
Using an External N-Channel  
Depletion Mode FET  
Accordingly, the UCC3839 contains a fixed gain current sense amplifier,  
voltage and current error amplifiers, and a Gm type buffer/driver amplifier  
for the opto-isolator. Additional housekeeping functions include a precision  
5V reference and a bias supply regulator.  
• Onboard Precision, Fixed Gain,  
Differential Current Sense Amplifier  
• Wide Bandwidth Current Error  
Amplifier  
Power for the UCC3839 can be generated by peak rectifying the voltage of  
the secondary winding of the isolation transformer. From this unregulated  
voltage, the UCC3839’s bias supply regulator will generate its own 7.5V  
bias supply using an external, N-channel, depletion mode FET.  
• 5V Reference  
• High Current, Programmable Gm  
Amplifier Optimized to Drive  
Opto-couplers  
The UCC3839 can be configured for traditional average current mode con-  
trol where the output of the voltage error amplifier commands the current  
error amplifier. It can also be configured for output voltage regulation with  
average current mode short circuit current limiting, employing two parallel  
control loops regulating the output voltage and output current independ-  
ently.  
BLOCK DIAGRAM  
UDG-97011  
SLUS179A - APRIL 1999 - REVISED NOVEMBER 2001  
1234567

中文翻译

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