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UCC2839DTR PDF预览

UCC2839DTR

更新时间： 2024-01-18 19:47:09
品牌 Logo 应用领域
其他 - ETC 开关控制器
页数 文件大小 规格书
6页 236K
描述
Current/Voltage-Mode SMPS Controller

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UCC2839DTR 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIP包装说明：DIP, DIP14,.3
针数：14Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.9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：8 V最小输入电压：7 V
标称输入电压：7.5 VJESD-30 代码：R-GDIP-T14
功能数量：1端子数量：14
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.01 A封装主体材料：CERAMIC, GLASS-SEALED
封装代码：DIP封装等效代码：DIP14,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
子类别：Switching Regulator or Controllers表面贴装：NO
切换器配置：SINGLE最大切换频率：1000 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED

UCC2839DTR 数据手册

 浏览型号UCC2839DTR的Datasheet PDF文件第2页浏览型号UCC2839DTR的Datasheet PDF文件第3页浏览型号UCC2839DTR的Datasheet PDF文件第4页浏览型号UCC2839DTR的Datasheet PDF文件第5页浏览型号UCC2839DTR的Datasheet PDF文件第6页 
UCC1839  
UCC2839  
UCC3839  
Secondary Side Average Current Mode Controller  
FEATURES  
DESCRIPTION  
• Practical Secondary Side Control of  
Isolated Power Supplies  
The UCC3839 provides the control functions for secondary side average  
current mode control in isolated power supplies. Start up, pulse width  
modulation and MOSFET drive must be accomplished independently on  
the primary side. Communication from secondary to primary side is antici-  
pated through an opto-isolator.  
• 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  
04/99  
Powered by ICminer.com Electronic-Library Service CopyRight 2003  
123456

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