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UC3845D1 PDF预览

UC3845D1

更新时间: 2024-11-22 22:59:31
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
12页 129K
描述
SMPS Controller

UC3845D1 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.64
Is Samacsys:N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:30 V最小输入电压:12 V
标称输入电压:15 VJESD-30 代码:R-PDSO-G8
长度:4.9 mm功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出电流:1 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
座面最大高度:1.8 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:SINGLE
最大切换频率:500 kHz技术:BIPOLAR
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

UC3845D1 数据手册

 浏览型号UC3845D1的Datasheet PDF文件第2页浏览型号UC3845D1的Datasheet PDF文件第3页浏览型号UC3845D1的Datasheet PDF文件第4页浏览型号UC3845D1的Datasheet PDF文件第5页浏览型号UC3845D1的Datasheet PDF文件第6页浏览型号UC3845D1的Datasheet PDF文件第7页 
www.fairchildsemi.com  
UC3842/UC3843/UC3844/UC3845  
SMPS Controller  
Features  
Description  
• Low Start up Current  
• Maximum Duty Clamp  
• UVLO With Hysteresis  
• Operating Frequency up to 500KHz  
The UC3842/UC3843/UC3844/UC3845 are fixed  
frequencycurrent-mode PWM controller. They are specially  
designed for Off-Line and DC to DC converter applications  
with minimum external components. These integrated  
circuits feature a trimmed oscillator for precise duty cycle  
control, a temperature compensated reference, high gain  
error amplifier, current sensing comparator and a high  
current totempole output for driving a Power MOSFET. The  
UC3842 and UC3844 have UVLO thresholds of 16V (on)  
and 10V (off). The UC3843 and UC3845 are 8.5V(on) and  
7.9V (off). The UC3842 and UC3843 can operate within  
100% duty cycle. The UC3844 and UC3845 can operate  
with 50% duty cycle.  
8-SOP  
8-DIP  
1
1
1
14-SOP  
Internal Block Diagram  
* NORMALLY 8DIP/8SOP PIN NO.  
* ( ) IS 14SOP PINNO.  
* TOGGLE FLIP FLOP USED ONLY IN UC3844, UC3845  
Rev. 1.0.1  
©2002 Fairchild Semiconductor Corporation  

UC3845D1 替代型号

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