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UC3844AD PDF预览

UC3844AD

更新时间: 2024-02-22 01:48:27
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
11页 659K
描述
Current Mode PWM Controller

UC3844AD 技术参数

生命周期:Obsolete包装说明:DIE,
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.65
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 VJESD-30 代码:X-XUUC-N8
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标称输出电压:2.5 V
封装主体材料:UNSPECIFIED封装代码:DIE
封装形状:UNSPECIFIED封装形式:UNCASED CHIP
认证状态:Not Qualified最大供电电流 (Isup):25 mA
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:NO LEAD
端子位置:UPPERBase Number Matches:1

UC3844AD 数据手册

 浏览型号UC3844AD的Datasheet PDF文件第3页浏览型号UC3844AD的Datasheet PDF文件第4页浏览型号UC3844AD的Datasheet PDF文件第5页浏览型号UC3844AD的Datasheet PDF文件第7页浏览型号UC3844AD的Datasheet PDF文件第8页浏览型号UC3844AD的Datasheet PDF文件第9页 
UC1842A/3A/4A/5A  
UC2842A/3A/4A/5A  
APPLICATIONS DATA (cont.)  
Oscillator Section  
Oscillator Frequency vs Timing Resistance  
Maximum Duty Cycle vs Timing Resistor  
Open-Loop Laboratory Test Fixture  
High peak currents associated with capacitive loads necessi-  
tate careful grounding techniques. Timing and bypass capaci-  
tors should be connected close to pin 5 in a single point  
ground. The transistor and 5k potentiometer are used to sam-  
ple the oscillator waveform and apply an adjustable ramp to  
pin 3.  
Slope Compensation  
A fraction of the oscillator ramp can be resistively  
summed with the current sense signal to provide slope  
compensation for converters requiring duty cycles over  
50%.  
Note that capacitor, C, forms a filter with R2 to suppress  
the leading edge switch spikes.  
6

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