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UC2852DG4 PDF预览

UC2852DG4

更新时间： 2024-09-14 12:02:03
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
10页 405K
描述
High Power-Factor Preregulator

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中文翻译

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UC2852DG4 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.19
模拟集成电路 - 其他类型：POWER FACTOR 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：12.5 V标称输入电压：24 V
JESD-30 代码：R-PDSO-G8JESD-609代码：e4
长度：4.89 mm湿度敏感等级：2
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
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
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 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：200 kHz技术：BIPOLAR
温度等级：INDUSTRIAL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：3.9 mmBase Number Matches：1

UC2852DG4 数据手册

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UC1852  
UC2852  
UC3852  
High Power-Factor Preregulator  
FEATURES  
DESCRIPTION  
The UC1852 provides a low-cost solution to active power-factor correction (PFC)  
for systems that would otherwise draw high peak current pulses from AC power  
lines. This circuit implements zero-current switched boost conversion, producing  
sinusoidal input currents with a minimum of external components, while keeping  
peak current substantially below that of fully-discontinuous converters.  
•
Low-Cost Power Factor  
Correction  
•
•
•
•
•
•
•
•
•
Power Factor Greater Than 0.99  
Few External Parts Required  
Controlled On-Time Boost PWM  
Zero-Current Switching  
The UC1852 provides controlled switch on-time to regulate the output bulk DC  
voltage, an off-time defined by the boost inductor, and a zero-current sensing  
circuit to reactivate the switch cycle. Even though switching frequency varies with  
both load and instantaneous line voltage, it can be maintained within a reasonable  
range to minimize noise generation.  
Limited Peak Current  
Min and Max Frequency Limits  
Starting Current Less Than 1mA  
High-Current FET Drive Output  
Under-Voltage Lockout  
While allowing higher peak switch currents than continuous PFCs such as the  
UC1854, this device offers less external circuitry and smaller inductors, yet better  
performance and easier line-noise filtering than discontinuous current PFCs with  
no sacrifice in complexity or cost. The ability to obtain a power factor in excess of  
0.99 makes the UC1852 an optimum choice for low-cost applications in the 50 to  
500 watt power range. Protection features of these devices include under-voltage  
lockout, output clamping, peak-current limiting, and maximum-frequency  
clamping.  
The UC1852 family is available in 8-pin plastic and ceramic dual in-line packages,  
and in the 8-pin small outline IC package (SOIC). The UC1852 is specified for  
operation from -55°C to +125°C, the UC2852 is specified for operation from -40°C  
to +85°C, and the UC3852 is specified for operation from 0°C to +70°C.  
TYPICAL APPLICATION  
UDG-92001  
10/94  
1234567...10

中文翻译

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UC2852DG4 替代型号

型号 品牌 替代类型 描述 数据表
UC3852DTRG4 TI

完全替代

 High Power-Factor Preregulator
UC2852DTRG4 TI

完全替代

 High Power-Factor Preregulator
UC3852D TI

类似代替

 High Power-Factor Preregulator

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 		63kHz bipolar continuous conduction mode (CCM) PFC controller, -40°C to 105&de

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