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UC3852D PDF预览

UC3852D

更新时间： 2024-09-09 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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UC3852D 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP, SOP8,.25
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：0.9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 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e4长度：4.9 mm
湿度敏感等级：2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峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.58 mm
子类别：Switching Regulator or Controllers最大供电电流 (Isup)：6 mA
最大供电电压 (Vsup)：30 V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：COMMERCIAL
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：3.91 mm

UC3852D 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  
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中文翻译

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UC3852D 替代型号

型号 品牌 替代类型 描述 数据表
UC3852DTR TI

类似代替

 High Power-Factor Preregulator
UC2852DTR TI

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 High Power-Factor Preregulator
UC2852D TI

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 High Power-Factor Preregulator

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