- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：交流/直流和隔离式直流/直流开关稳压器 - 功率因数校正 (PFC) 控制器
- 功能描述：温度范围为 –25°C 至 85°C 的 75kHz 双极连续导通模式 (CCM) PFC 控制器
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The UC3853 provides simple, yet high performance active power factor correction. Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count. The UC3853 incorporates a precision multiplier/squarer/divider circuit, voltage and current loop error amplifiers, and a precision voltage reference to implement average current mode control with RMS line voltage compensation. This control technique maintains constant loop gain with changes in input voltage, which minimizes input line current distortion over the worldwide input voltage range.
The internal 75kHz oscillator includes an external clock input, allowing synchronization to downstream converters. Additionally, the device features an overvoltage protection comparator, a clamped MOSFET gate driver which self-biases low during undervoltage lockout, and low startup and supply current.
These devices are available in 8-pin plastic and ceramic dual in-line (DIP) packages, and 8-lead small outline (SOIC) packages. The UC1853 is specified for operation from \x9655°C to +125°C, the UC2853 is specified for operation from \x9625°C to +85°C, and the UC3853 is specified for operation from 0°C to +70°C.
- Complete 8-pin Power Factor Solution
- Reduced External Components
- RMS Line Voltage Compensation
- Precision Multiplier/Squarer/Divider
- Internal 75kHz Synchronizable Oscillator
- Average Current Mode PWM Control
- Overvoltage Protection Comparator
- High Current, Clamped Gate Driver
- Topology
- Boost
- Control mode
- CCM
- Practical operating frequency (Max) (MHz)
- 0.115
- UVLO thresholds on/off (V)
- 11.5/9.5
- Device type
- Controllers
- Operating supply current (mA)
- 10
- Features
- Average Current Mode, Continuous Control Mode , OVP
- Rating
- Catalog
- Operating temperature range (C)
- -25 to 85
UC2853的完整型号有：UC2853D、UC2853DTR、UC2853N，以下是这些产品的关键参数及官网采购报价：
UC2853D，工作温度：-25 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2853D的批量USD价格：1.627（1000+）
UC2853DTR，工作温度：-25 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2853DTR的批量USD价格：1.394（1000+）
UC2853N，工作温度：-25 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网UC2853N的批量USD价格：1.801（1000+）
UC2853D，工作温度：-25 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2853D的批量USD价格：1.627（1000+）
UC2853DTR，工作温度：-25 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2853DTR的批量USD价格：1.394（1000+）
UC2853N，工作温度：-25 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网UC2853N的批量USD价格：1.801（1000+）
