UC3853
- 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
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.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | High Power Factor Preregulator 数据表 | 1999年 9月 5日 | |||
应用手册 | 功率因子校正电路交流电要求 | 2002年 3月 28日 | ||||
应用手册 | DN-77 Overcurrent Shutdown with the UC3853 | 1999年 9月 5日 | ||||
应用手册 | DN-78 UC3853 Demo Board | 1999年 9月 5日 | ||||
应用手册 | U-159 Boost Power Factor Corrector Design with the UC3853 | 1999年 9月 5日 |
设计和开发
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订购和质量
- RoHS
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- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点