- 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：具有 10.2V/9.7V UVLO 和较小栅极驱动电阻、温度范围为 0°C 至 70°C 的 6kHz 至 220kHz CCM PFC 控制器
- 点击这里打开及下载UCC3819A的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The UCC2819A/UCC3819A provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.
Designed in Texas Instrument’s BiCMOS process, the UCC3819A offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge modulation technique to reduce ripple current in the bulk capacitor.
The UCC3819A allows the output voltage to be programmed by bringing out the error amplifier noninverting input.
The UCC3819A is directly pin for pin compatible with the UCC3819. Only the output stage of UCC3819A has been modified to allow use of a smaller external gate drive resistor values. For some power supply designs where an adequately high enough gate drive resistor can not be used, the UCC3819A offers a more robust output stage at the cost of increasing the internal gate resistances. The gate drive of the UCC3819A remains strong at ±1.2 A of peak current capability.
Available in the 16-pin D, N, and PW packages.
- Controls Boost Preregulator to Near-Unity Power Factor
- World Wide Line Operation
- Over-Voltage Protection
- Accurate Power Limiting
- Average Current Mode Control
- Improved Noise Immunity
- Improved Feed-Forward Line Regulation
- Leading Edge Modulation
- 150-μA Typical Start-Up Current
- Low-Power BiCMOS Operation
- 10.8-V to 17-V Operation
- Programmable Output Voltage (Tracking Boost Topology)
- Topology
- Boost
- Control mode
- CCM
- Practical operating frequency (Max) (MHz)
- 0.25
- UVLO thresholds on/off (V)
- 10.2/9.7
- Device type
- Controllers
- Operating supply current (mA)
- 4
- Features
- < 150W Applications, Average Current Mode, Continuous Control Mode , Enable, OVP
- Rating
- Catalog
- Operating temperature range (C)
- 0 to 70
UCC3819A的完整型号有：UCC3819AD，以下是这些产品的关键参数及官网采购报价：
UCC3819AD，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC3819AD的批量USD价格：1.186（1000+）
UCC3819AD，工作温度：0 to 70，封装：SOIC (D)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC3819AD的批量USD价格：1.186（1000+）
