UC3871 谐振荧光灯驱动器
UC3871 描述
The UC1871 Family of IC\x92s is optimized for highly efficient fluorescent lamp control. An additional PWM controller is integrated on the IC for applications requiring an additional supply, as in LCD displays. When disabled the IC draws only 1uA, providing a true disconnect feature, which is optimum for battery powered systems. The switching frequency of all outputs are synchronized to the resonant frequency of the external passive network, which provides Zero Voltage Switching on the Push-Pull drivers.
Soft-Start and open lamp detect circuitry have been incorporated to minimize component stress. An open lamp is detected on the completion of a soft-start cycle.
The Buck controller is optimized for smooth duty cycle control to 100%, while the flyback control ensures a maximum duty cycle of 95%
|
UC2871 |
UC3871 |
| Frequency(Max)(kHz) |
200 |
200 |
| Control Topology |
Push-Pull |
Push-Pull |
| Vin(Min)(V) |
4.5 |
4.5 |
| Vin(Max)(V) |
20 |
20 |
| Shutdown Current(mA) |
1 |
1 |
| Supply Current(mA) |
15 |
15 |
| Pin/Package |
18PDIP, 18SOIC, 20PLCC |
18PDIP, 18SOIC, 20PLCC |
| Rating |
Catalog |
Catalog |
UC3871 特性
- 1uA ICC when Disabled
- PWM Control for LCD Supply
- Zero Voltage Switched (ZVS) on Push-Pull Drivers
- Open Lamp Detect Circuitry
- 4.5V to 20V Operation
- Non-saturating Transformer Topology
- Smooth 100% Duty Cycle on Buck PWM and 0% to 95% on Flyback PWM
UC3871 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） | Quantity |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| UC3871DW |
ACTIVE |
-40 to 85 |
6.75 | 1ku |
SOIC (DW) | 18 |
40 | TUBE |
UC3871DW |
| UC3871DWG4 |
ACTIVE |
-40 to 85 |
6.75 | 1ku |
SOIC (DW) | 18 |
40 | TUBE |
UC3871DW |
| UC3871N |
ACTIVE |
-40 to 85 |
6.75 | 1ku |
PDIP (N) | 18 |
20 | TUBE |
UC3871N |
| UC3871NG4 |
ACTIVE |
-40 to 85 |
6.75 | 1ku |
PDIP (N) | 18 |
20 | TUBE |
UC3871N |
UC3871 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| UC3871DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3871DW |
UC3871DW |
| UC3871DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3871DWG4 |
UC3871DWG4 |
| UC3871N |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3871N |
UC3871N |
| UC3871NG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3871NG4 |
UC3871NG4 |
UC3871 应用技术支持与电子电路设计开发资源下载
- UC3871 数据资料 dataSheet 下载.PDF
- TI 德州仪器照明解决方案产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
UC3871 相关工具