UCC3974 双路冷阴极荧光灯控制器
|
UCC3974 |
| Frequency(Max)(kHz) |
220 |
| Control Topology |
Push-Pull |
| Vin(Min)(V) |
4.5 |
| Vin(Max)(V) |
25 |
| Shutdown Current(mA) |
0.3 |
| Supply Current(mA) |
2 |
| Pin/Package |
16TSSOP |
| Rating |
Catalog |
UCC3974 描述
Design goals for a cold cathode fluorescent lamp (CCFL) converter used for a liquid crystal display (LCD) monitor application include small size, high efficiency, and low cost. The UCC2974/UCC3974 CCFL controllers provide the necessary circuit blocks to implement a highly efficient LCD monitor backlight supply in a small 16-pin TSSOP package. The device features two control stages for operating independent resonant tanks for multi-lamp designs. The BiCMOS controller typically consumes less than 2-mA of operating current, improving overall system efficiency. External parts count is minimized and system cost is reduced by integrating such features as dual PWM driver stages, open lamp protection, overvoltage clamp, and synchronization circuitry between the buck and push-pull stages.
UCC3974 特性
- Synchronous or Nonsynchronous Operation
- Dual Output and Control Stages
- BiCMOS Technology
- Accurate Current Control with 2-mA Typical Supply Current
- Analog or Digital Low-Frequency Dimming Capability
- Open Lamp Protection with Voltage Clamp
- 4.5-V to 25-V Operation
- PWM Frequencies Synchronized to External Resonant Tanks
- TSSOP-16 (PW) Package
- APPLICATIONS
- Portable PCs
- Desktop LCD Monitors
- Internet Appliances
UCC3974 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 |
| UCC3974PW |
ACTIVE |
0 to 70 |
5.00 | 1ku |
TSSOP (PW) | 16 |
90 | TUBE |
UCC3974 |
| UCC3974PWG4 |
ACTIVE |
0 to 70 |
5.00 | 1ku |
TSSOP (PW) | 16 |
90 | TUBE |
UCC3974 |
| UCC3974PWR |
ACTIVE |
0 to 70 |
4.15 | 1ku |
TSSOP (PW) | 16 |
2000 | LARGE T&R |
UCC3974 |
| UCC3974PWRG4 |
ACTIVE |
0 to 70 |
4.15 | 1ku |
TSSOP (PW) | 16 |
2000 | LARGE T&R |
UCC3974 |
UCC3974 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 |
| UCC3974PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3974PW |
UCC3974PW |
| UCC3974PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3974PWG4 |
UCC3974PWG4 |
| UCC3974PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3974PWR |
UCC3974PWR |
| UCC3974PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3974PWRG4 |
UCC3974PWRG4 |
UCC3974 应用技术支持与电子电路设计开发资源下载
- UCC3974 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)
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