UCC3973 BiCMOS 冷阴极荧光灯驱动器控制器
UCC3973 描述
Design goals for a Cold Cathode Fluorescent Lamp (CCFL) converter used in a notebook computer or portable application include small size, high efficiency, and low cost. The UCC3972/3 CCFL controllers provide the necessary circuit blocks to implement a highly efficient CCFL backlight power supply in a small footprint 8 pin TSSOP package. The BiCMOS controllers typically consume less than 1mA of operating current, improving overall system efficiency when compared to bipolar controllers requiring 5mA to 10mA of operating current.
External parts count is minimized and system cost is reduced by integrating such features as a feedback controlled PWM driver stage, open lamp protection, startup delay and synchronization circuitry between the buck and push-pull stages
|
UCC2973 |
UCC3973 |
| Frequency(Max)(kHz) |
220 |
220 |
| Control Topology |
Push-Pull |
Push-Pull |
| Vin(Min)(V) |
4.5 |
4.5 |
| Vin(Max)(V) |
25 |
25 |
| Shutdown Current(mA) |
1 |
1 |
| Supply Current(mA) |
1 |
1 |
| Pin/Package |
8TSSOP |
8PDIP, 8TSSOP |
| Rating |
Catalog |
Catalog |
UCC3973 特性
- 1mA Typical Supply Current
- Accurate Lamp Current Control
- Analog or Low Frequency Dimming Capability
- Open Lamp Protection
- Programmable Startup Delay
- 4.5V to 25V Operation
- PWM Frequency Synchronized to External Resonant Tank
- 8 Pin TSSOP and SOIC Packages Available
- Internal Voltage Clamp Protects Transformer from Over-voltage (UCC3973)
UCC3973 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 |
| UCC3973PW |
ACTIVE |
-40 to 85 |
3.60 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
3973 |
| UCC3973PWG4 |
ACTIVE |
-40 to 85 |
3.60 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
3973 |
| UCC3973PWTR |
ACTIVE |
-40 to 85 |
3.00 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
3973 |
| UCC3973PWTRG4 |
ACTIVE |
-40 to 85 |
3.00 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
3973 |
UCC3973 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 |
| UCC3973PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3973PW |
UCC3973PW |
| UCC3973PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3973PWG4 |
UCC3973PWG4 |
| UCC3973PWTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3973PWTR |
UCC3973PWTR |
| UCC3973PWTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCC3973PWTRG4 |
UCC3973PWTRG4 |
UCC3973 应用技术支持与电子电路设计开发资源下载
- UCC3973 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)
UCC3973 相关工具