UC3872 谐振灯镇流器控制器
UC3872 描述
The UC3872 is a resonant lamp ballast controller optimized for driving cold cathode fluorescent, neon, and other gas discharge lamps. The resonant power stage develops a sinusoidal lamp drive voltage, and minimizes switching loss and EMI generation. Lamp intensity adjustment is accomplished with a buck regulator, which is synchronized to the external power stage\x92s resonant frequency. Suitable for automotive and battery powered applications, the UC3872 draws only 1\xB5A when disabled.
Soft start and open lamp detect circuitry have been incorporated to minimize component stresses. Open lamp detection is enabled at the completion of a soft start cycle. The chip is optimized for smooth duty cycle control to 100%
|
UC2872 |
UC3872 |
| Frequency(Max)(kHz) |
200 |
200 |
| Control Topology |
Push-Pull |
Push-Pull |
| Vin(Min)(V) |
4.5 |
4.5 |
| Vin(Max)(V) |
24 |
24 |
| Shutdown Current(mA) |
1 |
1 |
| Supply Current(mA) |
11 |
11 |
| Pin/Package |
14PDIP, 16SOIC, 20PLCC |
14PDIP, 16SOIC, 16SSOP/QSOP, 20PLCC |
| Rating |
Catalog |
Catalog |
UC3872 特性
- Controls Different Types of Lamps: Cold Cathode Fluorescent, Neon, and Gas Discharge
- Zero Voltage Switching (ZVS) of Push-Pull Drivers
- Accurate Control of Lamp Current
- Variable Lamp Intensity Control
- 1\xB5A Disable Current
- 4.5V to 24V Operation
- Open Lamp Detection Circuitry
UC3872 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 |
| UC3872DW |
ACTIVE |
-40 to 85 |
5.50 | 1ku |
SOIC (DW) | 16 |
40 | TUBE |
UC3872DW |
| UC3872DWG4 |
ACTIVE |
-40 to 85 |
5.50 | 1ku |
SOIC (DW) | 16 |
40 | TUBE |
UC3872DW |
| UC3872DWTR |
ACTIVE |
-40 to 85 |
4.20 | 1ku |
SOIC (DW) | 16 |
2000 | LARGE T&R |
UC3872DW |
| UC3872DWTRG4 |
ACTIVE |
-40 to 85 |
4.20 | 1ku |
SOIC (DW) | 16 |
2000 | LARGE T&R |
UC3872DW |
| UC3872M |
ACTIVE |
0 to 70 |
3.90 | 1ku |
SSOP/QSOP (DBQ) | 16 |
75 | TUBE |
UC3872M |
| UC3872MG4 |
ACTIVE |
0 to 70 |
3.90 | 1ku |
SSOP/QSOP (DBQ) | 16 |
75 | TUBE |
UC3872M |
| UC3872MTR |
ACTIVE |
0 to 70 |
3.00 | 1ku |
SSOP/QSOP (DBQ) | 16 |
2500 | LARGE T&R |
UC3872M |
| UC3872MTRG4 |
ACTIVE |
0 to 70 |
3.00 | 1ku |
SSOP/QSOP (DBQ) | 16 |
2500 | LARGE T&R |
UC3872M |
| UC3872N |
ACTIVE |
-40 to 85 |
5.50 | 1ku |
PDIP (N) | 14 |
25 | TUBE |
UC3872N |
| UC3872NG4 |
ACTIVE |
-40 to 85 |
5.50 | 1ku |
PDIP (N) | 14 |
25 | TUBE |
UC3872N |
UC3872 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 |
| UC3872DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872DW |
UC3872DW |
| UC3872DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872DWG4 |
UC3872DWG4 |
| UC3872DWTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872DWTR |
UC3872DWTR |
| UC3872DWTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872DWTRG4 |
UC3872DWTRG4 |
| UC3872M |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872M |
UC3872M |
| UC3872MG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872MG4 |
UC3872MG4 |
| UC3872MTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872MTR |
UC3872MTR |
| UC3872MTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3872MTRG4 |
UC3872MTRG4 |
| UC3872N |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3872N |
UC3872N |
| UC3872NG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3872NG4 |
UC3872NG4 |
UC3872 应用技术支持与电子电路设计开发资源下载
- UC3872 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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