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UCC3975PW PDF预览

UCC3975PW

更新时间: 2024-01-17 01:18:07
品牌 Logo 应用领域
德州仪器 - TI 变压器控制器
页数 文件大小 规格书
28页 434K
描述
MULTI TOPOLOGY PIEZOELECTRIC TRANSFORMER CONTROLLER

UCC3975PW 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:TSSOP-8针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.84
Is Samacsys:N模拟集成电路 - 其他类型:FLUORESCENT LIGHT CONTROLLER
控制技术:RESONANT CONTROL最大输入电压:13.5 V
最小输入电压:3 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e4
长度:4.4 mm功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源:3/13.5 V认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:105 kHz技术:CMOS
温度等级:COMMERCIAL端子面层:NICKEL PALLADIUM GOLD
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL宽度:3 mm
Base Number Matches:1

UCC3975PW 数据手册

 浏览型号UCC3975PW的Datasheet PDF文件第20页浏览型号UCC3975PW的Datasheet PDF文件第21页浏览型号UCC3975PW的Datasheet PDF文件第22页浏览型号UCC3975PW的Datasheet PDF文件第24页浏览型号UCC3975PW的Datasheet PDF文件第25页浏览型号UCC3975PW的Datasheet PDF文件第26页 
ꢀꢁꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢀꢁꢁ ꢂ ꢃꢄ ꢇ ꢆ ꢀ ꢁꢁ ꢂꢃ ꢄꢄ  
ꢀꢁꢁ ꢈ ꢃꢄ ꢅ ꢆ ꢀꢁꢁ ꢈ ꢃꢄ ꢇ ꢆ ꢀ ꢁꢁ ꢈꢃ ꢄꢄ  
SLUS499A NOVEMBER 2001 REVISED JANUARY 2002  
APPLICATION INFORMATION  
open lamp shutdown/no-lock operation (continued)  
Figure 20 shows the startup performance of the UCC397x family based system with a broken or open lamp.  
The open lamp trip level is typically set 20% to 50% higher than the required strike voltage of the lamp, in this  
example the open lamp trip level is set at a low 500 V  
. As seen in Figure 21, the lamp does not strike before  
RMS  
the OPEN/SD pin reaches 1.5 V indicating an open lamp, the controller retries seven times before entering an  
error shutdown state (see the state diagram in the pin description section).  
V
COMP  
V
V
OPEN/SD  
PZT  
Figure 20. Start-Up With Open Lamp  
A second type of failure mode occurs if the system fails to control lamp current. Assuming a proper feedback  
network, this failure can occur if the input voltage is too low to operate the lamp or if one of the components in  
the power path is open, shorted, or broken. These failures are detected at the COMP pin. Figure 21 shows the  
system response where the input voltage is not sufficient for lamp operation. At startup the frequency sweeps  
through the range until COMP reaches 2.5 V, the controller attempts seven retries before entering the error  
shutdown state. Notice the slope on the COMP pin (trace 2) changes as the system attempts to operate the lamp  
in a high gain region but is ultimately unsuccessful.  
23  
www.ti.com  

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