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UC2872QG3 PDF预览

UC2872QG3

更新时间: 2024-11-01 12:27:27
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
11页 387K
描述
Resonant Lamp Ballast Controller

UC2872QG3 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:QLCC
包装说明:QCCJ, LDCC20,.4SQ针数:20
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.82
其他特性:RESONANT CONTROL TECHNIQUE IS ALSO AVAILABLE模拟集成电路 - 其他类型:FLUORESCENT LIGHT CONTROLLER
控制模式:CURRENT-MODE控制技术:RESONANT CONTROL
最大输入电压:24 V最小输入电压:4.5 V
标称输入电压:5 VJESD-30 代码:S-PQCC-J20
JESD-609代码:e3长度:8.965 mm
湿度敏感等级:2功能数量:1
端子数量:20最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:0.1 A
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装等效代码:LDCC20,.4SQ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):260
电源:5,15 V认证状态:Not Qualified
座面最大高度:4.57 mm子类别:Switching Regulator or Controllers
最大供电电流 (Isup):14 mA表面贴装:YES
切换器配置:PUSH-PULL最大切换频率:78 kHz
技术:BIPOLAR温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:8.965 mm

UC2872QG3 数据手册

 浏览型号UC2872QG3的Datasheet PDF文件第2页浏览型号UC2872QG3的Datasheet PDF文件第3页浏览型号UC2872QG3的Datasheet PDF文件第4页浏览型号UC2872QG3的Datasheet PDF文件第5页浏览型号UC2872QG3的Datasheet PDF文件第6页浏览型号UC2872QG3的Datasheet PDF文件第7页 
application  
INFO  
UC1872  
UC2872  
UC3872  
available  
Resonant Lamp Ballast Controller  
FEATURES  
DESCRIPTION  
Controls Different Types of Lamps:  
Cold Cathode Fluorescent, Neon, and  
Gas Discharge  
The UC3872 is a resonant lamp ballast controller optimized for driving  
cold cathode fluorescent, neon, and other gas discharge lamps. The res-  
onant power stage develops a sinusoidal lamp drive voltage, and mini-  
mizes switching loss and EMI generation. Lamp intensity adjustment is  
accomplished with a buck regulator, which is synchronized to the external  
power stage’s resonant frequency. Suitable for automotive and battery  
powered applications, the UC3872 draws only 1µA when disabled.  
Zero Voltage Switching (ZVS) of  
Push-Pull Drivers  
Accurate Control of Lamp Current  
Variable Lamp Intensity Control  
1µA Disable Current  
Soft start and open lamp detect circuitry have been incorporated to mini-  
mize component stresses. Open lamp detection is enabled at the comple-  
tion of a soft start cycle. The chip is optimized for smooth duty cycle  
control to 100%.  
4.5V to 24V Operation  
Other features include a precision 1.2% reference, undervoltage lockout,  
and accurate minimum and maximum frequency control.  
Open Lamp Detection Circuitry  
BLOCK DIAGRAM  
3
2
VC  
3.0V  
REF  
AOUT  
VCC 10  
UVLO  
50k  
REF  
9
(HIGH=ENABLE)  
PUSH PULL  
OUTPUTS  
ENBL 11  
N-CHANNEL  
0.1V  
+
COMP  
INV  
4
6
TOGGLE  
T
OPEN  
LAMP  
DETECT  
1
BOUT  
EA  
20µA  
+
50k  
50k  
1.5V  
PWM  
1
+
SS  
CT  
ZD  
5
7
8
200µA  
R
S
0.2V  
OSCILLATOR  
SENSE  
OUT  
12 COUT  
ZERO DETECT  
BUCK DRIVE  
P-CHANNEL  
SYNC  
0.5V  
+
13 PGND  
14  
GND  
UDG-99112  
Note: Pin numbers shown are for DIP package.  
07/99  

UC2872QG3 替代型号

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