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UC2872DWG4 PDF预览

UC2872DWG4

更新时间: 2024-11-01 12:27:27
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
11页 387K
描述
Resonant Lamp Ballast Controller

UC2872DWG4 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:GREEN, SOIC-16
针数:16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.2Is Samacsys:N
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:PULSE WIDTH MODULATION
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:R-PDSO-G16
JESD-609代码:e4长度:10.3 mm
湿度敏感等级:2功能数量:1
端子数量:16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:SOP
封装等效代码:SOP16,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:2.65 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:78 kHz
技术:BIPOLAR温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

UC2872DWG4 数据手册

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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  

UC2872DWG4 替代型号

型号 品牌 替代类型 描述 数据表
UC2872DWTR TI

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Resonant Lamp Ballast Controller
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Resonant Lamp Ballast Controller
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Resonant Lamp Ballast Controller

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