欢迎访问ic37.com |
会员登录 免费注册
发布采购

AAT3131 参数 Datasheet PDF下载

AAT3131图片预览
型号: AAT3131
PDF下载: 下载PDF文件 查看货源
内容描述: 高效率1X / 1.5X分数电荷泵的白光LED应用 [High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications]
分类和应用:
文件页数/大小: 14 页 / 275 K
品牌: AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
 浏览型号AAT3131的Datasheet PDF文件第6页浏览型号AAT3131的Datasheet PDF文件第7页浏览型号AAT3131的Datasheet PDF文件第8页浏览型号AAT3131的Datasheet PDF文件第9页浏览型号AAT3131的Datasheet PDF文件第10页浏览型号AAT3131的Datasheet PDF文件第11页浏览型号AAT3131的Datasheet PDF文件第12页浏览型号AAT3131的Datasheet PDF文件第14页  
AAT3131  
High Efficiency 1X/1.5X Fractional  
Charge Pump for White LED Applications  
VIN  
C1+  
C1  
1µF  
D1  
RB*  
D2  
RB*  
D3  
RB*  
D4  
RB*  
C1-  
VOUT  
C2+  
CIN  
COUT  
C2  
VBATTERY  
AAT3131  
1µF  
1µF  
1µF  
C2-  
D1  
D2  
D3  
EN/SET  
EN/SET  
GND  
D4  
D5  
D6  
RB*  
RB*  
*In some applications, white LED forward voltages (VF) can vary significantly. Ballast resistors between the LED cathodes and ground are recommended  
for balancing the forward voltage differences. The ballast resistor value may be approximated by the following equation:  
VSOURCE - VF  
=
RB  
IF  
Figure 2: AAT3131 Driving Two Groups of Paralleled White LEDs  
(e.g., main LCD and sub-LCD backlights).  
3131.2005.12.1.2  
13