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AAT2846 参数 Datasheet PDF下载

AAT2846图片预览
型号: AAT2846
PDF下载: 下载PDF文件 查看货源
内容描述: 高电流电荷泵,带有双LDO用于背光和闪光应用 [High Current Charge Pump with Dual LDO for Backlight and Flash Applications]
分类和应用:
文件页数/大小: 25 页 / 646 K
品牌: ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
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AAT2846  
High Current Charge Pump with Dual LDO  
for Backlight and Flash Applications  
Evaluation Board Layout  
Figure 6: AAT2846 Evaluation Board  
Figure 7: AAT2846 Evaluation Board  
Layout Bottom Side.  
Layout Top Side.  
The evaluation board is made flexible so that the  
user can disconnect the enable lines from the  
microcontroller and apply external enable signals.  
By removing the jumpers from J2, J3, J4 and/or J5,  
external enable signals can be applied to the  
board. External enable signals must be applied to  
pin 1 of each J2, J3, J4 or J5 terminal.  
Evaluation Board User Interface  
The user interface for the AAT2846 evaluation  
board is provided through 4 buttons and a number  
of connection terminals. The board is operated by  
supplying external power and pressing individual  
buttons or button combinations. The table below  
indicates the function of each button or button  
combination.  
When applying external enable signals, considera-  
tion must be given to the voltage levels. The exter-  
nally applied voltages cannot exceed the supply volt-  
age that is applied to the IN pins of the device (DC+).  
To power-on the board, connect a power supply or  
battery to the DC- and DC+ terminals. Make the  
board's supply connection by positioning the J1  
jumper to the ON position. A red LED indicates that  
power is applied.  
The LDO loads can be connected directly to the  
evaluation board. For adequate performance, be  
sure to connect the load between OUTA/OUTB and  
DC- as opposed to some other GND in the system.  
20  
2846.2007.08.1.0  
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