Hello,

I had a close look at the LTC3643 for handling SuperCaps, it seems to almost match our requirements. But my application seems a bit special: My system sometimes needs more (burst) current than delivered from its power input. For these situations…

亲爱的ADI老师好： 

在使用芯片的时候出现以下问题

测试条件：输入电压12v，输出电压7.2v,接2个4700uF电容。

1、在通电测试几次充放电后，GATE、CAP脚就对地短路。原理图如下：

Hi,

I plan to use the LTC3643 in a design. I have three supplies, each one with its own LTC3643. Is it possible to tie the three Vcap pins of each supply together and to put only one storage capacitor for the three supplies ? Have you already try this…

Hi everyone,

I am currently designing a power backup function using LTC3643.  I use four 470mF super capacitors in series but I had some bad issues. This function works perfectly if I use 6x 220mF in series instead of 4x 470mF.

Il would like to know how…

芯片datasheet里面写的CAP电容电压最大40V，这个充电电压是否可以调整，我接的超级电容是2.3V，不能大于该2.3V电压。

在嵌入式系统需要可靠供电的电信、工业和汽车应用中，数据丢失是个问题。供电的突然中断会在硬盘驱动器和闪存执行读写操作时损坏数据。设计人员常常使用电池、电容器和超级电容器来存储足够的能量，以在供电中断期间为关键的负载提供短期电源支持。

LTC3643 备份电源使得设计人员能够采用一种相对便宜的储能元件：低成本电解电容器。在这里提及的备份电源或保持电源中，当电源存在时，LTC3643 把一个存储电容器充电至 40 V，而当电源中断时，LTC3643 则把该存储电容器的电能释放给关键负载。负载 (输出)…