AMC7135 with rechargeable battery

[MRsDNF]

Hi and welcome Juanita.dlc. This thread is discussing these chips. Maybe it will be off some help if there not wired up correctly.

Can I use 2 7135 chips to produce 700mA?

I have a driver going into a light that is supposed to be putting out some 700mA to a Nichia 219. I wanted to see what kind of power that is and I have some 7135 chips, so I figured that if I stacked 2 chips inline on the power lead to a Nichia 219 on a copper star it would be a fair semblance of what the light would be doing. But it is very very dim. What am I doing wrong? Can I do it this way? I literally soldered the backside ground of a chip to a copper SinkPAD to hold it down. Then stacked…