DirtyLude
Well-Known Member
I'm not new to regulators. I've been doing this for a while, but I got these tiny MCP1700t 5v regulators in SOT23 package and they aren't working for me.
MCP1700
I put them on my circuit board and they are just piping whatever input voltage I'm putting in straight to the output pin. No regulation whatsoever. I thought it might have something to do with the board, so I just soldered wire onto one and tested it on a breadboard, but I get the same thing. So, I've tested 2 of them with the same result.
Input is the single top lead, then on the bottom it's ground on the left and regulated output on the right. It's just not that complex, but it's not working. I put in 13v and I get 13v out. I don't have any bypass capacitors on the breadboard, but on my circuit board I had a 4.7uf input and 0.1uf output capacitor.
The full part number is MCP1700T-5002E/TT. I checked the package labeling itself and it is labeled as the 5v regulator.
I'm hoping I'm just doing something stupid, because I'm stumped here. If nobody can figure this out, I can take pictures of exactly how I have it connected. I've gone over the connections against the datasheet about a dozen times now, though.
MCP1700
I put them on my circuit board and they are just piping whatever input voltage I'm putting in straight to the output pin. No regulation whatsoever. I thought it might have something to do with the board, so I just soldered wire onto one and tested it on a breadboard, but I get the same thing. So, I've tested 2 of them with the same result.
Input is the single top lead, then on the bottom it's ground on the left and regulated output on the right. It's just not that complex, but it's not working. I put in 13v and I get 13v out. I don't have any bypass capacitors on the breadboard, but on my circuit board I had a 4.7uf input and 0.1uf output capacitor.
The full part number is MCP1700T-5002E/TT. I checked the package labeling itself and it is labeled as the 5v regulator.
I'm hoping I'm just doing something stupid, because I'm stumped here. If nobody can figure this out, I can take pictures of exactly how I have it connected. I've gone over the connections against the datasheet about a dozen times now, though.