A dual 1-amp opamp deserves a power pad, and this doesn't have one. But the lead frame comes out to four pins, and we can slurp a lot of heat out there.
The two pitchforks on the sides are strange.
I'm using one section as an LDO, +5 to +3.3 volts, 1 amp peak as an OCXO warms up. That looks like it will work. At 1 amp, it needs about a volt of headroom.
It's happier with a -5 supply on Vee, which is unfortunate because I can't heat sink to the layer 2 ground plane.
Fun.
Some DIP audio chips extend the pitchfork bits all the way to the mounting surface.
Cheers
Phil Hobbs
One of my kids was testing the TCA as an LDO, and had never heard of a "lead frame", so I told him to x-ray it.
Nice to have such a toy in-house :-)
My latest toy is the Seek Compact XR thermal camera
Bought a lens to have better closeup shots
It's actually a parts counter, so resolution is mediocre. I wish I had a smaller hi-res unit.
We have an ancient Flir E45, which cost about $12K originally. It has a giant germanium lens that will resolve the hot spot on an 0603 resistor. It's a fabulous tool. It helps answer the eternal question "where is the current going?"
This is an NEC dual transistor, which is obviously two chips that are not well connected thermally:
Have something to add? Share your thoughts — no account required.
Ask the community — no account required