High current op-amp, small through-hole package

[Marco Trapanese]

Hello,

I need an op-amp for a buffer application (in DC) with this features:

* single supply: +5V
* high output current: > 100 mA
* package: through-hole, small as possible like TO220 or metallic case

What would you recommend?

Thanks!
Marco / iw2nzm

 

[Marco Trapanese]

Mook Johnson ha scritto:

Is the current always being sorced or sunk into the opamp. If so then an
emitter follower with a NPN (for sourcing) or PNP (sinking) would do the
trick.

If you can take some small zero cross distortion you cna place a totem ploe
(npn/pnp stacked) on the output and take the feedback from the emitters.
With a reasonably fast Opamp the crossover distortion will be small when
viewed on the scope. If you going for a high fidielty (audio) you may need
something more elaborate.

Nope. I only have to buffer a Vref of a DAC (2V). So using an NPN after
a buffer should do the trick if I have the space to place both op-amp
and bjt.

Thanks!
Marco / iw2nzm

 

[MooseFET]

Hello,

I need an op-amp for a buffer application (in DC) with this features:

* single supply: +5V
* high output current: > 100 mA
* package: through-hole, small as possible like TO220 or metallic case

What would you recommend?

How about abusing a regulator like the LT3080. If the load is always
sinking it works as a voltage follower with a low offset voltage.

 

[Marco Trapanese]

MooseFET ha scritto:

How about abusing a regulator like the LT3080. If the load is always
sinking it works as a voltage follower with a low offset voltage.

It could be an idea. Thanks for the input

Marco / iw2nzm