I need to build a charger for a small sealed lead-acid battery (12V,
2.3Ah, C/20) and was tempted to use the LT3652 until I realised it isn't
available in a pin'ed DIL package. Is there anything with similar
function that a hobbyist can deal with?

On Tue, 08 Jan 2013 14:23:18 +0000, unknown wrote:

I need to build a charger for a small sealed lead-acid battery (12V,
2.3Ah, C/20) and was tempted to use the LT3652 until I realised it
isn't available in a pin'ed DIL package.

You can get small boards for surface mounting ordinary SM stuff on that
bring the connections out to wire holes or onto pins. I don't know if
such things are available for that type of package(*1). The soldering
isn't difficult, clean and flux with a paste flux(*2), fix the chip in
place with tape or a blob of glue, have a little bit of solder on your
hot iron and quickly run it along the exposed conections. There are
YouTube videos showing this technique.

(*1) Looks like they probably are, is there something suitable here
(there seems to be an awful lot of variants):

http://www.proto-advantage.com/store...Path=2200_2202

(*2) I used a non-acid plumbers flux as that is what I had. Washed the
board well afterwards to remove an residue.

--
Cheers
Dave.

On Tuesday, January 8, 2013 3:08:48 PM UTC, Dave Liquorice wrote:
On Tue, 08 Jan 2013 14:23:18 +0000, unknown wrote:

I need to build a charger for a small sealed lead-acid battery (12V,
2.3Ah, C/20) and was tempted to use the LT3652 until I realised it
isn't available in a pin'ed DIL package.

You can get small boards for surface mounting ordinary SM stuff on that
bring the connections out to wire holes or onto pins. I don't know if
such things are available for that type of package(*1). The soldering
isn't difficult, clean and flux with a paste flux(*2), fix the chip in
place with tape or a blob of glue, have a little bit of solder on your
hot iron and quickly run it along the exposed conections. There are
YouTube videos showing this technique.
(*1) Looks like they probably are, is there something suitable here
(there seems to be an awful lot of variants):
http://www.proto-advantage.com/store...Path=2200_2202
(*2) I used a non-acid plumbers flux as that is what I had. Washed the
board well afterwards to remove an residue.

If you cant wait for another order, its possible to just solder strands of wire to each pin on an SMD, and when soldering to a board leave the leads long enough that the joints don't remelt.


NT

On 08/01/2013 19:57, wrote:
On Tuesday, January 8, 2013 3:08:48 PM UTC, Dave Liquorice wrote:
On Tue, 08 Jan 2013 14:23:18 +0000, unknown wrote:

I need to build a charger for a small sealed lead-acid battery (12V,
2.3Ah, C/20) and was tempted to use the LT3652 until I realised it
isn't available in a pin'ed DIL package.

You can get small boards for surface mounting ordinary SM stuff on that
bring the connections out to wire holes or onto pins. I don't know if
such things are available for that type of package(*1). The soldering
isn't difficult, clean and flux with a paste flux(*2), fix the chip in
place with tape or a blob of glue, have a little bit of solder on your
hot iron and quickly run it along the exposed conections. There are
YouTube videos showing this technique.
(*1) Looks like they probably are, is there something suitable here
(there seems to be an awful lot of variants):
http://www.proto-advantage.com/store...Path=2200_2202
(*2) I used a non-acid plumbers flux as that is what I had. Washed the
board well afterwards to remove an residue.

If you cant wait for another order, its possible to just solder strands of wire to each pin on an SMD, and when soldering to a board leave the leads long enough that the joints don't remelt.


NT


Thanks all, but from a quick look at the datasheet I think the UC3906
will do what I want and is available in DIL16.