Author Topic: LT3461A Through-hole equivalent?  (Read 700 times)

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Offline Siva-Na-GigTopic starter

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LT3461A Through-hole equivalent?
« on: September 06, 2019, 09:50:02 pm »
I'm working on a school project converting an SMT design to Through-Hole to make it a bit easier to work on with what we have available.  Finding an exact Through-hole equivalent for an LT3461A is eluding me, can anyone give me any suggestions or advice?  I'm not against redesigning the circuit somewhat to make something else work, though it would be pretty advanced for me to attempt that.
 

Offline orbanp

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Re: LT3461A Through-hole equivalent?
« Reply #1 on: September 08, 2019, 11:24:26 am »
Chances are you need to redesign the circuit.
Go to a distributor web-site (Digikey, Mouser, e.t.c.), enter the search engine for a through hole boost type controller IC, and you will have a number of choices.
Download the data sheet and go from there.

Good luck, Peter
« Last Edit: September 08, 2019, 11:28:15 am by orbanp »
 

Offline Ian.M

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Re: LT3461A Through-hole equivalent?
« Reply #2 on: September 08, 2019, 02:17:05 pm »
Generally, you wont be able to find one.  High switching frequency PSU chips strongly tend to be SMD only due to the need to shrink the loop area as much as possible to minimise radiated EMI and to avoid instability.  That also means slapping a  LT3461A on a generic TSOT23-6 to DIL breakout board isn't an option.


You can probably find something old fairly easily that switches in the 50KHz to 200KHz range in DIP or TO220-5 packages, but it will need *MUCH* larger and more expensive inductor and capacitors.

IMHO your best course of action would be to keep the section around the  LT3461A surface mount.   There's nothing there that's too tricky to hand solder, but if for example, it must be assembled by students, consider making it a small daughterboard following the recommended datasheet layout that can be preassembled by staff. 
« Last Edit: September 08, 2019, 02:33:01 pm by Ian.M »
 


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