- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
Hi all
Would you mind if we ask LM3876 and LM3886?
Our customer would like to replace from LM3876 to LM3886.
So, there is some differences the pin 5 as follows;
-LM3876 : NC(+)
-LM3886 : V+
<Question1>
About LM3876, is it possible to conncect 5-pin NC(+) to V+?
(We can not judge whether 5-pin NC has internal connection or not on the datasheet.)
<Question2>
Is it possible to from LM3876 to LM3886 without the board layout changing?
Because there is no supply for 5-pin(V+) of LM3886, it occurred the partial contact of the amp.
Kind regards,
Hirotaka Matsumoto
Hello Matsumoto-san,
Thank you for your questions, I would be happy to answer them.
Q1: This was actually the intent of the original designers. the + in the parentheses is actually a footnote marker. I have included a screen shot of the datasheet for the LM3876 below:
Pin 5 is not internally connected on the LM3876, but if the layout designers wanted flexibility with components, they could connect pin 5 to V+ and use either the LM3876 or the LM3886.
Q2: If the original layout has pin 5 connected to V+ there is no need for any modifications. The LM3886 does require that pin5 be connected to V+
if the original layout did not connect pin 5 to V+ this would need to be changed, or pin 5 would need to be connected to V+ using a jumper
best regards,
-Steve Wilson
