IR3553 / IR3555 pin compatible?

Announcements

Live Webinar: Solving the challenges in xEV power conversions | March 7 @9am & 5pm CET. Register now!

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Not applicable
Hi I have an out of warranty Graphics card I wish to attempt a repair on. The Card has died twice during it's warranty and again just after warranty ended (not your fault!), I suspect underpowered IR3553 might have been responsible each time. (They develop a short when broken)

I am wondering if it is possible for me to replace all the IR3553 with IR3555, i.e. are they pin compatible.

I understand the IR3553 is 4mm x 6mm and the IR3555 is 6mm x 6mm, but the GPU seems to have extra pin space for fitting the larger chips, there are large solder pads underneath each chip which allow for different chip sizes. I have attached an image showing the 4mm x 6mm IR3553 on the circuit board.

3161.attach

Thanks for any advice on this.
0 Likes
1 Solution
Daisy_T
Moderator
Moderator
Moderator
250 sign-ins 250 replies posted 25 likes received
Hello Karrana,

IR3553 / IR3555 are not pin compatible.

View solution in original post

0 Likes
1 Reply
Daisy_T
Moderator
Moderator
Moderator
250 sign-ins 250 replies posted 25 likes received
Hello Karrana,

IR3553 / IR3555 are not pin compatible.
0 Likes