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LMKDB1102: LMKDB1102: May I have some question regarding TI some document mention LMKDB1102 and datasheet?

TAlex Wu
Expert 1140 points
Part Number: LMKDB1102
Other Parts Discussed in Thread: CDCDB2000

Tool/software:

Dear SIR:

May I have some question regarding TI some  document mention LMKDB1102 and datasheet?

RC19XXX, 9QXL2001X vs. LMKDB1XXX, CDCDB2000 Drop-In Replacement Guide PAGE 25~26

https://www.ti.com/lit/ug/snaa410/snaa410.pdf?ts=1741316340363&ref_url=https%253A%252F%252Fwww.google.com%252F

Mention that LMKDB1102 can drop-in part

Q1.

But compare LMKDB1102 and Drop-In part both reference document and datasheet (RC1900X datasheet and some document) seems have "some different" 

according to LMKDB1102  document page 79,94 the via of Thermal Pad is 5 and place as page 94 

https://www.ti.com/lit/ds/symlink/lmkdb1102.pdf?ts=1742799742942&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252Fzh-tw%252FLMKDB1102

seems different with Drop-In part's document's 3x3 for via of Thermal Pad.

So, I want double confirming the different . It LMKDB1102 still can Drop-In?

Would you have any advise ?

thanks 

  • 0
    TI__Mastermind 23741 points

    Hello Talex, 
    You're correct in regard to there being some differences.

    Only workaround is not programming the differing registers, but it shouldn't have much effect. 
    OE pins also have a slew rate requirement on LMKDB devices. 

    There shouldn't be too much difference - we can still be a drop-in replacement. 

    We are fully compatible with RC190xx family. 

    Best regards, 

    Vicente 

  • 0 in reply to vicente flores prado
    Expert 1140 points

    Dear SIR:

    Thanks for your reply.

    seems you reply by circuit view. But my question mention via of Thermal Pad by layout view.(change another words,if 3x3 for via of Thermal Pad LMKDB1102 can drop-in and without any side effect.(because according to LMKDB1102 via of Thermal Pad number is 5 and place as datasheet  page 94 .

    thanks

  • +1 in reply to TAlex Wu
    TI__Mastermind 23741 points

    Hello Talex, 
    thermal vias are only that - for thermal relief. 
    Even if the thermal patters don't match - you are at liberty at adding/removing them. 
    The DS is just a starting point for your layout. 
    You can drop in without any issue. 

    Best regards

    Vicente