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LM5109: Alternative product with same functionality

Taito Takemura
Intellectual 2750 points
Part Number: LM5109
Other Parts Discussed in Thread: , LM2101, LM2005, LM2105

Hi teams,

My customer is looking for a replacement product for LM5109BSD/NOPB. Could you please give me recommended products?　I would appreciate it if there was a cheaper driver with the same functionality.

Regards,

Taito Takemura

  • 0
    TI__Genius 12365 points

    Hey Taito,

    Thank you for your question regarding the LM5109B.

    Is the customer having an issue with this product or are they just looking for a change and cost reduction for a new revision?

    Do they need a pin to pin (P2P) device?

    As for P2P devices in 4mm x 4mm SON packages, we have the following:

    LM5109BSD/NOPB - 8V UVLO, external bootstrap diode, 1A - $0.368/1ku

    UCC27284DRMR - 5V UVLO, integrated bootstrap diode, 3A - $0.481/1ku

    UCC27289DRMR - 8V UVLO, integrated bootstrap diode, 3A - $0.481/1ku

    UCC27211ADRMR - 8V UVLO, integrated bootstrap diode, 4A - $0.663/1ku

    As you can see, for P2P products, the LM5109 is very cost effective.

    A new series of products that has been recently released and is very cost effective is the LM2x0x devices. These come in SOIC-8 and SON-8 (2x2) packages with various configurations of pinouts and those with and without integrated bootstrap diodes.

    LM2101 - 8V UVLO, external bootstrap diode, 0.5/0.8A - $0.190/1ku

    LM2005 - 8V UVLO, integrated bootstrap diode, 0.5/0.8A - $0.220/1ku

    LM2105 - 5V UVLO, integrated bootstrap diode, 0.5/0.8A - $0.220/1ku

    There are other configurations with inverting logic and shutdown pins as well in this series of products.

    Let me know if you have any questions.

    Thank you,

    William Moore