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UCC2897A: solution select

Denny Huang
Expert 7170 points
Part Number: UCC2897A
Other Parts Discussed in Thread: TPS2373, UCC2891, UCC2893

Dear team 

Because of shortage of material.

Could you help to suggest suitable solution to replace the ucc2897a?

Many thanks

Denny

  • 0
    TI__Expert 7170 points

    Dear team 

    The customer use TPS2373 with ucc2897a.

    The output power is 12V/6A(72W).

    Many thanks

    Denny

  • 0 in reply to Denny Huang
    TI__Expert 7900 points

    Hi Denny,

    The UCC2897A has the following summary and 20-pin TSSOP pinout

    The UCC289x family has the following summary and 16-pin TSSOP pinout

    I would recommend either the UCC2891 (P-channel clamp) or UCC2893 (N-channel clamp) because they both offer the 110V start-up circuit, similar to the UCC2897A.  They can even interchange the UCC2891/UCC2893 by simply inverting the OUT signal on the PCB.  The UCC2891/3 offer a couple less functions than the UCC2897A (like LINEOV and separate PVDD pin).

    UCC2891 in SOIC shows 960 in stock at TI, and I see UCC2893 at some secondary suppliers.

    Regards,

    Eric