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UCC29002: UCC29002 Start-up logic part number variants

Part Number: UCC29002
Other Parts Discussed in Thread: UCC39002


Could someone please confirm which exact, orderable part numbers from the UCC2900x and UCC3900x series of parts include, and do not include the start-up logic functionality described on pg. 9 of the datasheet? 

Do you offer any versions of this part in a VSSOP package which does NOT have the startup logic function?

I'm confused because of two reasons. First, the datasheet contradicts itself and says that UCC29002 both includes the start-up logic, and then in the same paragraph also states that the UCC29002 does NOT include the start-up logic! And second, on slide 25 of "Load share control using the UCC29002" powerpoint presentation, the distinction is that UCC29002/1 does NOT include startup logic, the UCC29002 DOES include startup logic, and there's no mention of UCC39002.

Thank you!!


  • Hi, Dom

    There is typo in the datasheet, the fact is:

    1. There are three part in UCCX900X family: UCC29002/UCC39002/UCC29002-1

    2. The UCC29002 and UCC39002 forces the power module into its maximum load sharing capability at startup. Load sharing is disabled at startup. UCC29002 is for TA from -40C to 105C, UCC39002 is for TA from 0C to 70C.

    3. The UCC29002-1 does not have this feature so load sharing is enabled even at startup with this device.

    Consider the SSOP package, you should select UCC29002DGKR.