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  • UC1842: Component design LTpice model availability.

    TI Thinks Resolved
    Part Number: UC1842 Other Parts Discussed in Thread: UCC1801 Tool/software: I'm trying to locate the component information for UC 1841 ( Programmable, Offline, PWM controller) . When I look up the PN online it sends me to a TI datasheet but no further…
    • Answered

  • UC1842: poor programming: if listed above, no need to repeat - but without no Support.... so again: "UC1842"

    Resolved
    Part Number: UC1842 The Figure 10 in Datasheet of UC1842 is wrong (see wrong axis scale). Could you please assist with a correct one? (i.e. 50, 5, printed in between 30 and 40 (3 and 4), resistors started at 3k in diagramm, strictly recommended not under…
    • Resolved
    • Answered

  • UC1842: UC1842J ROHS compliance?

    Resolved
    Part Number: UC1842 Hi, Is UC1842J ROHS compliance? Wish to hear from you. Thanks and best regards, KH
    • Resolved
    • Answered

  • UC1842: Reference Design

    Resolved
    Part Number: UC1842 Other Parts Discussed in Thread: , UC1843 , POWERSTAGE-DESIGNER Hi, I want to design DC\DC convertor with UC1842A Can you pleas provide any reference design? In the datasheet I don't see the value of the components. + How to set…
    • Resolved

  • Why the operating temp are differences for UC1842/2842/3842

    TI Thinks Resolved
    Part Number: UC2842 Other Parts Discussed in Thread: UC1842 Why UC1842/2842/3842 have different operating temperature with same pacakge/thermal resistor/Tj=150? Is it the process difference and what else? Are their die-size different? Regards, Brian

  • LM5020 sync input

    Other Parts Discussed in Thread: UC1842 , LM5020 Previously, I was using UC1842 IC. There is any no problem from it. I want to use LM5020 integrated, but where should I connect the sync input and shutdown points? I want to use my ORCAD Pspice Project.
    • Answered

  • UC1842/3/4/5 and UC2842/3/4/5 - minimum on time

    Resolved
    Other Parts Discussed in Thread: UC2842 , UC1842 Hi all Would you mind if we ask UC1842/3/4/5 and UC2842/3/4/5? We recognize that the formula of minimum on time is as the follow; -tONmin=D / Fsw About Fsw, there is only typ value. Our customer would like…
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    • Answered

  • UC1842/3/4/5 and UC2842/3/4/5 - actual minimum on time

    Resolved
    Other Parts Discussed in Thread: UC2842 , UC1842 , TPS40210 Hi all Would you mind if we ask UC1842/3/4/5 and UC2842/3/4/5? How much is tON(min) Minimum pulse duration? Of course, we recognize that the minimum duty is 0%(Dmin). As our recgnition, it is possible to…
    • Resolved

  • UC2825A-EP: Thermal shutdown and estimated life vs. ambient temperature curve

    TI Thinks Resolved
    Part Number: UC2825A-EP Other Parts Discussed in Thread: UC1842 , Hello, Can you confirm that the UC2825A-EP and the UC1842(3,4,5)A-EP do not have thermal shutdown? Also, do we have estimated life vs ambient temperature curves for these 2 devices? Best…
    • Answered

  • RE: UCC28C44: Looking for alternative PWM controller

    Resolved
    Hello Jack, I was unable to find a similar part where the parameters are tested for operation at 125C. A similar par is the UC1842 . This is characterised at 125C but it is not available in VSSOP. http://www.ti.com/lit/ds/symlink/uc1842.pdf . This is available…

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