Search tips
Showing 25 results View by: Thread Post Sort by

  • UC1842: UC1842 and UC1842A

    TI Thinks Resolved
    Part Number: UC1842 Tool/software: I have got few questions about UC1842 and UC1842A. 1) Can we design the power supply without opto- isolator using these ICs? 2) Shall I use my test requirement voltages in calculations or operating voltages in calculations…

  • UC2842: IS UC1842/2842/3842 can be use as open loop configuration

    TI Thinks Resolved
    Part Number: UC2842 Other Parts Discussed in Thread: UC1842 Tool/software: In my project, we require a SMPS with an input voltage range of 120V to 200V DC and an output voltage range of 30V to 50V DC. The application demands an open-loop configuration…

  • 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…
    • 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…
    • 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, …
    • Answered

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

    Resolved
    Matsumoto-san, Are you intending to use this as an AC/DC buck or similar that uses small duty cycle? What are your input range, output voltage, output current requirements? With this information perhaps we could point you toward an existing reference…
    • 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…
    • Resolved

  • 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…

Didn't find what you are looking for? Post a new question.