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Showing 13 results View by: Thread Post Sort by
  • UC1844: ADP1974 replacement

    Conor
    Conor
    TI Thinks Resolved
    Part Number: UC1844 Tool/software: Hi, I'm looking for a replacement for ADP1974, so if you have any recommendations, please let me know. https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1974.pdf Selection criteria ・Control circuit…
    • over 2 years ago
    • Power management
    • Power management forum
  • Answered
  • UC1844: UC1844J compared to UC1844J883B

    Kannan Sockalingam
    Kannan Sockalingam
    Resolved
    Part Number: UC1844 Hi there, what is the difference between the two orderable in the subject line? Mechanical and electrical. https://www.ti.com/product/UC1844?keyMatch=UC1844&tisearch=search-everything&usecase=GPN#order-quality
    • Resolved
    • over 4 years ago
    • Power management
    • Power management forum
  • UC1844: Issue with Isense resistor.

    santhosh edukula1
    santhosh edukula1
    TI Thinks Resolved
    Part Number: UC1844 Hi, We selected uc1844 PWM controller for our application, We are running simulation for the same to verify design parameters. Here we have issue with Isense resistor. Our current is 0.6A, As per requirement Isense resistor value…
    • over 5 years ago
    • Power management
    • Power management forum
  • Answered
  • UC1844: UC1844J

    Alexander Chernov
    Alexander Chernov
    Resolved
    Part Number: UC1844 Hello! I will be very glad if anybody can tell is that original IC marking, or not?
    • Resolved
    • over 7 years ago
    • Power management
    • Power management forum
  • UC2844: Temp range with spec change

    Allen Lu
    Allen Lu
    TI Thinks Resolved
    Part Number: UC2844 Other Parts Discussed in Thread: UC1844 Tool/software: hi Team, customer already have the AVL code of UC2844, but the spec is only for 85C customer want to know if this device working higher than 85c, which parameter will become…
    • over 1 year ago
    • Power management
    • Power management forum
  • UC1843: Cold start delay -40C

    kasra Motesadi
    kasra Motesadi
    TI Thinks Resolved
    Part Number: UC1843 Other Parts Discussed in Thread: UC1844 , I have a power supply with first stage UC1843 for boost and second stage UC1844 for Flyback and the output. problem is on cold temp test, power supply has a delay of several seconds to start…
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • UC1845A: Observed high frequency kind pulses in drain to source

    cs power
    cs power
    Resolved
    Part Number: UC1845A Other Parts Discussed in Thread: UC1842 , UC1845 , UC1843A Tool/software: Hi Sir, I am working on a UC1845A IC for offline flyback AC-DC where turns ratio is 5 and Np is 30 Ns is 6 turns. its just like the application circuit…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • PWM controller Power Dissipiation

    chaitanyab
    chaitanyab
    Other Parts Discussed in Thread: UC1844 , UCC27524 Hi, I am using UC1844 in my SMPS design. I am observing the chip is getting hot around 30 deg C rise above ambient, I have 22 ohm series resistor which is common for Turn on and off, if I increase it…
    • over 11 years ago
    • Power management
    • Power management forum
  • UC2901 Output Swing

    Veerasamy Vasudevan
    Veerasamy Vasudevan
    Other Parts Discussed in Thread: UC1844 , UC2901 Hi, I have one doubt about UC2901 output voltage Swing. In my circuit, UC2901 drives the error amplifier in UC1844 PWM controller. The voltage divider at error amplifier in PWM controller sets my output…
    • over 10 years ago
    • Power management
    • Power management forum
  • Answered
  • [FAQ] Looking for blank or dummy ceramic packages for mechanical samples. Are any available?

    Wade Vonbergen
    Wade Vonbergen
    Resolved
    Other Parts Discussed in Thread: MKT-WG16A-MS , MKT-WG10A-MS , SN0020HKH , SN0010HKU , TPS7H1111-SP , TPS7H4011-SP , TPS7H6003-SP , SN00020FK Looking for mechanical package samples for trim and form setup Answer: For our Space Power Ceramic QMLV qualified…
    • Resolved
    • over 5 years ago
    • Power management
    • Power management forum
>

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