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Results on Analog.com

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  • Resource_types.lvl0:Evaluation Documentation
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Results on EngineerZone

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    1. LT3922 Buck Mode Schematic

      Forum Thread
      Answered
      Power Management
      13 January, 2021
      Hi, The schematic for a buck mode LED driver written in LT3922 datasheet page 27 seems not correct. I tried this schematic on LTspice but I could not get correct data. LT3922 seems not to work since VIN=VSW and ILED=0A. If it is not correct, please send your …
      Step-Up (Boost) LED DriversLED Driver ICLT3922

    2. LT3922

      Forum Thread
      Answered
      Power Management
      03 November, 2020
      hello： My project application in surgical lights, an LED current is 1.67 A, I need five project LED series, I set the output voltage of 16.5 V, but the input can be between 14 and 16 V analog dimming, when the input voltage increases or decreases, and the …
      Step-Up (Boost) LED DriverspowerLED Driver ICLT3922

    3. Question about an external PMW dimming for LT3922

      Forum Thread
      Answered
      Power Management
      01 September, 2020
      Hi, I have some questions about duty signalof external PWM signal to turn LEDs off? Please take a look at the attachment. When my external PWM duty cycle is set to 1020/1024 (D=99.6%), my LEDs are not turned off completely. When my external PWM duty cycle is …
      Step-Up (Boost) LED DriversLED Driver ICLT3922

    4. LT3922 vs LT3922-1

      Forum Thread
      Answered
      Power Management
      05 November, 2019
      Months ago I designed a circuit for use with the LT3922. However I see it is now out of stock with most large suppliers. After glancing through the LT3922-1 it seems to be almost a direct replacement (bar some things like increased dimming resolution). Is this the case or …
      Step-Up (Boost) LED DriversLT3922-1LED Driver ICLT3922

    5. LT3922 Buck Mode LED Driver

      Forum Thread
      Answered
      Power Management
      29 May, 2018
      Hello LT Support, I want to use the LT3922 in Buck Mode as an LED Driver for a 12V/1,5A LED (one power LED). The supply voltage is 15V. Additionally I want to use the SSFM option with up to 2MHz switching frequency (base fsw=1,6Mhz*125%). The …
      Step-Up (Boost) LED Driversdc dc led buck driverstep-down led driver controllerLED Driver ICLT3922

    6. LT3922-1 Boost Mode LED Driver with internal PWM Dimming

      Forum Thread
      Answered
      Power Management
      19 August, 2020
      Hi,I want to drive my 6V 20mA UV LED with PWM. I chose LT3922-1 circuit for this Application. I used Zener Diode instead of LEDI want to set the Output PWM Dimming Frequency with the resistance to be connected to the RP pin. However, changing the RP Pin …
      Step-Up (Boost) LED DriversLT3922-1LED Driver IC

    7. RE: LT3922-1 Boost Mode LED Driver with internal PWM Dimming

      Forum Reply
      Power Management
      13 March, 2022
      Please do SYNC RELEASE in LTspice. The model has been updated. Thanks! Best Regards, Hong

    8. RE: LT3922 Buck Mode Schematic

      Forum Reply
      Power Management
      10 February, 2021
      Hello, Sorry for the late reply. Your schematic works well. Thank you. Regards, Kazu

    9. RE: LT3922 Buck Mode Schematic

      Forum Reply
      Power Management
      08 February, 2021
      LT3518_Buck-Conveter_CC.asc Hello Kazu, Please see the schematic, and tell us your feedback. Vin: 3.3V to 5V Note that the LED used has a Vf of ~3V. The schematic will regulate the LED current at 1.5A regardless of the forward voltage of the LED, given …

    10. RE: LT3922 Buck Mode Schematic

      Forum Reply
      Power Management
      02 February, 2021
      Hello Dave, Thank you for your prompt reply. I look forward to your buck converter design. Regards, Kazu