• LT3922 vs LT3922-1

    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…

  • LT3922-1 Boost Mode LED Driver with internal PWM Dimming

    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 LED

    I want to set the Output PWM Dimming Frequency with the resistance to be connected to the RP pin. However, changing the RP Pin…

  • LT3922-1使用BUCK的模式来驱动LED,是否也可以用到25000:1,

    1、看了3922-1的手册,BUCK模式使用的外围器件比boost的模式的元器件更多,更大,这个是什么原因?BUCK模式也可以使用到25000:1吧,

    2、这个片子的电流比较大2.3A,有没有电流在1A左右,调整率也在25000:1的芯片啊

  • RE: LT3922 Buck Mode Schematic

    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…

  • LT3922

    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…

  • LT3922 Buck Mode LED Driver

    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 

  • Question about an external PMW dimming for LT3922

    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…

  • .file_attr 1="1";

    Building a project imported from CCES 1.1.0 to 2.3.0 I get this error:

    [Error ea5004] "C:\Users\G\AppData\Local\Temp\acc3554de5a000\acc3554de5a001.s":659 Syntax Error in :
    .file_attr 1="1";
    syntax error is at or near text '1'.…

  • AD9523-1  Can I precisely adjust output clock frequency with AD9523-1 (EVAL-AD9523-1)?

    Greetings!

    I would like to inquire if it is possible to achieve precise frequency control with EVALZ - AD9531-1? I'm interested in generating a clock signal that is a multiple of femtosecond laser output pulse rate, which can be something close to 80…

  • Arduino UNO and ADXL345 getting 0 0 0 OR -1 -1 -1 outputs with SPI communication

    I have EVAL-ADXL345Z evaluation board from Analog Device hooked up to the Arduino UNO R3, the code complies and runs fine. At first I could still get…