• LT3761 Buck internal PWM dimming/ analog dimming

    My current application is very similar to the sample diagram on page 28 of the datasheet labeled "Buck Mode 5A LED Driver for 40kHz PWM Dimming". So I have a nearly identical copy of the following:

    One difference is that my LED current is 3A…

  • LT3761 Maximum PWM dimming frequency.


    Please inquire about the maximum PWM dimming frequency of the LT3761.

    Currently, we are using 40Khz to improve flicker noise in application, so please check how much it can be increased.

  • LT3761 Sync Option

    Looking to use TWO LT3761 drivers to replace the LT3797 we were currently using. I never used the "Sync" option and wasn't planning on it, but in the event that I do - How do I use the Sync pin to sync two of these together? The datasheet doesn't seem…

  • LT3761 analog diming


    I use the LT3761 with analog dimming where the control voltage on the CTRL pin is 1V or less.

    What is the variation of the 100mV offset voltage inside the CTRL pin? Also, how much does it vary with temperature?



  • LT3761 without PWM

    Dear Sir, please answer

    I'd like to use LT3761  without dimming. I need 16 LEDs with 3 V voltage drop at 1A current, then total voltage 16x3=48V.

    I have 10-30V power supply. I use LTSpice circuit with  LT3761 , please, see attachs.


    1) Can I…

  • LT3761 INTVcc and PWMOUT characteristics


    I have an application where I would like to use the PWMOUT pin on the LT3761 to drive an optocoupler between 6mA and 10mA but I could not find enough information in the datasheet that would let me determine the characteristics of the PWMOUT pin.

  • LT3761 having issues every time, no matter what.

    Hi. I am designing a boost LED driver using LT3761.

    Using the datasheet examples I designed and ordered PCBs, assembled them, but every time I connect the power one of four things explode: fuse, driver, boost MOSFET or sense shunt. I tried many different…

  • LT3761 LED switching regulator loop compensation +


    I have a design that uses the LT3761 LED switching controller to regulator the current in some high power LEDs (up to 50A).  I have isolated the LT3761 with MOSFET gate drivers and a differential amplifier at the ISN and ISP inputs.  I am testing the…

  • LT3761 Buck Mode Demo Board P/N:

    Dear All:

    I Need LT3761 Buck Mode demo board?? the DC1772A is boost mode LED Driver ,but I need Vin:42V To Vout:28V/6A ,so DC1772A not meed my reqiest .or tell me how to verify DC1772A demo board to meet my spec ,thanks


  • LT3761 internal pwm maximum frequency

    What is the LT3761's interarnal pwm maximimum frequency? In other words what is the minimum value for the Cpwm?  I used 1nF to achive around 10kHz, everthing looks fine but is there any long term considerations?

    Thank you in advance,

    Best Regards…