• LT8650S - Generating 0.85V


    I am looking forward using LT8650S to generate 0.85 et 0.9V.
    Is this part suitable for these 2 low voltage for an FPGA?


  • LT8650S LTSpice sequenced startup


    I am currently trying to simulate some sequenced startup following the datasheet under LTSpice.
    When doing so, none of the output start. There seems to be an issue with the LTSpice model.
    Could you help?


  • RE: LT8650S 2 phase LTPowerCAD model

    Hi Cyril,

    It’s available in LTPowerCAD. Make sure you fill "2" in parallel phase

  • RE: what is the junction-to-board thermal resistance of LT8650S?

    Hi Keddy,

    We only have junction to IC bottom thermal impedance as 4.56C/W.

  • LT8650S and FPGA

    Hello all.

    I've an old board with XC6SLX9 FPGA that needs 1.2V and 3.3V voltages; I must update the old board changing only the power and I'd like to use the LT8650S. 

    Is LT8650S suggested to power FPGA like XILINX SPARTAN6?

    Thank you.


  • Problem with LT8650S

    LT8650S.pdfI realized a board with LT8650S. The schematic is here attached.

    My idea is to have two different OUTPUTs VH and VL_I from the LT8650S. The max current for VH will be 1.5A and the max current for VL_I will be 0.5A

    In this circuit, I can change…

  • LT8650S SEV/SIV/SHV/SPJV differences

    Hey there,

    We're currently having troubles sourcing this chip, the only variant available to us at the moment is the LT8650SPJV#PBF

    The datasheet only mentions SEV and SIV with the later having a greater guaranteed operating temperature. But there…

  • LT8650S - Spice Model - Enabling


    It is indicated in the datasheet that both channel can be enabled/disabled separately. But on LTspice, I noticed that when the channel-1 is disabled, channel-2 is also disabled even though it's enable pin is driven high. Probably this is an issue…

  • LT8650 Minimum Inductor Calculation

    I am looking for guidance on calculating the minimum inductance required to prevent subharmonic oscillation on the LT8650.  I found the mention of APP NOTE 19 (which is an amazing reference) and the details there.  I was not able to locate the Sx Voltage…

  • LT8650S Vout1 NOT starting sometimes

    We are using the LT8650S in several recent designs.  Input is nominal 28V.  Vout1 is 5v, Vout2 is 3.3V.  3.3V output (Vout2) is always stable.  Vout1 (5v) will occasionally not start.  The output rises to 1.4V (resulting in about .24V at the reference pin…