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OPT8320 external illumination driver

Other Parts Discussed in Thread: OPT8241

Can you provide a bit more information on the role of ILLUM_PWM_CTRL and ILLUM_PWR_SYNC pins? I assume the ILLUM_FB pin works the same as on OPT8241/9221.


In general, I would really appreciate a reference schematic, even if you don't have kits for sale yet - the parts are available so you must know at least how to test them :-)

  • Jeff,

    We don't currently have a reference schematic for the DCDC converter. We can help you with the design. The PWM_CTRL and the PWM_SYNC pins control the switch inputs for the DCDC converter. It's supposed to be a replacement for external DCDC converters in case you can't find any.

    The general idea is to use it as follows:

    The components in red would have been a part of the external DCDC converter.

    Regards,
    Subhash