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TLC5941-Q1: PWM frequency range

Thomas Bewley
Expert 1030 points
Part Number: TLC5941-Q1
Other Parts Discussed in Thread: TLC6C5724-Q1

I want to use the PWM outputs of the TLC5941-Q1 to drive several TI DRV-8881Ps for DC motor control.  Is this an anticipated application of this device?  Any anticipated problems?  What kind of PWM frequencies can I achieve with the TLC5941-Q1?  I'm having a hard time finding this range via a quick search of the TLC5941-Q1 datasheet.

On another note: I would dearly love a QFN packaging of this silicon, I'm working on a highly space-constrained board design - TI appears to have a dearth of options of high-channel-count PWM generators, and they don't seem to packaged them with space-constrained applications in mind...

  • 0
    TI__Expert 5380 points

    TLC5941-Q1 doesn't have any pull up circuit on output, so external pull up circuit is needed for such outputs to drive such application. But we will have TLC6C5724-Q1 which have similar features with TLC5941-Q1 but implement internal pull up circuit inside which can save external pull up circuit. This device will be avalible on ti.com at the end of this month. It is HTSSOP38 package with 24ch output 50mA max.

    For TLC5941-Q1 we don't have QFN package plan for now.