L6470: connect Vreg and Vdd for 5V supply?

mahlers9 · ‎2011-08-18

Posted on August 18, 2011 at 21:35

#l6470 #l6470

mahlers9 · ‎2011-08-18

Posted on August 18, 2011 at 21:42

bille.stello · ‎2011-08-29

Posted on August 29, 2011 at 09:34

For 5V supply voltage:

VREG connected to 3.3V or internally supplied (in this case plase a capacitor on Vreg pin)

VDD connected to 5V

joe239955_stm1 · ‎2012-01-05

Posted on January 05, 2012 at 16:42

If using 5V only for Vdd

What value cap(s) are recommended for a open (using Internal 3.3V reg) Vreg pin

Thanks

Joe

Enrico Poli · ‎2012-01-10

Posted on January 10, 2012 at 10:43

Dear Joe,

The VREG pin needs at least a 22uF capacitor to be stable. The recommended value is 47uF.

If you want to use a electrolytic cap, I also suggest you to add a small ceramic cap (100nF) to filter the current spikes coming from the logic.

The VDD need a 10uF capacitor.

Kind Regards

Enrico