Datasheet

L6226Q Circuit description
Doc ID 14335 Rev 5 13/29
values and its magnitude is reported in Figure 12. The delay time t
DELAY
before turning off
the bridge when an overcurrent has been detected depends only by C
EN
value. Its
magnitude is reported in Figure 13.
C
EN
is also used for providing immunity to pin EN against fast transient noises. Therefore
the value of C
EN
should be chosen as big as possible according to the maximum tolerable
Delay Time and the R
EN
value should be chosen according to the desired Disable Time.
The resistor R
EN
should be chosen in the range from 2.2 kΩ to 180 kΩ. Recommended
values for R
EN
and C
EN
are respectively 100 kΩ and 5.6 nF that allow obtaining 200 μs
disable time.
Figure 9. Overcurrent protection simplified schematic