Hello support team,
This is FAE Dave, thanks for taking time looking into this issue.
Figure.1 is the limit listed in datasheet and it states that the limit is 450mA of the maximum.
Fig.1
My customer has experienced the current spike during the boot-up, as the figure.2 and figure.3 below.
Fig.2 and Fig.3
|
Output VR MLCC |
1uF*1 |
|
Output Device MLCC |
22uF*4+47uF*2+0.1uF*2 |
|
IIN(fig.2) |
1.05A |
|
Pd (instant) |
(3.3-1.8V)*1.05A=1.575W |
|
Output VR MLCC |
1uF*1 |
|
Output Device MLCC |
22uF*1+0.1uF*2 |
|
IIN(fig.3) |
932mA |
|
Pd (instant) |
(3.3-1.8V)*0.932A=1.398W |
My customer has provided me the schematic, if it is needed, I could sent it through email.
Thanks for the support!
Best regards,
Dave
