Other Parts Discussed in Thread: ABS, UCC1804
The datasheet for the UCC2813-x-Q1 family shows that the VCC ABS MAX rating is 12V. There is a footnote that states "
In normal operation VCC is powered through a current limiting resistor. Absolute maximum of 12 V applies when VCC is driven from a low
impedance source such that ICC does not exceed 30 mA (which includes gate drive current requirement).
". So does this mean that if a design has VCC higher than 12V they must include a series resistor that limits the current for the maximum expected voltage to less than 30mA. For example, if VCC(max) is 100V the resistor must be ~ 3.33k?
Also, is there some level that even with a series resistor would not be OK to exceed on VCC? Where we might need to provide additional protection to the VCC node?
This is especially relevant for the variants that have a UVLO Turn-On Threshold typical of 12.5V (can be as high as 13.5V) since at first glance it looks like the 2 specs conflict....but I'm sure this is a misinterpretation on my part.
Please clarify for me.