Hello TI team,
the high side switch is planned to be used in a 12 V battery automotive application, in which the standby current should be reduced as much as possible as the application will be connected permanently to the car battery.
To achieve the overall quiescent current target, the standby current including leakage must stay below 40 uA, when EN = low.
In the application only this pin will be used to interface with the high-side switch, all other pins will be connected according the recommendation in the datasheet.
Based on the datasheet, I have found the following specified values:
Standby current (total device leakage including MOSFET): 0.5 uA at 85 °C
Output leakage current: 3 uA at 85 °C
In total 3.5 uA at 85 °C, which would be perfectly fine.
As I want to reduce the current limit to approx. 10 A (5 A max. continuous required), I would need to use the R_LIM resistor.
Hence I would like to understand, how much additional standby current the usage of a R_LIM resistor (current limit resistor) causes and if there are any additional sources (e.g. in case SNS gets terminated via a 1 kOhm resistor)?
Thanks.
