ISL94202 Load Monitoring Power-On Reset

Question

Hi, I've built a system around the ISL94202 that has an integrated battery pack (the cells/BMS circuit are not removeable once assembled). The first time the device is assembled it works okay because the batteries are connected to the BMS prior to any load being attached. However I'd ideally like to be able to put the device into a "Powerdown State" for long term storage. The problem that I have is that the load is not removeable so after reconnecting the charger the device is unable to transition from "Power-On Reset" to "Normal Operating Mode". 
 Is there any way to configure the ISL94202 to ignore the presence of a load for this state transition? 
 Alternatively I could place a FET in the discharge path that is controlled by the charger, to disconnect the load while a charger is present. Then the charger would just need to be connected long enough for the ISL94202 to reach "Normal Operating Mode", but this would require additional components. 
 Thanks, Errol

AB_RENESAS · Answer

Hi, 
 Please go through this document for sleep and power down issues ISL94202 Sleep Mode Requirements (renesas.com) 
 Because the device is designed to be autonomous it has a safety feature built in which prevents the device from automatically enabling the FETs if it wakes from power down mode and detects a load. Some serious faults can send the device to power down, for this reason the FETs are off if the load is detected on exit from power down. 
 If the LDMON input can be held above the threshold detailed in the document it will not detect the load and the FETs will be enabled. The FET you suggests could be used for this instead of disconnecting the load, whichever you chooses depends on what works best with the type of load. 
 If a load is detected on exit from power down the device does wake up into normal mode, but it keeps the FETs off. Is there an MCU that communicates with the ISL94202? If so you can put the device into MCU control, enable the FETs then disable MCU control then the device will continue to work autonomously. 
 Thanks 
 AB

AB_RENESAS · Answer

Hi, 
 Kindly share your schematic to understand your application in details 
 Thanks 
 AB