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ADP5090 - Super capacitor instead of battery as storage device. Can it goes under 2V ?

Question asked by samba-guy on Mar 3, 2015
Latest reply on Mar 8, 2015 by Kevin.Yao



On ADP5090, if using a SUPER capacitor in BAT-pin (I'm no Batman!) instead of a rechargeable battery, can the shutdown discharging voltage (SETSD pin) be lowered below 2V ?


Let's say, could resistor R(SD1) be equal 0, then SETSD voltage would decrease to about Vref (1.21V) ? What are the implications ?


By lowering or disabling the shutdown discharging voltage I would expect to increase the system availability time due capacitor remaining charge.