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Battery protection for PCF85263A

Question asked by Frans Jan van Donselaar on Dec 18, 2017
Latest reply on Sep 24, 2018 by ehwsma

Does a battery (CR2032 button cell) need extra protection like a diode and current limiting resistor when this battery is connected to the PCF85263A? The explanation of the battery switch circuit inside the PCF85263A is very minimal.


Additional question: What is the leakage current on VBAT when VDD is active?


The typical application (datasheet):

Needed according to UL:


Proposed application:



Frans Jan