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RTC PCF85363ATL and PCF85263ATL Internal protection

Question asked by Satish Ghariya on Jan 16, 2018
Latest reply on Nov 12, 2018 by Martin Studach

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In RTC PCF85363ATL/AX and PCF85263ATL, Internal battery switchover circuit is present. Also both the parts are UL listed part.

My question here is--> Do we need to add series resistor or diode or both for the battery protection. Is there any internal current limiting protection on battery pin and also is any protection diode internally.

Regards,
Satish

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Tomas Vaverka Jan 17, 2018 1:25 AM
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Hi Satish,

There is only a diode protection, a series resistor needs to be added externally.

Best regards,
Tomas
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- Satish Ghariya @ Tomas Vaverka on Jan 17, 2018 1:47 AM
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  Thanks Thomas,
  
  Regards,
  Satish
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- Martin Studach @ Tomas Vaverka on Nov 12, 2018 1:53 PM
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  Hi
  Is there an official documentation / application note on this topic? In case I have to discuss it with a test laboratory or notified body?
  Regards
  Martin
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RTC PCF85363ATL and PCF85263ATL Internal protection

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