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Electronics => Beginners => Topic started by: stoyanoff on August 09, 2021, 03:12:30 pm

Title: ACS709 fault reset
Post by: stoyanoff on August 09, 2021, 03:12:30 pm

Greetings! I need to substitute my current sensor and ACS709 is available. Has anybody ever used this sensor? I need to know if the fault pin resets if the fault condition is not present?  Do I have to use the FAULT_EN pin? Because I don`t have extra pin for this.
Thanks!

Title: Re: ACS709 fault reset
Post by: Jwillis on August 10, 2021, 03:23:04 am

I think it works in conjunction with pin 22 .

19   FAULT    Over current Fault pin. When current flowing between IP+ pins and IP– pins exceeds the overcurrent fault threshold, this pin transitions to a logic low state.

22   FAULT_EN   Enables overcurrent faulting when high. Resets FAULT when low

Page 16 of ACS709 Datasheet (http://file:///C:/Users/MEMYSE~1/AppData/Local/Temp/ACS709-Datasheet.pdf)